EP3803117A1 - Apparatus for conveying thick matter - Google Patents

Abstract

The invention relates to an apparatus (1) for conveying thick matter (DS), having: - at least one drive cylinder (10a, 10b) for receiving hydraulic fluid (HF), at least one drive piston (11a, 11b), which is arranged in the drive cylinder (10a, 10b), at least one conveying cylinder (12a, 12b) for receiving thick matter (DS), at least one conveying piston (13a, 13b), which is arranged in the conveying cylinder (12a, 12b), and at least one piston rod (14a, 14b), which is fastened to the drive piston (11a, 11b) for coupling motion together with the conveying piston (13a, 13b), - wherein the drive cylinder (10a, 10b) has a rod-side opening (SDa, SDb) for applying pressure to a rod side (SKa, SKb) of the drive piston (11a, 11b) by means of hydraulic fluid (HF) and a floor-side opening (BDa, BDb) for applying pressure to a floor side (BKa, BKb) of the drive piston (11a, 11b) facing away from the rod side (SKa, SKb) by means of hydraulic fluid (HF), - a drive pump (20), which is designed to generate a drive volume flow (AVF) having a drive pressure (pA) of hydraulic fluid (HF) for moving the drive piston (11a, 11b), - at least one pump connection (30a, 30b), which is designed for variable connection of the drive pump (20) to the rod-side opening (SDa, SDb) or the floor-side opening (BDa, BDb) for the flow of hydraulic fluid (HF), - a sensor device (40), which is designed for automatic detection of whether the pump connection (30a, 30b) is connected to the rod-side opening (SDa, SDb) or the floor-side opening (BDa, BDb), and - a control unit (50), which is designed to control the apparatus (1) in a rod-side operating mode, when the rod-side pump connection is detected, and in a floor-side operating mode, when the floor-side pump connection is detected.

Description

 Device for conveying thick matter

AREA OF APPLICATION AND PRIOR ART

The invention relates to a device for conveying thick matter.

TASK AND SOLUTION

The invention is based on the object of providing a device for the promotion of thick matter that allows optimal and / or safe promotion.

The invention achieves this object by providing a device for conveying thick matter with the features of claim 1. Advantageous developments and / or embodiments of the invention are described in the dependent claims.

The inventive device for conveying thick matter has at least one drive cylinder, at least one drive piston, at least one delivery cylinder, at least one delivery piston and at least one piston rod. The drive cylinder is designed to receive hydraulic fluid, in particular oil. The drive piston is arranged in the drive cylinder. The delivery cylinder is designed to receive thick material. The delivery piston is arranged in the delivery cylinder. The piston rod is attached to the drive piston for movement coupling with the movement or movement on the delivery piston. Furthermore, the drive cylinder has a rod-side passage or inlet to

Pressurization of a rod side of the drive piston with hydraulic fluid and a bottom passage or inlet for pressurizing a side facing away from the rod side or opposite bottom side of the drive piston with hydraulic fluid. In addition, the device has a, in particular controllable, drive pump or drive pump unit, at least one pump connection, one, in particular electrical, sensor device and one, in particular electrical, control unit. The drive pump is designed to generate a drive volume flow with a drive pressure of hydraulic fluid for moving the drive piston, in particular in the drive cylinder, and thus in particular for moving the piston rod and thus of the delivery piston, in particular in the delivery cylinder. The pump connection is for changeable, in particular operator-changeable or detachable, connection of the drive pump, in particular a high-pressure side of the drive pump, with, in particular either, the rod-side passage or the bottom-side passage for the flow of hydraulic fluid, in particular from the drive pump to the drive piston formed. The sensor device is designed for autonomous or autonomous or automatic detection or recognition as to whether the pump connection is connected to the rod-side passage or the bottom-side passage. The control unit is for, in particular autonomous or autonomous or automatic control of the device, in particular the drive pump, at detected rod side pump connection in a rod-side mode and detected at the bottom pump connection in one, in particular different from the rod side, bottom-side mode.

The device enables a change or changeover between rod-side and bottom-side drive, in particular repeatable or multiple, in particular by an operator. Thus, the device allows a change in a transmission ratio between a drive side, in particular the drive cylinder and / or the drive piston, and a delivery side, in particular the delivery cylinder and / or the delivery piston. Thus, the device allows, in particular with constant drive pressure or drive pressure value and constant drive volume flow or drive volume flow value, a change in achievable values for delivery pressure and delivery volume flow.

In detail, the rod side and the bottom side may have the same area or the same area value. However, the piston rod attached to the drive piston may occupy a partial area of the rod side and thus take away from the hydraulic fluid the partial area for application of the drive pressure. In contrast, the hydraulic fluid, the bottom side over the entire surface for acting on the drive pressure available. Thus, a force transmitted from the hydraulic fluid to the drive pressure to the bottom side or a force value may be higher than a force or a force value to the rod side, respectively. Thus, the device may have the, in particular different, gear ratios. In particular, the bottom-side pump connection or the bottom-side operating mode can be used or used for high-pressure delivery. The rod-side pump connection or the rod-side operating mode can be used or used for low-pressure conveying. Furthermore, the piston rod can occupy a partial volume in the drive cylinder on the rod side and thus take away the hydraulic fluid from the partial volume for filling. In contrast, the hydraulic fluid in the drive cylinder on the bottom side of a volume can be completely available for filling. Thus, at bottom filling or filling of the drive cylinder caused by the hydraulic fluid with the drive volume movement or a Wegwert the drive piston shorter or lower than a movement or a Wegwert the drive piston at rod-side filling or filling of the drive cylinder with the drive volume. Thus, the device may have the, in particular different, gear ratios. In particular, the rod-side pump connection or the rod-side operating mode can be used or used for high volume delivery. The bottom-side pump connection or the bottom-side operating mode can be used or used for low-volume delivery.

