CN221937956U - A traction pin device for a tractor and a tractor - Google Patents

Abstract

The application discloses a traction pin device for a tractor, which comprises a connecting seat, a first driving mechanism and a traction assembly, wherein the connecting seat is used for being connected with the tractor, the first driving mechanism is arranged on the connecting seat, the traction assembly is driven by the first driving mechanism to lift along a set direction, and the traction assembly comprises a second driving mechanism, a traction pin shaft with a shaft hole and a telescopic mechanism movably arranged in the shaft hole; the telescopic mechanism is configured to extend out of the shaft hole in a set direction under the driving action of the second driving mechanism and push the towed device, and can generate shrinkage deformation and simultaneously transmit pressure to the tractor in a direction opposite to the set direction through the connecting seat when pushing. A tractor mounted to the above-described kingpin assembly is also disclosed. The application can control the shrinkage deformation quantity of the telescopic mechanism according to the weight of the towed device which is known in advance, so that the pressure is transmitted to the tractor and the towed device is prevented from being excessively pushed.

Description

A traction pin device for a tractor and a tractor

Technical Field

The present application relates to the technical field of traction equipment, and in particular to a traction pin device for a tractor and a tractor.

Background Art

With the rapid development of smart warehousing, more and more cargo transfers will be completed using traction equipment. The traction equipment generally includes a tractor and a towed device (generally a towed vehicle or frame with wheels) that are used together. The towed device can be used to carry goods. After the tractor successfully docks with the towed device through the traction pin, it can drive the towed device to move. The force of the tractor on the towed device is generally in the traction direction, so the friction between the tractor and the ground needs to be large enough to provide the required traction force. In the related art, the method of increasing the deadweight of the tractor is generally adopted to increase the friction between the tractor and the ground, but this will increase the manufacturing cost and operating cost of the tractor.

At present, the relevant technology also provides a solution that can provide sufficient traction without using the weight of the tractor. The solution is to set a driving mechanism to continuously lift the traction pin shaft so that the traction pin shaft can push the traction device, and then transmit the reaction force of the traction device to the tractor through the traction pin shaft, so that the weight of the traction device can be transferred to the tractor to increase the friction between the tractor and the ground. However, this solution may cause excessive lifting in the process of using the driving mechanism to continuously lift the traction pin shaft, thereby causing the risk of lifting the traction device and separating it from the tractor, and the setting may cause the traction device to roll over.

Utility Model Content

The present application aims to solve one of the technical problems in the related art to a certain extent. To this end, the present application provides a traction pin device for a tractor and a tractor.

In order to achieve the above-mentioned purpose, the present application adopts the following technical solution: a traction pin device for a tractor, the traction pin device comprising a connecting seat for connecting to the tractor, a first driving mechanism arranged on the connecting seat, and a traction component driven by the first driving mechanism to rise and fall along a set direction, the traction component comprising a second driving mechanism, a traction pin shaft formed with an axial hole, and a telescopic mechanism movably arranged in the axial hole; the telescopic mechanism is configured to be able to extend out of the axial hole along the set direction and push the tractor under the driving action of the second driving mechanism, and the telescopic mechanism is also configured to be able to generate a contraction deformation during the pushing and transmit pressure to the tractor through the connecting seat in a direction opposite to the set direction.

The application of the present invention has the following beneficial effects: by setting up the second driving mechanism and the telescopic mechanism, the traction pin shaft is used to realize the traction docking, and the second driving mechanism is used to drive the telescopic mechanism to move and push the towed device, so that the weight of the towed device can be transferred to the tractor to increase the friction force between the tractor and the ground. At the same time, the telescopic mechanism can shrink during the above-mentioned pushing process, and the operator can determine a reasonable compression amount of the telescopic mechanism based on the weight of the towed device known in advance, and stop pushing the towed device when the telescopic mechanism is compressed to the pre-determined shrinkage deformation amount. In this way, while realizing the transfer of the weight of the towed device to the tractor, it is also possible to avoid excessive pushing of the towed device.

Optionally, the telescopic mechanism includes an embedded pin shaft and a telescopic elastic member, the top end of the telescopic elastic member is connected to the bottom end of the embedded pin shaft, and the bottom end of the telescopic elastic member is connected to the second driving mechanism.

Optionally, the traction pin device also includes a mounting seat, the traction assembly is arranged on the mounting seat, and the first driving mechanism is connected to the mounting seat and is used to drive the mounting seat to rise and fall along a set direction.

