Telescopic structure for a lower hopper

Abstract

The utility model relates to automatic car loader technical field, concretely relates to a retractable structure for lower hopper, including first cylinder, the second cylinder of sliding sleeve is established in first cylinder, the third cylinder is slidingly sleeved in the second cylinder, the end of third cylinder sets up lower hopper, the annular piece is set up on one lateral wall of second cylinder, the annular piece is constrained as can circular rotation along the length direction of second cylinder, first clamping block and second clamping block are fixedly arranged on the annular piece, the movement direction of first clamping block and second clamping block is always opposite, first clamping block and first cylinder fixed connection, second clamping block and third cylinder fixed connection, when first drive device drives second cylinder to move to the distal end, the annular piece rotates, drives third cylinder to move to the direction of far away from second cylinder. The utility model is applicable to the automation warehouse or production line scene of needing big stroke, high accuracy vertical blanking.

Description

Technical Field

[0001] This utility model relates to the field of automatic loading machine technology, specifically to a telescopic structure for the lower loading hopper. Background Technology

[0002] Automatic loading machines are used to transfer materials from a conveyor line to a transport vehicle. During this process, a lower bag hopper is used to place bags from the sliding conveyor belt into the transport vehicle's cargo bed. Because the vertical distance between the transport vehicle and the automatic loading machine is relatively large, a lifting device is generally required to raise and lower the lower bag hopper. Existing automatic loading machines mostly adopt a two-stage lifting structure, placing the lower bag hopper at the end of a telescopic inner cylinder. The existing structure has the following problems: When the distance between the lower bag bucket and the transport vehicle is large, the existing two-stage lifting structure has insufficient extension stroke, and the lower bag bucket cannot reach the unloading position, affecting the stacking. If the length of the outer and inner cylinders of the two-stage lifting structure is extended, the inner cylinder is prone to shaking during the descent of the lower bag bucket, affecting the stacking accuracy. The heavier the bag, the greater the deviation of the landing point. The length of the inner and outer cylinders seriously restricts the load capacity of the lower bag bucket.

[0003] Therefore, there is an urgent need for a telescopic structure for the lower hopper with a long stroke and high feeding accuracy. Summary of the Invention

[0004] This invention addresses the problems of short stroke and low descent accuracy in existing telescopic structures for lower hoppers by providing a telescopic structure for lower hoppers that is suitable for automated warehousing or production line scenarios requiring large stroke and high-precision vertical unloading.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: A telescopic structure for a lower hopper includes a first cylinder, a second cylinder slidably fitted inside the first cylinder, and a first driving device for moving the second cylinder relative to the first cylinder. A third cylinder is slidably fitted inside the second cylinder, and a lower hopper is provided at the end of the third cylinder. An annular member is provided on one side wall of the second cylinder, and the annular member is constrained to rotate cyclically along the length direction of the second cylinder. A first clamping block and a second clamping block are fixedly provided on the annular member, and the movement directions of the first clamping block and the second clamping block are always opposite. The first clamping block is fixedly connected to the first cylinder, and the second clamping block is fixedly connected to the third cylinder. When the first driving device drives the second cylinder to move to a distal end, the annular member rotates, causing the third cylinder to move away from the second cylinder. The first cylinder, the second cylinder, and the third cylinder form a nested structure that can slide relative to each other.

[0006] Furthermore, the first cylinder is equipped with a gear that meshes with the rack and pinion track, a second drive device that drives the gear to rotate, and a traveling wheel that assists in movement. The first cylinder is the fixed end of the telescopic structure.

[0007] Furthermore, the annular component is an annular chain, and two first sprockets are arranged along the length direction on the first outer wall of the second cylinder. An annular chain is sleeved on the two first sprockets, and the annular chain meshes with the first sprockets. The second and third cylinders are telescopic ends of a telescopic structure.

[0008] Furthermore, the first driving device includes a drive motor fixedly mounted on the first cylinder, a second sprocket driven through the output shaft of the drive motor, and a chain mounted on the second cylinder and meshing with the second sprocket. The first driving device drives the second cylinder and causes the third cylinder to move.

[0009] Furthermore, two parallel "U"-shaped chains are arranged along the length of the second outer wall of the second cylinder. A drive sprocket is provided on the protruding side of the chain, and a driven sprocket is provided on the folding side of the chain. Both the drive and driven sprockets are rotatably mounted on the inner wall of the first cylinder. The drive sprockets of the two chains are connected by a reducer, and the driven sprockets are rigidly connected by a sprocket shaft. The first drive device drives the drive sprocket, causing the second cylinder to move relative to the first cylinder.

[0010] Furthermore, guide wheel assemblies are provided between the first and second cylinders, and between the second and third cylinders. The guide wheel assemblies limit the position of the second and third cylinders, reducing lateral swaying.

[0011] Furthermore, the lower hopper is rotatably connected to the third cylinder, facilitating the stacking of material bags by the lower hopper.