In particular, the gear ratios may differ from one another by a value of 1, 1 to 2.5, in particular from 1.2 to 2.2, in particular from 1.3 to 1.9, in particular from 1.4 to 1.6, in particular from 1, 5.

The rod side may refer to the side, in particular the front side, of the drive piston, to which the piston rod is attached to the drive piston. The bottom side may denote the opposite or opposite side, in particular front side, of the drive piston. Additionally or alternatively, the bottom side need not be down.

The piston rod may be attached to the delivery piston.

The pump connection may comprise or be a pump connection line, in particular a hydraulic hose line. Additionally or alternatively, the pump connection may be connected to the drive pump and be designed for variable connection to the rod-side passage or the bottom passage.

Rod-side pump connection may refer to the connection of the pump connection with the rod-side passage. Bottom pump connection may refer to the connection of the pump connection with the bottom passage. Furthermore, the device or its sensor device makes it possible to detect the rod-side pump connection and the bottom-side pump connection or the active pump connection side independently. In other words, the operator does not need to input the active pump connection side into the control unit after a change between rod-side and bottom-side drive.

In particular, the sensor device can be referred to as a detection device or detection device. In detail, the sensor device can have at least one sensor and / or an evaluation unit, such as a processor. The sensor and the evaluation unit can have a signal connection with one another.

In addition, the device or its control unit or its rod-side operating mode and its bottom-side operating mode enables the device, in particular the drive pump, to be optimally and / or safely controlled.

In particular, in the bottom-side operating mode or in the high-pressure conveying mode, delivery by a delivery line to an arm package or a mast, in particular the device, can be prevented or an operating time can be limited, in particular by negative effects on a service life of components, in particular of the device reduce or even avoid altogether. In contrast, in the rod-side operating mode or in the low-pressure conveying mode, a limit-free operation may be possible or enabled. Additionally or alternatively, the control unit for controlling the device with detected rod-side pump connection in the rod-side mode and with detected bottom pump connection in the, in particular different from the rod side, bottom side mode with at least one to the respective pump connection, in particular rod side or bottom side pump connection, adapted operating parameters , in particular a value of the operating parameter, be formed. In particular, the at least one / several operating parameters, in particular a value of the operating parameter, may be different in the rod-side operating mode and in the bottom-side operating mode. Additionally or alternatively, in the bottom-side operating mode, a delivery pressure and / or the drive pressure and / or an operating period may be limited and / or a delivery through a delivery line of an arm package may be prevented. Next additionally or alternatively, a limit-free operation can be released in the rod-side mode. The control unit may include a processor and / or a memory. Additionally or alternatively, the control unit with the sensor device and / or the drive pump, in particular in each case, have a signal connection.

In addition, the device may have a, in particular electrical output device. The output device can be designed for, in particular automatic, outputting the detected pump connection side and / or the operating mode, in particular to the operator. In particular, the output device can have or be an indicator. Additionally or alternatively, the output device with the sensor device and / or the control unit, in particular in each case, have a signal connection.

The device may be referred to as a thick matter pump. Thick material may refer to mortar, cement, screed, concrete, plaster and / or mud. Additionally or alternatively, to promote the delivery piston act on the thick material, in particular have direct or direct contact with the thick material. Further additionally or alternatively, the device may be designed as a mobile device.

In one development of the invention, the device has at least two drive cylinders and at least two drive pistons. Furthermore, the device has at least one swing connection. The swing connection is designed for variable, in particular operator-changeable or detachable, connection, in particular either, bottom-side passages or rod-side passages of the drive cylinder for a flow of hydraulic fluid, in particular between the drive cylinders, so that the drive piston are phase-locked, in particular opposite phase or opposite movement. This makes it possible to reduce or even avoid a gap in the delivery of thick material, in particular compared to a device with only a single drive cylinder and only a single drive piston. In particular, the device may have at least two delivery cylinders, at least two delivery pistons, at least two piston rods and / or at least two pump connections. Additionally or alternatively, the swing connection can have or be a swing connection line, in particular a hydraulic hose line. Further additionally or alternatively, the swing connection can be designed for variable connection to the bottom-side passages or the rod-side passages. Further additionally or alternatively, the swing connection may be connected to the passages not connected by the pump connection. In other words, the swing connection side may be opposite to the pump connection side. In particular, the drive pump, the at least one pump connection, the Drive cylinder and the swing connection form a, in particular open or closed, circle for hydraulic fluid. Open circuit may refer to a flow of hydraulic fluid from a tank through the drive pump, the pump connection, the drive cylinders, and the rocker connection to the tank. Closed circuit may refer to a flow of hydraulic fluid from the drive pump, in particular a high pressure side of the drive pump through the pump connection, the drive cylinder, the swing connection and another pump connection to the pump, in particular a low pressure side or suction side of the drive pump. Further additionally or alternatively, the sensor device for independent detection, whether the swing connection is connected to the bottom passages or the rod-side passages, and thus for autonomous detection, whether the pump connection is connected to the rod-side passage or the bottom passage.