Optionally, the mounting seat includes a main seat and a support arranged on the main seat, the support is located below the main seat, the traction pin shaft is arranged on the main seat, and the second driving mechanism is arranged on the support.

Optionally, the second driving mechanism includes a second motor and a threaded screw driven by the second motor to rise and fall along a set direction, the main seat is provided with a through hole aligned with the axial hole, the axial hole has a threaded section, the top end of the threaded screw passes through the through hole and extends into the axial hole to be fixed to the bottom end of the telescopic mechanism, and the threaded screw is threadedly connected to the threaded section.

Optionally, the lower end of the traction pin is fixed to the main seat, and the connecting seat is provided with a through hole adapted to the traction pin, and the upper end of the traction pin extends out of the through hole.

Optionally, the main seat is provided with a threaded hole, and the first driving mechanism includes a first motor and a transmission screw threadedly connected to the threaded hole, and the first motor drives the mounting seat to rise and fall along a set direction by driving the transmission screw to rotate.

Optionally, the traction pin device also includes a mounting plate, the transmission screw passes through the main seat, and the top end of the transmission screw is rotatably disposed on the connecting seat via a bearing, and the bottom end of the transmission screw is rotatably disposed on the mounting plate via a bearing.

Optionally, two transmission screws are provided, and the first motor drives the two transmission screws to move synchronously through a belt transmission mechanism.

In addition, the present application also provides a tractor, comprising a vehicle body, the tractor further comprising a traction pin device as described in any one of the above technical solutions, the traction pin device being fixedly mounted on the vehicle body through the connecting seat. The reasoning process of the beneficial effects of the tractor provided by the present application and the above traction pin device is similar, and will not be repeated here.

These features and advantages of the present application will be disclosed in detail in the following specific embodiments and drawings. The best embodiments or means of the present application will be described in detail in conjunction with the drawings, but they are not intended to limit the technical solutions of the present application. In addition, there are multiple features, elements, and components that appear in each of the following texts and drawings, and different symbols or numbers are marked for convenience, but they all represent components with the same or similar structures or functions.

BRIEF DESCRIPTION OF THE DRAWINGS

The present application is further described below in conjunction with the accompanying drawings:

FIG1 is a schematic structural diagram of a traction pin device for a tractor provided in an embodiment of the present application;

FIG2 is a partial cross-sectional view of the traction pin device in FIG1 ;

FIG3 is an enlarged schematic diagram of part A in FIG2 ;

FIG4 is a second partial cross-sectional view of the traction pin device in FIG1 ;

FIG5 is an enlarged schematic diagram of part B in FIG4 ;

FIG6 is a schematic structural diagram of a tractor equipped with the traction pin device provided in this embodiment;

FIG7 is a schematic diagram of an application of the tractor in FIG6 for towing a towed device;

FIG8 is a partial cross-sectional view of the tractor in FIG6 used for towing a towed device;

FIG. 9 is an enlarged schematic diagram of portion C in FIG. 8 .

Among them, 1. connecting seat, 10. bearing, 11. mounting plate, 2. first driving mechanism, 20. first motor, 21. transmission screw, 22. first transmission belt, 23. driving wheel, 24. synchronous wheel, 3. second driving mechanism, 30. second motor, 31. threaded screw, 32. second transmission belt, 4. traction pin, 5. embedded pin, 6. telescopic elastic member, 7. mounting seat, 70. main seat, 71. support, 72. guide rod, 8. vehicle body, 80. traction wheel, 9. towed device, 90. cargo.

DETAILED DESCRIPTION

The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments based on the embodiments are intended to be used to explain the present application and cannot be understood as limiting the present application.

References to "one embodiment" or "an example" or "an example" in this specification mean that a particular feature, structure, or characteristic described in conjunction with the embodiment itself may be included in at least one embodiment disclosed in the present application. The appearance of the phrase "in one embodiment" in various places in the specification does not necessarily refer to the same embodiment.

The present embodiment provides a traction pin device for a tractor, as shown in FIG. 1, FIG. 2 and FIG. 3, the traction pin device includes a connecting seat 1, a first driving mechanism 2 and a traction assembly. The connecting seat 1 is used to connect with the tractor, the first driving mechanism 2 is arranged on the connecting seat 1, and the first driving mechanism 2 is used to drive the traction assembly to rise and fall along a set direction. The traction assembly in the present embodiment includes a second driving mechanism 3, a traction pin shaft 4 and a telescopic mechanism, wherein the traction pin shaft 4 is formed with a hollow shaft hole along its axial direction, and the telescopic mechanism is movably arranged in the above-mentioned shaft hole. The telescopic mechanism in the present embodiment is configured to be able to extend out of the shaft hole and push the traction device along the set direction under the driving action of the second driving mechanism 3, and the telescopic mechanism is also configured to generate a contraction deformation when pushing and transmit pressure to the tractor in the opposite direction to the set direction through the connecting seat 1. The set direction described in the present embodiment is in the same direction as the axial direction of the traction pin shaft 4 and upward. In general use scenarios, the set direction is the vertically upward direction.

