CN110864600A - A tension-measurable meter-counting device - Google Patents

Abstract

The invention relates to a metering device with measurable tensile force, which comprises a device frame provided with an upper wheel set and a lower wheel set, wherein one driving wheel in the upper wheel set is a tension wheel, a swing arm with an axis extending along the front-back direction is hinged on the device frame, the tension wheel is rotatably assembled on the swing arm, a tensile force adjusting part is arranged between one end of the swing arm, which is far away from the hinged axis, and the device frame, a screw rod through hole is arranged on the device frame, the tensile force adjusting part comprises a tensile force adjusting screw rod penetrating through the screw rod through hole, a tensile force adjusting nut is in threaded connection with at least one side of the tensile force adjusting screw rod through hole, and a force measuring sensor is arranged. Rotating the tension adjusting nut, the swing arm drives the tension wheel to move, so that the synchronous conveyor belt with the meter length can be tensioned, and meanwhile, the force applied to the swing arm can be directly measured by the force measuring sensor which is serially arranged on the tension adjusting part, so that the tension of the synchronous conveyor belt with the meter length can be obtained.

Description

A tension-measurable meter-counting device

technical field

The present invention relates to a tension-measurable meter-counting device in the field of length measurement.

Background technique

In the production and sales process of printing, compounding, winding and other fields, there is a need for accurate measurement of length. At present, the usual measurement method is to use metering device measurement, and the measurement accuracy of the metering device will directly affect the cable, etc. Product measurement accuracy.

Existing meter counting device such as Chinese patent CN207881602U disclosed meter counting device, this meter counting device includes a device frame provided with an upper wheel group and a lower wheel group, and at least one transmission wheel in the upper wheel group and the lower wheel group is meter counting. The upper and lower wheels are respectively wound with an upper conveyor belt and a lower conveyor belt that are clamped on both sides of the corresponding cable under test when in use. The conveyor belt wound on the meter wheel is a meter synchronous conveyor belt.

When in use, the tested cable passes between the upper conveyor belt and the lower conveyor belt, and the tested cable is frictionally rolled with the upper conveyor belt and the lower conveyor belt, so as to rotate with the corresponding meter wheel, through the circle of the meter wheel rotation. The number measures the length of the cable under test. It can be seen from this that whether there is slippage between the metering synchronous conveyor belt and the cable under test is the key factor to determine whether the metering is accurate, and the key to determining whether there is slippage between the metering synchronous conveyor belt and the cable under test is the synchronization of metering. The tension force of the conveyor belt cannot be measured in the prior art, so the tension force of the meter timing belt cannot be guaranteed.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a meter-counting device with a measurable tension force of a meter-counting synchronous conveyor belt.

For solving the above-mentioned technical problems, the technical scheme in the present invention is as follows:

A meter counting device with measurable tension force, comprising a device frame provided with an upper wheel group and a lower wheel group, at least one transmission wheel in the upper wheel group is a meter wheel whose axis extends in the front-rear direction, and the upper wheel group is in the upper wheel group. . The upper conveyor belt and the lower conveyor belt are respectively wound on the lower wheel set for clamping the upper and lower sides of the corresponding cable under test when in use. The upper conveyor belt is a meter-counting synchronous conveyor belt, and one of the driving wheels in the upper wheel set is a tensioning wheel. , a swing arm with an axis extending in the front-rear direction is hinged on the device frame, the tensioning wheel is rotatably assembled on the swing arm, and a tension adjusting component is arranged between the end of the swing arm away from its hinge axis and the device frame, The device frame is provided with a screw hole, the tensioning force adjustment component includes a tension adjustment screw that penetrates through the screw hole, and a tension adjustment nut is threadedly connected to at least one side of the screw hole on the tension adjustment screw. A load cell is arranged in series on the tightening force adjusting part.

One end of the load cell is hingedly connected to the swing arm, and the other end of the load cell is hingedly connected to the tension adjusting screw.