In a further development of the device, the sensor device is for, in particular automatic, measurement of at least one of the pump connection side or, in particular, respective transmission ratio dependent characteristic, in particular a value or magnitude of the characteristic of the drive piston, the delivery piston, the piston rod, the hydraulic fluid and / or the thick matter formed in a detection operation of the drive pump. Furthermore, the sensor device is designed for, in particular automatic, detection of the pump connection side based on the measured parameter. This allows indirect or indirect detection of the pump connection side. In other words, the sensor device need not be designed to directly or directly detect the connection of the pump connection side with the rod-side passage or the bottom passage. In particular, the control unit may be designed for, in particular automatic, control of the drive pump in a detection mode. Additionally or alternatively, the detection mode or the detection mode may be different from the rod-side mode and / or the bottom-side mode. In particular, loads on components, in particular of the device, can be reduced in the detection mode.

In one embodiment of the invention, the sensor device is based on the drive volume flow and / or a drive pump pressure, in particular the drive pressure for, in particular automatic, determination, in particular calculation and / or measurement, at least one comparison variable, in particular a value or magnitude of the comparison variable formed. Furthermore, the sensor device for, in particular automatic, comparison of the comparison variable with the characteristic and / or one on the Characteristic based size formed. In addition, the sensor device is designed for, in particular automatic, detection of the pump connection side based on a comparison result. In particular, the comparison variable may be referred to as the default size or target size. Additionally or alternatively, the sensor device may be designed to determine a rod-side comparison variable and a bottom-side comparison variable, which may be different from each other in particular by the gear ratios. Additionally or alternatively, the drive pump pressure may be a high pressure, in particular a high pressure side of the drive pump, or a low pressure, in particular a low pressure side of the drive pump. Additionally or alternatively, the comparison variable may be the drive volume flow and / or the drive pump pressure.

In one embodiment of the invention, the sensor device has a, in particular electrical, position detection device. The position detection device is designed for, in particular automatic, detection of at least two, in particular different, positions, in particular end position positions, of the drive piston, in particular in the drive cylinder, of the delivery piston, in particular in the delivery cylinder, and / or the piston rod. Furthermore, the sensor device is designed for, in particular automatic, detection of the pump connection side based on the detection of the positions. In particular, the parameter may have or be the at least two positions. Additionally or alternatively, the position detection device may comprise at least two position switches, in particular limit switches, or a displacement measuring system.

In one embodiment of the invention, the sensor device has a, in particular electrical, time measuring device. The time measuring device is designed for, in particular automatic, measurement of a movement time duration, in particular of a value or amount of the movement time duration, of the drive piston, the delivery piston and / or the piston rod between the positions, in particular the end position positions. Furthermore, the sensor device is designed for, in particular automatic, detection of the pump connection side based on the measured movement time duration. In particular, the characteristic variable may have or be the movement time duration. The sensor device can compare the measured movement time duration with a comparison movement time duration, in particular based on the drive volume flow. Additionally or alternatively, the parameter may include or be a speed of the drive piston, the delivery piston and / or the piston rod. The speed may be determined, in particular calculated, from a distance between the positions and the movement time duration. The sensor device can the measured speed compared with a comparison speed, in particular based on the drive volume flow.

In one embodiment of the invention, the device on a supply and / or power supply. The supply and / or supply is to, in particular automatic, supply and / or supply of hydraulic fluid in the pump connection side opposite rocker joint side formed. The sensor device, in particular the at least one position detection device, is designed for, in particular automatic, measuring a phase change, in particular a value or magnitude of the phase change, the drive piston, the delivery piston and / or the piston rods during supply or discharge. Furthermore, the sensor device is designed for, in particular automatic, detection of the pump connection side based on the measured phase change. In particular, the parameter may have or be the phase change. The sensor device may compare the measured phase change with a comparison phase change, in particular based on the feed or feed, and detect the swing connection side and / or the pump connection side based on a comparison result. In detail, the drive pistons, the delivery pistons and / or the piston rods or their positions detected, in particular by means of the position device, can have a phase relationship to one another, in particular 180 degrees. The phase position can, in particular unintentionally, change, in particular by at least one leakage. The phase position can be changed by supply or feed or be, in particular in one direction or an opposite direction. Additionally or alternatively, the supply and / or supply can have a supply and / or purge valve.

In one embodiment of the invention, the sensor device has at least one, in particular electrical, pressure measuring device. The pressure measuring device is for, in particular automatic, measuring a pressure, in particular a value or an amount of pressure, the hydraulic fluid, in particular in the drive cylinder, and / or the thick material, in particular in the delivery cylinder formed. Furthermore, the sensor device is designed for, in particular automatic, detection of the pump connection side based on the measured pressure. In particular, the parameter may have or be the pressure. The sensor device can compare the measured pressure with a comparison pressure, in particular based on the drive pump pressure. In one embodiment of the invention, the sensor device has at least one further, in particular electrical, pressure measuring device. The further pressure-measuring device is designed for, in particular automatic, measuring of, in particular, the drive pump pressure, in particular of a value or an amount of the drive pump pressure, of the hydraulic fluid. Furthermore, the sensor device is designed for, in particular automatic, comparison of the measured drive pump pressure with the measured pressure. In addition, the sensor device is designed for, in particular automatic, detection of the pump connection side based on a comparison result. In particular, the comparison variable can have or be the drive pump pressure.