The traction pin device can be applied to a tractor. By providing a second drive mechanism 3 and a telescopic mechanism, the traction pin shaft 4 is used to achieve traction docking. The second drive mechanism 3 can also be used to drive the telescopic mechanism to move and push the tractor, so that the weight of the tractor can be transferred to the tractor to increase the friction between the tractor and the ground. At the same time, the telescopic mechanism can shrink during the above-mentioned pushing process. The operator can determine a reasonable amount of compression for the telescopic mechanism based on the weight of the tractor known in advance, and stop pushing the tractor when the telescopic mechanism is compressed to the pre-determined shrinkage deformation. In this way, while the weight of the tractor is transferred to the tractor, excessive pushing of the tractor can be avoided. In addition, since the telescopic mechanism can shrink and deform within a certain degree, the traction pin device can be applied to traction operations on tractors of different weights, and the appropriate shrinkage deformation can be adjusted according to the weight of the tractor.

The telescopic mechanism in this embodiment includes an embedded pin 5 and a telescopic elastic member 6, the top of the telescopic elastic member 6 is connected to the bottom of the embedded pin 5, and the bottom of the telescopic elastic member 6 is connected to the second driving mechanism 3. With this design, the rigid embedded pin 5 can be used to push the traction device, and the telescopic elastic member 6 can be used to achieve the telescopic mechanism. Specifically in this embodiment, a spring is selected as the elastic telescopic member, and in an optional embodiment, a structure such as a metal shrapnel can also be used as the elastic telescopic member, which can produce an elastomer that meets the compression requirement along the set direction. In addition, the spring used as the telescopic elastic member 6 in this embodiment can be fixedly connected to the embedded pin 5 by welding or clamping. That is, the two can be directly welded together, or a ring groove can be set at the bottom end of the embedded pin 5, and the top of the spring can be clamped into the above-mentioned ring groove.

The second driving mechanism 3 in this embodiment includes a second motor 30 and a threaded screw 31 driven by the second motor 30 to rise and fall along a set direction, and the top end of the threaded screw 31 extends into the shaft hole and is fixedly connected to the bottom end of the telescopic elastic member 6. It is easy to understand that the top end of the threaded screw can also be fixedly connected to the spring as the telescopic elastic member by welding or clamping.

In addition, the traction pin device provided in this embodiment further includes a mounting seat 7, the traction assembly is arranged on the mounting seat 7, and the first driving mechanism 2 is connected to the mounting seat 7 and is used to drive the mounting seat 7 to rise and fall along a set direction. That is, the traction assembly is arranged on the mounting seat 7 as a whole, so that as long as the mounting seat 7 is driven to rise and fall by the first driving mechanism 2, the traction assembly on the mounting seat 7 can be driven to rise and fall.

Furthermore, the mounting seat 7 in this embodiment includes a main seat 70 and a support 71, the support 71 is arranged on the main seat 70 and is located below the main seat 70, the traction pin shaft 4 is arranged on the main seat 70, and the second driving mechanism 3 is arranged on the support 71. Such an arrangement allows the threaded screw 31 in the second driving mechanism 3 to extend into the shaft hole along a set direction (as shown in FIG. 1 , that is, from bottom to top), which facilitates the assembly of the threaded screw 31. In addition, a through hole aligned with the shaft hole is provided on the main seat 70, the top end of the threaded screw 31 passes through the through hole and extends into the shaft hole and is fixed to the bottom end of the telescopic mechanism, and at the same time, the shaft hole of the traction pin shaft 4 has a threaded section, and the threaded screw 31 is threadedly connected with the above-mentioned threaded section. It is easy to understand that the above-mentioned threaded section is located at one end of the shaft hole close to the main seat 70. The threaded transmission connection between the threaded screw 31 and the threaded section in the shaft hole can realize the axial stability of the threaded screw 31 relative to the main seat 70. The axial stability means that the threaded screw 31 will not fall relative to the main seat 70 without the action of external force. Correspondingly, the second motor 30 and the support 71 can maintain axial stability relative to the main seat 70 under the action of the threaded screw 31. When the second motor 30 drives the threaded screw 31 to rotate, the threaded screw 31 will realize the lifting movement relative to the main seat 70 under the action of the threaded transmission. In this process, the threaded screw 31 will also drive the support 71 and the second motor 30 to perform the lifting movement synchronously. Further, in this embodiment, a guide rod 72 is also provided between the main seat 70 and the support 71. One end of the guide rod 72 in this embodiment is fixedly connected to the support 71, and the other end of the guide rod 72 is inserted into a guide hole provided on the main seat 70, and the guide rod 72 is slidably provided in the above-mentioned guide hole. The provision of the guide rod 72 can prevent the support 71 and the second motor 30 from rotating relative to the main seat 70. In an optional implementation, one end of the guide rod may be fixed to the main seat, and the other end of the guide rod may be slidably disposed on the support.