[0012] The beneficial effects of this utility model through the above technical solution are as follows: This utility model consists of a first cylinder, a second cylinder, and a third cylinder that can slide relative to each other, nested from the outside in. An annular member is provided on the second cylinder, with one side of the annular member connected to the first cylinder via a first clamping block and the other side of the annular member connected to the third cylinder via a second clamping block. When the first driving device drives the second cylinder to move relative to the first cylinder, the stroke is naturally transmitted to the third cylinder, realizing the double-speed extension and retraction of the lower hopper. It is particularly suitable for automated unloading operations with large stroke and high precision. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the second cylinder of this utility model; Figure 3 This is a schematic diagram of the structure of the first driving device of this utility model; Figure 4 This is a schematic diagram of the structure of the third cylinder of this utility model; The numbers in the attached diagram are as follows: 1 is the first cylinder, 11 is the first drive device, 12 is the gear, 13 is the second drive device, 14 is the traveling wheel, 15 is the second sprocket, 2 is the second cylinder, 21 is the ring-shaped component, 22 is the first clamping block, 23 is the second clamping block, 24 is the first sprocket, 25 is the chain, 3 is the third cylinder, and 4 is the lower hopper. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: like Figures 1-4 As shown, this embodiment provides a telescopic structure for a lower bag, including a first cylinder 1, a second cylinder 2 slidably sleeved inside the first cylinder 1, and a first driving device 11 for driving the second cylinder 2 to move relative to the first cylinder 1. A third cylinder 3 is slidably sleeved inside the second cylinder 2, and the first cylinder 1, the second cylinder 2, and the third cylinder 3 form a nested structure.

[0015] like Figure 1 As shown, the height of the first cylinder 1 is less than the height of the second cylinder 2. A rectangular hole is provided in the middle of the first cylinder 1 for the second cylinder 2 to pass through. Gears 12 that mesh with the rack and pinion track, auxiliary traveling wheels 14, and a second drive device 13 that drives the gears 12 to rotate are symmetrically arranged on the outer periphery of the first cylinder 1. A gear suspension shaft is connected between the two gears 12. The gear suspension shaft is fixed to the outer wall of the first cylinder 1 by bearings. The second drive device 13 includes a reducer and a drive motor. The gear suspension shaft is driven by the output shaft of the reducer, and the input shaft of the reducer is driven by the output shaft of the drive motor.

[0016] Three bearings are fixed on each of the two opposite side walls of the first cylinder 1 along the travel path of the chain 25. A sprocket shaft is rotatably connected inside the bearing. A drive motor and a reducer are fixed between the two side walls. The first drive device 11 includes a drive motor fixedly mounted on the first cylinder 1, a second sprocket 15 that is drively connected to the output shaft of the drive motor, the second sprocket 15 including a driving sprocket and a driven sprocket, and a chain 25 mounted on the second cylinder 2 and meshing with the second sprocket 15.

[0017] Specifically, such as Figure 2As shown, two parallel "U"-shaped chains 25 are arranged along the length of the second outer wall of the second cylinder 2. The two ends of the chains 25 are fixed to the second cylinder 2 by supports. The protruding part of the chains 25 passes through the side wall of the first cylinder 1 and connects to the output shaft of the reducer. A drive sprocket is provided on the protruding side of the chains 25, and a driven sprocket is provided on the folding side of the chains 25. Both the drive sprocket and the driven sprocket are rotatably mounted on the inner side wall of the first cylinder 1. The drive sprockets of the two chains 25 are connected by a reducer, and the driven sprockets are rigidly connected by a sprocket shaft. The reducer is a servo right-angle planetary reducer, and the input shaft of the reducer is connected to the output shaft of the drive motor.

[0018] like Figure 2 As shown, an annular member 21 is provided on one side wall of the second cylinder 2. The annular member 21 is an annular chain. Two first sprockets 24 are rotatably provided on the first outer wall of the second cylinder 2 along the length direction. An annular chain is sleeved on the two first sprockets 24. The annular chain meshes with the first sprockets 24. The annular member 21 is constrained to be able to rotate cyclically along the length direction of the second cylinder 2.

[0019] The annular member 21 is fixedly provided with a first clamping block 22 and a second clamping block 23. Both the first clamping block 22 and the second clamping block 23 are chain clamping blocks. The movement directions of the first clamping block 22 and the second clamping block 23 are always opposite. The first clamping block 22 is fixedly connected to the inner wall of the first cylinder 1. The side wall of the second cylinder 2 where the annular member 21 is installed is provided with a rectangular groove. The second clamping block 23 passes through the rectangular groove and is fixedly connected to the inner third cylinder 3. When the first driving device 11 drives the second cylinder 2 to move to the far end, the first clamping block 22 drives the annular member 21 to rotate. The rotation of the annular member 21 drives the third cylinder 3 to move away from the second cylinder 2.

[0020] When the second cylinder 2 moves downward by one unit length relative to the first cylinder 1, the third cylinder 3 moves downward by one unit length relative to the second cylinder 2. That is, when the second cylinder 2 moves downward by one unit length, the third cylinder 3 moves downward by two units length. The multi-stage telescopic structure extends the stroke of the lower hopper 4. Compared with the existing two-stage telescopic structure, it not only has a longer stroke but also better verticality and more stable material feeding.