In one development of the invention, the pump connection and / or the swing connection, if present, in particular, in each case have / at least one identification element of the sensor device. The rod-side passage and / or the bottom passage have / have, in particular in each case, an, in particular electrical, identification detection device of the sensor device. The

Identification detection device is designed for, in particular automatic, detection of the identification element. Additionally or alternatively, the rod-side passage and / or the base-side passage, in particular respectively, have / has an identification element of the sensor device. The pump connection and / or the swing connection, if present, have / has, in particular in each case, at least one, in particular electrical, identification detection device of the sensor device. The identification detection device is designed for, in particular automatic, detection of the identification element. The sensor device is designed for, in particular automatic, detection of the pump connection side based on the detection and / or non-detection of the identification element. This allows a direct or direct detection of the pump connection side. In particular, the identification detection can be contactless, in particular RFID detection. Additionally or alternatively, the identification detection may be touched.

In one development of the invention, the sensor device has at least one, in particular electrical, optical detection device, in particular a camera. The optical detection device is designed for, in particular automatic, optical detection of the connection of the pump connection and / or the swing connection, if present, with the rod-side passage or the base-side passage. This allows a direct or direct detection of the pump connection side. BRIEF DESCRIPTION OF THE DRAWINGS

Further advantages and aspects of the invention will become apparent from the claims and from the following description of preferred embodiments of the invention, which are explained below with reference to the figures. Showing:

Fig. 1 is a schematic circuit diagram of a device according to the invention for

 Conveying thick matter with a sensor device comprising at least one pressure measuring device,

2 is a schematic representation of pressure conditions in the apparatus of FIG. 1 at the bottom pump connection and a stroke,

3 is a schematic representation of pressure ratios in the apparatus of Figure 1 with rod-side pump connection and an opposite stroke.

4 shows a schematic representation of pressure ratios in the device of FIG. 1 with bottom-side pump connection and an opposite stroke, FIG.

5 is a schematic representation of pressure conditions in the apparatus of FIG. 1 with rod-side pump connection and a stroke,

6 is a schematic representation of pressure conditions in the apparatus of FIG. 1 with bottom-side pump connection and no stroke,

7 is a schematic representation of pressure conditions in the apparatus of FIG. 1 with rod-side pump connection and no stroke,

Fig. 8 is a further schematic circuit diagram of the invention

Device for conveying thick material with the sensor device comprising at least one position detection device and at least one time measuring device with bottom-side pump connection and a stroke, 9 is a schematic representation of the device of FIG. 8 with rod-side pump connection and a hub,

Fig. 10 is a further schematic circuit diagram of the invention

 Device for conveying thick matter with the sensor device comprising at least one position detection device and an inlet and / or outlet at the bottom-side pump connection and a stroke,

1 1 is a schematic representation of the device of FIG. 10 with rod-side pump connection and a hub,

12 is a schematic representation of a pump connection comprising a touch-sensitive identification element of the sensor device and a bottom-side passage having a touch-sensitive identification device of the sensor device of the device according to the invention for conveying thick matter,

Fig. 13 is a schematic representation of a swing connection of the device according to the invention for the delivery of thick matter, and

14 shows a further schematic representation of the pump connection comprising a non-contact identification element of the sensor device and a bottom-side passage having a non-contact identification device of the sensor device of the device according to the invention for conveying thick matter.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The inventive device 1 for conveying thick material DS has at least one drive cylinder 10a, 10b, at least one drive piston 11a, 11b, at least one delivery cylinder 12a, 12b, at least one delivery piston 13a, 13b and at least one piston rod 14a, 14b. The drive cylinder 10a, 10b is designed to receive hydraulic fluid HF. The drive piston 1 1a, 1 1 b is disposed in the drive cylinder 10a, 10b. The delivery cylinder 12a, 12b is designed to receive thick material DS. The delivery piston 13a, 13b is arranged in the delivery cylinder 12a, 12b. The piston rod 14 a, 14 b is on the drive piston 1 1 a, 1 1 b for motion coupling with the Delivery piston 13a, 13b attached. Furthermore, the drive cylinder 10a, 10b has a rod-side passage SDa, SDb for pressurizing a rod side SKa, SKb of the drive piston 11a, 11b with hydraulic fluid HF and a bottom passage BDa, BDb for pressurizing a bottom side BKa facing away from the rod side SKa, SKb , BKb of the drive piston 11 a, 1 1 b with hydraulic fluid HF. In addition, the device has a drive pump 20, at least one pump connection 30a, 30b, a sensor device 40 and a control unit 50. The drive pump 20 is designed to generate a drive volume flow AVF with a drive pressure pA of hydraulic fluid HF for moving the drive piston 1 1a, 11b. The pump connection 30a, 30b is designed for the variable connection of the drive pump 20 to the rod-side passage SDa, SDb or the bottom passage BDa, BDb for the flow of hydraulic fluid HF. The sensor device 40 is designed to independently detect whether the pump connection 30a, 30b is connected to the rod-side passage SDa, SDb or the bottom-side passage BDa, BDb. The control unit 50 is designed to control the device 1, in particular the drive pump 20, when the rod-side pump connection is detected in a rod-side operating mode and when the bottom-side pump connection is detected in a bottom-side operating mode.