Both the upper wheel group and the lower wheel group include two said transmission wheels arranged at left and right intervals, wherein the two transmission wheels of the upper wheel group are respectively the left transmission wheel of the upper wheel group and the right transmission wheel of the upper wheel group, and the two transmission wheels of the lower wheel group are respectively. The driving wheels are respectively the left driving wheel of the lower wheel set and the right driving wheel of the lower wheel set, the device frame includes a mounting base plate for the hinged installation of the swing arm, and the left driving wheel of the upper wheel set and the left driving wheel of the lower wheel set are rotatably assembled on On the mounting base plate, the right transmission wheel of the upper wheel group is the tension wheel.

The right transmission wheel of the lower wheel set is hinged on the swing arm, and the hinge shaft of the swing arm is located on the lower side of the upper wheel set and the lower wheel set.

The mounting base plate and the swing arm are located on the front and rear sides of the upper wheel set and the lower wheel set.

The right transmission wheel of the lower wheel set is located on the corresponding lower side of the right transmission wheel of the upper wheel set, and the installation base plate is provided with an arc-shaped guiding long hole whose axis extends in the front-rear direction. In the long-shaped guide hole, the arc-shaped guide long hole is provided with a compression spring that exerts upward force on the right drive wheel of the lower wheel group, the movement path of the right drive wheel of the lower wheel group and the movement path of the right drive wheel of the upper wheel group parallel.

The beneficial effects of the invention are as follows: when in use, the tension adjusting nut is rotated, so that the tension adjusting screw applies a pushing force or a pulling force to the swing arm, and the swing arm drives the tension wheel to move, so as to realize the tension meter synchronous conveyor belt, and simultaneously string The force measuring sensor located on the tension adjusting part can directly measure the force on the swing arm, so as to obtain the tension force of the meter-meter synchronous conveyor belt.

Further, the right transmission wheel of the lower wheel group is rotated and installed on the swing arm together with the right transmission wheel of the upper wheel group. When the swing arm is adjusted to ensure the tension of the meter-counting synchronous conveyor belt, the lower conveyor belt on the lower wheel group is also re-tensioned. , Of course, it is more important to ensure that the distance between the left transmission wheel of the upper wheel group and the left transmission wheel of the lower wheel group is consistent with the distance between the right transmission wheel of the upper wheel group and the right transmission wheel of the lower wheel group, so as to ensure that the upper , The lower conveyor belt can be in reliable contact with the cable under test.

Further, the right drive wheel of the lower wheel group is guided and moved and assembled in the arc-shaped guide slot on the installation base plate. When adjusting the swing arm to ensure the tension of the meter-counting synchronous conveyor belt, the floating right drive wheel of the lower wheel group can ensure The upper and lower conveyor belts can be in reliable contact with the cable under test, and at the same time, the compression spring exerts an upward force on the right drive wheel of the lower wheel set, which will increase the positive pressure between the cable under test and the right drive wheel of the upper wheel set , so as to increase the friction between the cable under test and the right transmission wheel of the upper wheel group, and further avoid the problem of slippage.

Description of drawings

Fig. 1 is the structural representation of embodiment 1 of meter counting device in the present invention;

Figure 2 is a schematic diagram of the cooperation of the swing arm with the right transmission wheel of the upper wheel group and the right transmission wheel of the lower wheel group in Figure 1;

Fig. 3 is the structural representation of embodiment 2 of the meter counting device in the present invention;

FIG. 4 is a schematic diagram of the cooperation between the swing arm and the right transmission wheel of the upper wheel set in FIG. 3 .

Detailed ways

An embodiment of a meter-counting device with measurable belt tension is shown in Figures 1 to 2: it includes a device frame provided with an upper wheel group and a lower wheel group, and the device frame includes an installation base plate 9 with a plate thickness extending in the front-rear direction. , the upper end of the mounting substrate 9 is provided with a handle 8 .