[0021] To enhance structural stability, both the annular chain 21 and the chain 25, which are the ring-shaped components 21, adopt a double-row chain structure, and both the first sprocket 24 and the second sprocket 15 are double-row sprockets.

[0022] To facilitate smoother extension and retraction, guide wheel assemblies are provided between the first cylinder 1 and the second cylinder 2, and between the second cylinder 2 and the third cylinder 3. First guide wheels are positioned at the four corners of the rectangular hole in the first cylinder 1, and these first guide wheels roll in contact with the outer wall of the second cylinder 2. A total of eight sets of first guide wheels are provided at the top and bottom of the first cylinder 1. Second guide wheels are symmetrically arranged on the outer wall of the third cylinder 3, and these second guide wheels roll in contact with the inner wall of the second cylinder 2.

[0023] like Figure 3 As shown, the upper part of the third cylinder 3 is rectangular, and a second clamping block 23 is fixedly installed on one side wall of the upper part of the third cylinder 3. The second clamping block 23 is provided with a snap-fit ​​groove that matches the chain 25. The second clamping block 23 can be fixed with bolts. The lower hopper 4 is provided at the end of the third cylinder 3.

[0024] The lower hopper 4 is rotatably connected to the third cylinder 3 via a servo rotary platform. The bottom of the lower hopper 4 is equipped with an openable raft plate, which is controlled by a cylinder. When the raft plate is closed, the lower hopper 4 can hold material bags; when the raft plate is open, the material bags in the lower hopper 4 fall out.

[0025] The working principle of this utility model: like Figure 1 As shown, in use, the first cylinder 1 is fixed on the rack and pinion track, and the second drive device 13 drives the second cylinder 2 to move downward. Since the first cylinder 1 is connected to the first clamping block 22, the first clamping block 22 moves upward relative to the second cylinder 2, causing the annular member 21 to rotate clockwise. The second clamping block 23 located on the other side of the annular member 21 moves downward and causes the third cylinder 3 to move downward, thereby realizing the unfolding of the telescopic structure.

[0026] When it is necessary to retract the lower hopper 4, the second drive device 13 drives the second cylinder 2 to move upward, thereby realizing the retraction of the third cylinder 3.

[0027] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A telescopic structure for a lower bag, comprising a first cylindrical body (1), a second cylindrical body (2) slidably sleeved within the first cylindrical body (1), and a first driving device (11) for driving the second cylindrical body (2) to move relative to the first cylindrical body (1), characterized in that, A third cylinder (3) is slidably sleeved inside the second cylinder (2), and a lower hopper (4) is provided at the end of the third cylinder (3); a ring member (21) is provided on one side wall of the second cylinder (2), and the ring member (21) is constrained to rotate cyclically along the length direction of the second cylinder (2). A first clamping block (22) and a second clamping block (23) are fixedly provided on the ring member (21). The moving directions of the first clamping block (22) and the second clamping block (23) are always opposite. The first clamping block (22) is fixedly connected to the first cylinder (1), and the second clamping block (23) is fixedly connected to the third cylinder (3). When the first driving device (11) drives the second cylinder (2) to move towards the distal end, the ring member (21) rotates and drives the third cylinder (3) to move away from the second cylinder (2).

2. The telescopic structure for a lower hopper according to claim 1, characterized in that, A gear (12) meshing with a rack track, a second driving device (13) for driving the gear (12) to rotate, and a traveling wheel (14) for auxiliary traveling are provided on the first cylinder (1).

3. The telescopic structure for a lower hopper according to claim 1, characterized in that, The ring member (21) is an endless chain. Two first sprockets (24) are provided along the length direction on the first outer wall of the second cylinder (2). The endless chain is sleeved on the two first sprockets (24), and the endless chain meshes with the first sprockets (24).

4. The telescopic structure for a lower hopper according to claim 1, characterized in that, The first driving device (11) includes a driving motor fixedly provided on the first cylinder (1), a second sprocket (15)传动连接(这里原中文“传动连接”表述不太准确,推测是“传动相连”之类的意思,英文可翻译为“drivingly connected”) to the output shaft of the driving motor, and a chain (25) provided on the second cylinder (2) and meshing with the second sprocket (15).

5. A telescopic structure for a lower hopper according to claim 4, characterized in that, Two "U"-shaped chains (25) are arranged in parallel along the length direction on the second outer wall of the second cylinder (2). Driving sprockets are provided on the protruding sides of the chains (25), and driven sprockets are provided on the folded-back sides of the chains (25). The driving sprockets and the driven sprockets are both rotatably provided on the inner side wall of the first cylinder (1). The driving sprockets between the two chains (25) are drivingly connected through a speed reducer, and the driven sprockets between the two chains (25) are rigidly connected through a sprocket shaft.

6. The telescopic structure for a lower hopper according to claim 1, characterized in that, Guide wheel assemblies are provided between the first cylinder (1) and the second cylinder (2), and between the second cylinder (2) and the third cylinder (3).

7. A telescopic structure for a lower hopper according to claim 1, characterized in that, The lower hopper (4) is rotatably connected to the third cylinder (3).

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