In detail, the device 1 has a gear ratio dependent on the pump connection side. The piston rod 14a, 14b occupies a partial surface and a partial volume on the rod side SKa, SKb, as can be seen in FIG.

In the exemplary embodiment shown, the device 1 has two drive cylinders 10a, 10b and two drive pistons 11a, 11b. In addition, the device 1 has two delivery cylinders 12a, 12b, two delivery pistons 13a, 13b, two piston rods 14a, 14b and two pump connections 30a, 30b.

In alternative embodiments, the apparatus may include only a single drive cylinder, a single drive piston, a single delivery cylinder, a single delivery piston, a single piston rod, and a single pump connection.

Furthermore, in the exemplary embodiment shown, the device 1 has a swing connection 60. The rocker connection 60 is designed for variable connection of the bottom-side passages BDa, BDb or the rod-side passages SDa, SDb of the drive cylinders 10a, 10b for a flow of hydraulic fluid HF, so that the drive pistons 11a, 11b are phase-coupled, in particular counter-phase-coupled. In detail, the drive pump 20, the pump connections 30a, 30b, the drive cylinders 10a, 10b, and the rocker joint 60 form a closed loop for hydraulic fluid HF. In alternative embodiments, the drive pump, the at least one pump connection, the drive cylinders, and the rocker connection may form an open circuit for hydraulic fluid.

In addition, in FIGS. 1 to 11, the sensor device 40 for measuring at least one dependent on the pump connection side characteristic P1a, P1 b, P2a, P2b, Ta, Tb, PV, p1, p2 of the drive piston 1 1a, 1 1 b, the hydraulic fluid HF and / or the thick matter DS formed in a detection operation of the drive pump 20. In alternative exemplary embodiments, the sensor device may additionally or alternatively be designed to measure at least one characteristic of the delivery piston and / or the piston rod that is dependent on the pump connection side in a detection operation of the drive pump. Further, in the illustrated embodiment, the sensor device 40 for detecting the pump connection side is formed based on the measured characteristic P1a, P1b, P2a, P2b, Ta, Tb, PV, p1, p2.

In detail, the sensor device 40 is designed based on the drive volume flow AVF and / or a drive pump pressure pA, in particular the drive pressure pA, for determining at least one comparison variable VG. Furthermore, the sensor device 40 is designed to compare the comparison variable VG with the parameter P1a, P1b, P2a, P2b, Ta, Tb, PV, p1, p2. In alternative exemplary embodiments, the sensor device may additionally or alternatively be designed to compare the comparison variable with a variable based on the characteristic variable. In addition, the sensor device 40 is configured to detect the pump connection side based on a comparison result.

In FIGS. 1 to 7, the sensor device 40 has at least one pressure measuring device 91, 92. The pressure measuring device 91, 92 is designed to measure a pressure p1, p2 of the hydraulic fluid HF and / or the thick material DS. Further, the sensor device 40 for detecting the pump connection side is formed based on the measured pressure p1, p2.

In detail, in FIG. 1, the sensor device 40 has two pressure measuring devices 91, 92. The pressure measuring device 91 is designed to measure the pressure p1 of the hydraulic fluid HF. The pressure measuring device 92 is designed to measure the pressure p2 of the thick material DS. In alternative embodiments, the sensor device may only a single Pressure measuring device, which can be designed to measure the pressure, in particular either the hydraulic fluid or the thick material.

Furthermore, in FIGS. 1 to 7, the pressure measuring device 91 is arranged on the rod side, in particular on the drive cylinder 10a. In detail, the pressure measuring device 91 is arranged on a rod-side end of the drive cylinder 10a or on the rod-side passage SDa. In alternative embodiments, the pressure-measuring device may be arranged on the bottom side, in particular on the drive cylinder, in particular on a bottom-side end of the drive cylinder or on the bottom-side passage.

In addition, in FIGS. 1 to 7, the device 1 has a further pressure measuring device 93. The further pressure measuring device 93 is designed to measure the drive pump pressure pA, in particular the drive pressure pA, of the hydraulic fluid HF. Further, the sensor device 40 is configured to compare the measured driving pump pressure pA with the measured pressure p1, p2 and to detect the pump connection side based on a comparison result.

In detail, the device 1 or its sensor device 40 has a valve 95. The further pressure measuring device 93 is connected to the drive pump 20 by means of the valve 95. In particular, the valve 95 is designed to connect the further pressure measuring device 93 with a high-pressure side HD of the drive pump 20 for measuring the drive pressure pA, in particular automatically. In alternative embodiments, the valve may be configured to connect the further pressure measuring device with a low pressure side of the drive pump for measuring a low pressure, in particular automatically.

In the exemplary embodiment shown, there are three different pressures or pressure levels: the high pressure or drive pressure pA, in particular the drive pump 20, a drive pump pressure or the low pressure pN, in particular the drive pump 20, and a swinging pressure pS, in particular the swing connection side. The low-pressure level or the low-pressure pN is fixedly set on the drive pump 20 and can thus be assumed to be almost constant. The high pressure level or the high pressure or drive pressure pA adjusts itself by the pressure of the thick matter DS or a delivery pressure and the active pump connection side. The swinging pressure pS is, in particular depending on the active pump connection side, either proportional to the high pressure or drive pressure pA or to the low pressure pN. In detail is the Rocking pressure pS higher than the low pressure pN, in particular equal to the low pressure pN multiplied by the gear ratio. Furthermore, the rocking pressure pS is lower than the high pressure or driving pressure pA.