Specifically in this embodiment, the support 71 is in the shape of a long plate, and the second motor 30 is fixedly arranged at one end of the support 71. The output end of the second motor 30 is connected to the second transmission belt 32. The second transmission belt 32 can drive the threaded screw 31 to rotate, and the threaded transmission connection between the threaded screw 31 and the threaded section in the shaft hole can drive the second drive mechanism as a whole and the support 71 to rise and fall.

In other optional implementations, an electric push rod or the like may be used as the second driving mechanism to drive the telescopic mechanism to rise and fall along a set direction.

In addition, the lower end of the traction pin 4 in this embodiment is fixed to the main seat 70, and the connecting seat 1 is provided with a through hole adapted to the traction pin 4, and the upper end of the traction pin 4 extends out of the through hole. The provided through hole can limit the traction pin 4 in the circumferential direction to prevent the traction pin 4 from shaking when the traction pin 4 is lifted and lowered along the set direction.

As shown in FIG1 , in this embodiment, a threaded hole is also provided on the main seat 70, and the first driving mechanism 2 includes a first motor 20 and a transmission screw 21 threadedly connected in the threaded hole, and the first motor 20 drives the mounting seat 7 to rise and fall along a set direction by driving the transmission screw 21 to rotate. That is, in this embodiment, the transmission screw 21 is designed to be able to rotate around its axis and cannot be lifted and moved along its axial direction, so that the rotational movement of the transmission screw 21 can be converted into the lifting and moving of the mounting seat 7 along the set direction through the threaded transmission connection. Specifically, in combination with FIG4 and FIG5 , the traction pin device also includes a mounting plate 11, the transmission screw 21 penetrates the main seat 70, and the top end of the transmission screw 21 is rotatably arranged on the connecting seat 1 through a bearing 10, and the bottom end of the transmission screw 21 is rotatably arranged on the mounting plate 11 through a bearing 10.

In order to improve the stability of the mounting base 7 in the lifting and lowering along the set direction, two transmission screws 21 are provided in this embodiment, and the first motor 20 drives the two transmission screws 21 to move synchronously through the belt transmission mechanism. Specifically, as shown in FIG1 , a driving wheel 23 is provided at the output end of the first motor 20, a synchronous wheel 24 is also provided on the connecting base 1, a transmission wheel is provided at the top of the transmission screw 21, and the first transmission belt 22 is tensioned and arranged between the driving wheel 23, the synchronous wheel 24 and the two transmission wheels. Through the above arrangement, the two transmission screws 21 can be driven to rotate synchronously by the first motor 20, thereby driving the mounting base 7 to lift and lower along the set direction.

The traction pin device provided in this embodiment can be applied to a tractor. As shown in FIG. 6 , a tractor includes a vehicle body 8 and the traction pin device provided in this embodiment. The traction pin device is fixedly mounted on the vehicle body 8 via a connecting seat 1 .