The upper wheel set includes the left transmission wheel 3 of the upper wheel set and the right transmission wheel 11 of the upper wheel set arranged at left and right intervals. The left transmission wheel 1 of the wheel set is located on the corresponding lower side of the left transmission wheel 3 of the upper wheel set, and the right transmission wheel 14 of the lower wheel set is located on the corresponding lower side of the right transmission wheel 11 of the upper wheel set. Set follower wheel. The upper conveyor belt 12 and the lower conveyor belt 5 are respectively wound on the upper wheel group and the lower wheel group for clamping on the upper and lower sides of the corresponding cable under test when in use. Transmission belt, wherein, the right transmission wheel 11 of the upper wheel set is a tensioning wheel provided with a Hall sensor, and the Hall sensor can detect the rotation number of the right transmission wheel of the upper wheel set. Therefore, the upper conveyor belt 12 is a meter-counting synchronous conveyor belt. In the embodiment, the left drive wheel 3 of the upper wheel set and the left drive wheel 1 of the lower wheel set are both rotated and assembled on the mounting base plate 9 through the corresponding axles. The mounting base plate 9 is also hinged with a swing arm 17 whose axis extends in the front-rear direction. The item 15 in the figure represents the hinge shaft of the swing arm. The mounting base plate 9 and the swing arm 17 are located on the front and rear sides of the upper wheel set and the lower wheel set, respectively. The right drive wheel 11 of the wheel set and the right drive wheel 14 of the lower wheel set are both rotatably assembled on the swing arm. The swing arm 17 includes a first vertical arm section 10 and a second vertical arm section 13 arranged up and down. The lower end of the first vertical arm section passes through The folding arm section 16 is connected with the second vertical arm section 13, and the hinge shaft 15 is arranged at the lower end of the second vertical arm section.

A tensioning force adjusting part is arranged between the end of the swing arm away from its hinge shaft and the device frame, a connecting lug plate 4 is fixed on the plate surface of the mounting base plate, and the connecting lug plate 4 is provided with a screw hole with an axis extending in the left and right direction. The tension adjusting component includes a tension adjusting screw 5 penetrating through the screw hole, and a tension adjusting nut 6 is threaded on the tension adjusting screw 5 on the right side of the screw hole. A force measuring sensor 7 is arranged in series on the tensioning force adjusting part. The force measuring sensor in the present invention is a thrust dynamometer that can measure the thrust force. It is hingedly connected with the tension adjusting screw. Item 21 in FIG. 2 represents the hinge shaft for realizing the hinged connection between the swing arm and the thrust dynamometer.

When in use, the cable under test 2 is paid off through the corresponding tension pay-off machine, the cable under test passes between the upper conveyor belt and the lower conveyor belt, and the tension adjustment nut is rotated, and the tension adjustment screw will pass through the thrust dynamometer. Apply thrust to the swing arm to realize the tensioning of the tensioning wheel. During the tensioning process, the tensioning wheel, that is, the right transmission wheel of the upper wheel group, swings to the right with the swing arm, and the right transmission wheel of the lower wheel group also swings accordingly. The gap between the right transmission wheel of the upper wheel group and the right transmission wheel of the lower wheel group will not change, to ensure that the gap between the left transmission wheel of the upper wheel group and the left transmission wheel of the lower wheel group and the right transmission wheel of the upper wheel group and the right transmission wheel of the lower wheel group The gap between the transmission wheels is consistent, so as to ensure the reliable contact between the upper conveyor belt, the lower conveyor belt and the cable under test, ensure the friction force, and avoid the problem of slippage between the synchronous conveyor belt and the cable under test. In other embodiments of the present invention, the tensioning force adjusting member may also be located on the right side of the swing arm, and at this time, the tensioning force adjusting member realizes the tensioning of the tensioning wheel by applying a pulling force to the swinging arm.