In Fig. 1 and 2, the drive pump 20 and its high-pressure side HD by means of the pump connection 30a with the bottom passage BDa of the drive cylinder 10a for the flow of hydraulic fluid HF, in particular from the drive pump 20 to the drive piston 11 a, respectively. Thus, the drive piston 11 moves a in Fig. 1 and 2 to the right, as indicated by an arrow. Further, the rocker joint 60 is connected to the rod-side passages SDa, SDb of the drive cylinders 10a, 10b for the flow of hydraulic fluid HF, in particular, from the drive cylinder 10a to the drive cylinder 10b. Thus, the drive piston 1 1 b moves in Fig. 1 and 2 to the left, as indicated by an arrow.

In this case, the pressure measuring device 91 measures the swinging pressure pS. The further pressure measuring device 93 measures the high pressure or drive pressure pA.

Furthermore, the sensor device 40 compares the high pressure or drive pressure pA, in particular as a comparison variable VG, with the swinging pressure pS, in particular as a parameter.

In this case, the sensor device 40, the connection of the drive pump 20 and its high-pressure side HD either with the drive cylinder 10a or the drive cylinder 10b or a direction of flow of the hydraulic fluid HF, in particular from the drive pump 20 to either the drive piston 1 1a or the drive piston 11 b known ,

Thus, the sensor device 40 detects the bottom-side pump connection based on the comparison result.

In FIG. 3, the drive pump 20 or its high-pressure side HD is connected by means of the pump connection 30a to the rod-side passage SDa of the drive cylinder 10a for the flow of hydraulic fluid HF, in particular from the drive pump 20 to the drive piston 11a. Thus, the drive piston 11 moves a in Fig. 3 to the left, as indicated by an arrow. Further, the swing joint 60 is connected to the bottom-side passages BDa, BDb of the drive cylinders 10a, 10b for the flow of hydraulic fluid HF, in particular, from the drive cylinder 10a to the drive cylinder 10b, connected. Thus, the drive piston 11 b moves in Fig. 3 to the right, as indicated by an arrow.

In this case, the pressure measuring device 91 measures the high pressure or drive pressure pA. The further pressure measuring device 93 measures the high pressure or drive pressure pA.

Furthermore, the sensor device 40 compares the high pressure or drive pressure pA, in particular as a comparison variable VG, with the high pressure or drive pressure pA, in particular as a parameter.

Thus, the sensor device 40 detects the rod-side pump connection.

In FIG. 4, the drive pump 20 or its high-pressure side HD is connected by means of the pump connection 30b to the bottom-side passage BDb of the drive cylinder 10b for the flow of hydraulic fluid HF, in particular from the drive pump 20 to the drive piston 11b. Thus, the drive piston 1 1 b moves in Fig. 4 to the right, as indicated by an arrow. Thus, the drive piston 1 1a moves in Fig. 4 to the left, as indicated by an arrow.

In this case, the pressure measuring device 91 measures the swinging pressure pS. The others

Pressure measuring device 93 measures the high pressure or drive pressure pA. Thus, the sensor device 40 detects the bottom-side pump connection.

In FIG. 5, the drive pump 20 or its high-pressure side HD is connected by means of the pump connection 30a to the rod-side passage SDb of the drive cylinder 10b for the flow of hydraulic fluid HF, in particular from the drive pump 20 to the drive piston 11b. Thus, the drive piston 11 b moves in Fig. 5 to the left, as indicated by an arrow. Thus, the drive piston 11 a moves in Fig. 5 to the right, as indicated by an arrow.

In this case, the pressure measuring device 91 measures the low pressure pN. The others

Pressure measuring device 93 measures the high pressure or drive pressure pA. Thus, the sensor device 40 detects the rod-side pump connection.

In Fig. 6, the drive pump 20 is connected by means of the pump connections 30a, 30b to the bottom-side passages BDa, BDb of the drive cylinders 10a, 10b. Furthermore the drive pump 20 is off or there is no flow of hydraulic fluid HF. Thus, none of the drive piston 1 1a, 1 1 b moves.

In this case, the pressure measuring device 91 measures the swinging pressure pS. The others

Pressure measuring device 93 measures the low pressure pN. Thus, the sensor device 40 detects the bottom-side pump connection.

In Fig. 7, the drive pump 20 is connected by means of the pump connections 30a, 30b to the rod-side passages SDa, SDb of the drive cylinders 10a, 10b. Furthermore, the drive pump 20 is off or there is no flow of hydraulic fluid HF. Thus, none of the drive piston 11 a, 11 b moves.

In this case, the pressure measuring device 91 measures the low pressure pN. The others

Pressure measuring device 93 measures the low pressure pN. Thus, the sensor device 40 detects the rod-side pump connection.

2 to 7, in particular in FIGS. 2 to 5, the sensor device 40 is the connection of the drive pump 20 or its high pressure side HD either with the drive cylinder 10a or the drive cylinder 10b or a direction of flow of hydraulic fluid HF, in particular from the drive pump 20 either to the drive piston 1 1a or the drive piston 11 b, known. In alternative embodiments, this need not be known to the sensor device. In particular, the sensor device can be designed to compare opposite strokes or movements of the drive pistons, in detail the movements shown in FIGS. 2 and 4 with each other or the movements shown in FIGS. 3 and 5 with each other. Further additionally or alternatively, in alternative embodiments, the device need not have the further pressure measuring device. In particular, the sensor device may be known for the high pressure or drive pressure, the low pressure and / or the swing pressure.