In combination with FIG. 7 , FIG. 8 and FIG. 9 , the use process of the tractor is described as follows: a traction wheel 80 is arranged below the vehicle body 8 of the tractor, and the tractor can travel along the path through the traction wheel 80, and the tractor 9 includes a frame, and a wheel is also arranged below the frame, and a cargo 90 is arranged on the frame. The tractor can move to the bottom of the tractor 9, and then the first driving mechanism 2 drives the mounting seat 7 to move along the set direction, and the traction assembly arranged on the mounting seat 7 moves with the mounting seat 7 until the traction pin 4 is inserted into the docking hole matched with the traction pin 4 arranged on the tractor 9. After that, the telescopic mechanism is driven to move along the set direction by the second driving mechanism 3, and the telescopic mechanism will contact the bottom of the tractor after moving a certain distance, and then the telescopic mechanism will continue to move to push the tractor, and the telescopic mechanism will shrink and deform. Before towing the towed device, the operator can calculate in advance the maximum value of the contraction deformation of the telescopic mechanism by knowing the weight of the towed device 9 (including the cargo 90 stored thereon) (theoretically, before the telescopic mechanism reaches the above-calculated maximum value, the towed device will not be over-pushed). Of course, in actual operation, considering that the tractor itself must have a certain dead weight, the telescopic mechanism can be stopped from being driven when the contraction deformation of the telescopic mechanism approaches the calculated maximum value.

In this way, while the weight of the towed device is transferred to the tractor, excessive pushing of the towed device can be avoided. Accordingly, the weight of the tractor itself does not need to be designed to be very large, and its overall size does not need to be too large, which can reduce the purchase and maintenance costs of the tractor.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Those skilled in the art should understand that the present application includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present application will be included in the scope of the claims.

Claims (10)

1. The traction pin device for the tractor is characterized by comprising a connecting seat (1) for being connected with the tractor, a first driving mechanism (2) arranged on the connecting seat (1) and a traction assembly driven by the first driving mechanism (2) to lift along a set direction, wherein the traction assembly comprises a second driving mechanism (3), a traction pin shaft (4) with a shaft hole and a telescopic mechanism movably arranged in the shaft hole;

the telescopic mechanism is configured to extend out of the shaft hole and push the towed device along a set direction under the driving action of the second driving mechanism (3), and is further configured to generate shrinkage deformation and simultaneously transmit pressure to the tractor along the direction opposite to the set direction through the connecting seat (1) when pushing is performed.

2. The towing pin device according to claim 1, characterized in that the telescopic mechanism comprises an embedded pin shaft (5) and a telescopic elastic member (6), the top end of the telescopic elastic member (6) is connected with the bottom end of the embedded pin shaft (5), and the bottom end of the telescopic elastic member (6) is connected with the second driving mechanism (3).

3. The kingpin assembly according to claim 1 or 2, further comprising a mounting base (7), wherein the towing assembly is arranged on the mounting base (7), and wherein the first driving mechanism (2) is connected to the mounting base (7) and is adapted to drive the mounting base (7) to be lifted in a set direction.

4. A kingpin arrangement according to claim 3, characterized in that the mounting block (7) comprises a main block (70) and a support (71) arranged on the main block (70), the support (71) being located below the main block (70), the kingpin (4) being arranged on the main block (70), the second drive mechanism (3) being arranged on the support (71).

5. The towing pin device according to claim 4, characterized in that the second driving mechanism (3) comprises a second motor (30) and a threaded screw rod (31) driven by the second motor (30) to rise and fall in a set direction, the main seat (70) is provided with a through hole aligned with the shaft hole, the shaft hole is provided with a threaded section, the top end of the threaded screw rod (31) passes through the through hole and extends into the shaft hole to be fixed with the bottom end of the telescopic mechanism, and the threaded screw rod (31) is in threaded transmission connection with the threaded section.

6. The towing pin device according to claim 4, characterized in that the lower end of the towing pin (4) is fixed to the main seat (70), the connection seat (1) is provided with a perforation adapted to the towing pin (4), and the upper end of the towing pin (4) protrudes out of the perforation.

7. The traction pin device according to claim 4, wherein the main seat (70) is provided with a threaded hole, the first driving mechanism (2) comprises a first motor (20) and a transmission screw (21) which is in threaded transmission connection with the threaded hole, and the first motor (20) drives the mounting seat (7) to lift along the set direction by driving the transmission screw (21) to rotate.

8. The kingpin assembly according to claim 7, further comprising a mounting plate (11), wherein the drive screw (21) extends through the main seat (70), and wherein a top end of the drive screw (21) is rotatably arranged to the connection seat (1) via a bearing (10), and wherein a bottom end of the drive screw (21) is rotatably arranged to the mounting plate (11) via a bearing (10).

9. The traction pin device according to claim 7, wherein two drive screws (21) are provided, and the first motor (20) drives the two drive screws (21) to synchronously act through a belt transmission mechanism.

10. Tractor comprising a car body (8), characterized in that it further comprises a kingpin device according to any one of claims 1 to 9, which is fixedly mounted to the car body (8) by means of the connection socket (1).