Embodiment 2 of a meter measuring device with measurable tension force is shown in Figures 3 to 4: Embodiment 2 is different from Embodiment 1 in that the right transmission wheel 14 of the lower wheel set is not installed on the swing arm 17, An arc-shaped guide long hole 18 whose axis extends in the front-rear direction is opened on the installation base plate of the device frame. The axle 20 of the right transmission wheel 14 of the lower wheel group is guided and assembled in the arc-shaped guide long hole 18. The hole is provided with a compression spring 19 that exerts upward force on the right transmission wheel of the lower wheel set, and the movement path of the right transmission wheel of the lower wheel set is parallel to the movement path of the right transmission wheel of the upper wheel set. In addition, the mounting base plate 9 and the right transmission wheel 11 of the upper wheel set are respectively located on the front and rear sides of the swing arm 17 . In this scheme, when the swing arm swings to the right to tighten the upper conveyor belt, the right transmission wheel of the upper wheel group exerts pressure on the right transmission wheel of the lower wheel group through the cable under test, and the right transmission wheel of the lower wheel group is guided along the arc. The hole moves to avoid it, and the compression spring 19 can also increase the positive pressure between the cable under test and the right transmission wheel of the upper wheel group.

Claims (6)

1. A meter-counting device with a measurable tension force, comprising a device frame provided with an upper wheel group and a lower wheel group, and at least one transmission wheel in the upper wheel group is a meter wheel whose axis extends in the front-rear direction. The wheel group and the lower wheel group are respectively wound with an upper conveyor belt and a lower conveyor belt which are clamped on the upper and lower sides of the corresponding tested cable when in use, wherein the upper conveyor belt is a meter-counting synchronous conveyor belt, which is characterized in that: one of the upper wheel groups The transmission wheel is a tensioning wheel, and the device frame is hinged with a swing arm whose axis extends in the front-rear direction. The tensioning force adjusting part, the device frame is provided with a screw hole, the tensioning force adjusting part comprises a tensioning force adjusting screw which penetrates through the screw hole, and the tension adjusting screw is threaded on at least one side of the screw hole The tension adjusting nut is provided with a load cell in series on the tension adjusting part. 2 . The meter counting device according to claim 1 , wherein one end of the load cell is hingedly connected to the swing arm, and the other end of the load cell is hingedly connected to the tension adjusting screw. 3 . 3. The meter counting device according to claim 1 or 2, characterized in that: the upper wheel set and the lower wheel set both comprise two described transmission wheels arranged at left and right intervals, wherein the two transmission wheels of the upper wheel set are respectively The left transmission wheel of the upper wheel group and the right transmission wheel of the upper wheel group, the two transmission wheels of the lower wheel group are respectively the left transmission wheel of the lower wheel group and the right transmission wheel of the lower wheel group, and the device frame includes the installation for the hinged installation of the swing arm The base plate, the left transmission wheel of the upper wheel group and the left transmission wheel of the lower wheel group are all rotatably assembled on the installation base plate, and the right transmission wheel of the upper wheel group is the tension wheel. 4 . The meter counting device according to claim 3 , wherein the right transmission wheel of the lower wheel set is hinged on the swing arm, and the hinge shaft of the swing arm is located on the lower side of the upper wheel set and the lower wheel set. 5 . 5 . The meter counting device according to claim 4 , wherein the mounting base plate and the swing arm are located on the front and rear sides of the upper wheel set and the lower wheel set. 6 . 6. The meter counting device according to claim 3, characterized in that: the right transmission wheel of the lower wheel group is located on the corresponding lower side of the right transmission wheel of the upper wheel group, and the installation base plate is provided with an arc guide length with an axis extending in the front-rear direction. The axle guide of the right drive wheel of the lower wheel set is assembled in the arc-shaped guide slot, and the arc-shaped guide slot is provided with a compression spring that exerts an upward force on the right drive wheel of the lower wheel set. The movement path of the right transmission wheel of the group is parallel to the movement path of the right transmission wheel of the upper wheel group.

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