In FIGS. 8 to 11, the sensor device 40 has a position detection device 70a, 70b. The position detection device 70a, 70b is designed to detect at least two positions P1a, P1b, P2a, P2b of the drive piston 11a, 11b. In alternative embodiments, the position detection device may additionally or alternatively be designed to detect at least two positions of the delivery piston and / or the piston rod. Furthermore, the sensor device 40 for detecting the Pump connection side formed based on the detection of the positions P1a, P1b, P2a, P2b.

In detail, the sensor device 40 has two position detection devices 70a, 70b. In alternative embodiments, the sensor device may have only a single position detection device.

Furthermore, in FIGS. 8 and 9, the sensor device 40 has a time measuring device 71 a, 71 b. The time measuring device 71a, 71b is designed to measure a movement period Ta, Tb of the drive piston 1 1a, 11b between the positions P1a, P1b, P2a, P2b. In alternative embodiments, the time measuring device may additionally or alternatively be designed to measure a movement time duration of the delivery piston and / or the piston rod between the positions. Further, the sensor device 40 for detecting the pump connection side is formed based on the measured movement time Ta, Tb.

In detail, the sensor device 40 has two time measuring devices 71 a, 71 b. In alternative embodiments, the sensor device may have only a single time measuring device.

The movement time period Ta, Tb is dependent on the pump connection side, in particular either the bottom side pump connection side shown in FIG. 8 or the rod side pump connection side shown in FIG. 9, or the particular gear ratio, respectively.

The sensor device 40 compares a comparison variable VG based on the drive volume flow AVF with the measured movement time Ta, Tb or a speed based thereon, in particular as a parameter.

Thus, based on the comparison result in FIG. 8, the sensor device 40 detects the bottom-side pump connection and in FIG. 9 the rod-side pump connection.

In FIGS. 10 and 11, the device 1 has an inlet and / or outlet 80. The supply and / or supply is designed to supply and / or supply of hydraulic fluid HF in the pump connection side opposite swing connection side. The sensor device 40 is designed to measure a phase change PV of the drive pistons 11 a, 11 b during supply or discharge. In alternative embodiments, the Sensor device for measuring a phase change of the delivery piston and / or the piston rods to be formed during supply or discharge. Further, the sensor device 40 for detecting the pump connection side is formed based on the measured phase change PV.

In detail, the sensor device 40 compares the measured phase change PV, in particular as a parameter, with a comparison, in particular bottom side or rod side, comparison phase change, in particular based on the feed or Abfüisung, and detects based on a comparison result, the swing connection side and / or the pump connection side.

In the case of the bottom-side pump connection shown in FIG. 10, a feed leads to a movement of the drive pistons 11a, 112b to the left. The movement is detected by means of the at least one position detection device 70a, 70b. In contrast, leads in shown in Fig. 11 rod-side pump connection, a supply to a movement of the drive piston 1 1 a, 1 1 b to the right. Furthermore, in the case of a bottom-side pump connection shown in FIG. 10, a feed leads to a movement of the drive pistons 11a, 11b to the right. On the other hand, in the case of the rod-side pump connection shown in FIG. 11, a feed leads to a movement of the drive pistons 11 a, 11 b to the left.

In FIGS. 12 and 14, the pump connection 30a has at least one identification element IE of the sensor device 40. In alternative embodiments, the swing connection may comprise at least one identification element of the sensor device. The bottom-side passage BDa, in particular of the drive cylinder 10a, has an identification detection device EE of the sensor device 40. In alternative embodiments, the rod-side passage may comprise an identification detection device of the sensor device. The identification detection device EE is designed to detect the identification element IE.

In alternative embodiments, the rod-side passage and / or the bottom passage may, in particular, each have an identification element of the sensor device and the pump connection and / or the rocker connection may / may in particular each have at least one identification detection device of the sensor device for detecting the identification element.

The sensor device 40 is designed to detect the pump connection side based on the detection and / or non-detection of the identification element IE. In detail, the identification detection is touch-connected in FIG. 12, in particular, the identification detection device EE has a contact switch, in particular a roller switch, and the identification element IE has a pin for actuating the contact switch.

In Fig. 14, the identification detection is contactless, in particular a RIFD detection.

In the exemplary embodiment shown, the swing connection 60 has no identification element and no identification detection device.

In the bottom-time pump connection shown in FIGS. 12 and 14, the identification detection means EE detects the identification element IE. Thus, the sensor means 40 detects the bottom-side pump connection based on the detection of the identification element IE.

In the case of a rod-side pump connection, the identification detection device EE does not detect the identification element IE. Thus, the sensor device 40 detects the rod-side pump connection based on the non-detection of the identification element IE.

As the illustrated and illustrated above embodiments make it clear, the invention provides an advantageous device for the delivery of thick material that allows optimal and / or safe promotion.

Claims

claims 1. Device (1) for conveying thick matter (DS), comprising:  at least one drive cylinder (10a, 10b) for receiving hydraulic fluid (HF), at least one drive piston (11a, 11b), which is arranged in the drive cylinder (10a, 10b), at least one delivery cylinder (12a, 12b) for receiving Dickstoff (DS), at least one delivery piston (13a, 13b) which is arranged in the delivery cylinder (12a, 12b), and at least one piston rod (14a, 14b) on the drive piston (11 a, 11 b) for movement coupling with is attached to the delivery piston (13a, 13b),  wherein the drive cylinder (10a, 10b) a rod side passage (SDa, SDb) for pressurizing a rod side (SKa, SKb) of the drive piston (1 1a, 1 1 b) with hydraulic fluid (HF) and a bottom passage (BDa, BDb) for Pressurization of one of the rod side (SKa, SKb) facing away from the bottom side (BKa, BKb) of the drive piston (1 1a, 1 1 b) with hydraulic fluid (HF), a drive pump (20) for generating a drive volume flow (AVF) with a drive pressure (pA) of hydraulic fluid (HF) for movement of the drive piston (11 a, 1 1 b) is formed,  at least one pump connection (30a, 30b), which is designed for the variable connection of the drive pump (20) with the rod-side passage (SDa, SDb) or the bottom passage (BDa, BDb) for the flow of hydraulic fluid (HF),  a sensor means (40) for independently detecting whether the pump connection (30a, 30b) is connected to the rod-side passage (SDa, SDb) or the bottom-side passage (BDa, BDb), and  a control unit (50) configured to control the apparatus (1) when the rod-side pump connection is detected in a rod-side mode and when the bottom-side pump connection is detected in a bottom-side mode. 2. Device (1) according to claim 1, comprising:  at least two drive cylinders (10a, 10b) and at least two drive pistons (11a, 11b), and at least one rocking connection (60) which is designed for the variable connection of bottom-side passages (BDa, BDb) or rod-side passages (SDa, SDb) of the drive cylinders (10a, 10b) for a flow of hydraulic fluid (HF), so that the drive pistons (1 1a, 11b) are phase locked. 3. Device (1) according to one of the preceding claims,  wherein the sensor means (40) for measuring at least one of the pump connection side dependent characteristic (P1a, P1 b, P2a, P2b, Ta, Tb, PV, p1, p2) of the drive piston (11 a, 11 b), the delivery piston, the piston rod the hydraulic fluid (HF) and / or the thick matter (DS) in a detection operation of the drive pump (20) and for detecting the pump connection side based on the measured characteristic (P1a, P1b, P2a, P2b, Ta, Tb, PV, p1, p2) is formed. 4. Device (1) according to claim 3,  wherein the sensor device (40) based on the drive volume flow (AVF) and / or a drive pump pressure (pA), in particular the drive pressure (pA) for determining at least one comparison variable (VG), for comparing the comparison variable (VG) with the characteristic (P1a , P1b, P2a, P2b, Ta, Tb, PV, p1, p2) and / or a quantity based on the characteristic and for detecting the pump connection side based on a comparison result. 5. Device (1) according to claim 3 or 4,  wherein the sensor device (40) has a position detection device (70a, 70b) which is designed to detect at least two positions (P1a, P1b, P2a, P2b) of the drive piston (1a, 11b), the delivery piston and / or the piston rod is formed, and for detecting the pump connection side based on the detection of the positions (P1a, P1b, P2a, P2b) is formed. 6. Device (1) according to claim 5,  wherein the sensor device (40) has a time measuring device (71 a, 71 b) for measuring a movement time period (Ta, Tb) of the drive piston (11a, 11b), the delivery piston and / or the piston rod between the positions (P1a, P1b, P2a, P2b), and configured to detect the pump connection side based on the measured movement time period (Ta, Tb). 7. Device (1) according to claim 5 or 6, comprising:  a supply and / or feed (80), which is designed to supply and / or feed hydraulic fluid (HF) into the rocker connection side opposite the pump connection side, wherein the sensor device (40) for measuring a phase change (PV) of the drive piston (11 a, 11 b), the delivery piston and / or the piston rods at or Supply and for detecting the pump connection side based on the measured phase change (PV) is formed. 8. Device (1) according to one of claims 3 to 7,  wherein the sensor means (40) comprises at least one pressure measuring means (91, 92) adapted to measure a pressure (p1, p2) of the hydraulic fluid (HF) and / or the thick matter (DS) and to detect the pump connection side based on the measured pressure (p1, p2) is formed. 9. Device (1) according to claim 8,  wherein the sensor device (40) has at least one further pressure measuring device (93) which is designed to measure a drive pump pressure (pA), in particular the drive pressure (pA), the hydraulic fluid (HF), and to compare the measured drive pump pressure (pA) with the measured pressure (p1, p2) and for detecting the pump connection side based on a comparison result is formed. 10. Device (1) according to one of the preceding claims,  wherein the pump connection (30a) and / or the swing connection comprises / has at least one identification element (IE) of the sensor device (40) and the rod-side passage and / or the bottom passage (BDa) an identification detection device (EE) of the sensor device (40) for detecting of the identification element (IE) comprise / and / or  wherein the rod-side passage and / or the bottom passage has / have an identification element of the sensor device and the pump connection and / or the rocker connection have / have at least one identification detection device of the sensor device for detecting the identification element,  wherein the sensor connection device (40) is designed to detect the pump connection side based on the detection and / or non-detection of the identification element (IE).