A clamp with self-locking function and a suspension transport vehicle

Abstract

The present invention provides a clamp with a self-locking function and a suspension transport vehicle, comprising: a first frame, on which a first driver is provided; a lower pressure frame, the first driver being transmission-connected to the lower pressure frame, and a transmission connecting rod being pivotally connected to the lower pressure frame; a pair of symmetrically arranged clamping claws, the clamping claws being pivotally connected to the lower end of the first frame, the transmission connecting rod being pivotally connected to the clamping claws, and a clamping cavity being formed between the lower pressure frame and the pair of clamping claws; the clamping claws including a mounting plate, to which a set of spaced limiting plates are connected, the limiting plates including a support plate having a first limiting side edge; and a locking device provided on one side of the clamping claws. This device can reduce the load specification of the driver, saving manufacturing costs, and can ensure the reliability of the clamp locking to the closed state. In addition, the locking device has the advantage of mechanical linkage self-locking, which has the advantage of simple control.

Description

Technical Field

[0001] The present invention relates to the field of suspension transport vehicles, and in particular to a clamp with a self-locking function and a suspension transport vehicle. Background Art

[0002] In industrial automation (such as logistics sorting, automotive assembly lines, and warehouse handling), grippers are core equipment for grasping and transferring objects. Traditional grippers typically rely on actuators (such as hydraulic cylinders, pneumatic cylinders, or motors) to provide continuous thrust to maintain their closed position, ensuring that the grasped object (such as bagged materials or boxes) does not fall out during movement. However, maintaining the gripper's closed position requires high actuator loads, increasing manufacturing costs. Furthermore, in the event of a sudden power outage or drive system failure, the gripper could lose its grip and release, causing the object to fall, resulting in insufficient locking reliability. Summary of the Invention

[0003] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a clamp with a self-locking function, which can reduce the load specifications of the driver, save manufacturing costs, and ensure the reliability of the clamp being locked to the closed state. In addition, the locking device has the advantage of mechanical linkage self-locking and simple control.

[0004] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0005] A clamp with a self-locking function, comprising:

[0006] a first frame, wherein a first driver is provided on the first frame;

[0007] A pair of symmetrically arranged claws are pivotally connected to the lower end of the first frame, forming a holding cavity between the pair of claws, and the first driver is drivingly connected to the pair of claws; the claws include a mounting plate, connected to which is a set of spaced limiting plates, the limiting plates including a support plate, and the support plate is provided with a first limiting side edge;

[0008] The invention also includes a locking device provided on one side of the claw, the locking device including:

[0009] A locking frame slidably mounted on the mounting plate;

[0010] A lock plate mounted on the lock frame, the lock plate being arranged on a side of the support plate away from the first limiting side edge, and the lock plate extending out of the side of the support plate along the thickness direction of the support plate to form a limiting stop edge;

[0011] A return spring elastically connected to the support plate;

[0012] The first driver is used to synchronously drive a pair of claws to rotate, so as to switch the gripper between an open state and a closed state;

[0013] When the clamp moves from the open state to the closed state, the support plate on the opposite side of the clamping claw will abut against the lock plate and push the lock frame to slide;

[0014] When the clamp is in the closed state, the first limit side edge is located at the bottom of the clamping cavity, and the front ends of the supporting plates on the corresponding two sides of the clamping claws are staggered and overlapped with each other. The reset spring pushes the lock frame to reset and move until the limit stop edge is located below the supporting plate on the opposite side to limit the clamping claws from rotating in the opening direction.

[0015] Furthermore, the clamp with a self-locking function in the present application further includes a lower pressure frame, the first driver is in transmission connection with the lower pressure frame, a transmission connecting rod is pivotally connected to the lower pressure frame; the transmission connecting rod is pivotally connected to the clamping claw;

[0016] The first driver drives the lower pressing frame to move longitudinally to synchronously drive a pair of gripping claws, which rotate to switch the gripper between the open state and the closed state;

[0017] A limiting top surface is provided at the bottom of the lower pressure frame; the limiting top surface is located at the top of the holding cavity. When the clamp switches from the open state to the closed state, the limiting top surface descends to compress the longitudinal space of the holding cavity.

[0018] Furthermore, in the present application, a clamp with a self-locking function, the limiting plate also includes a side plate, a second limiting side edge is provided on the side plate, the extension directions of the support plate and the side plate are perpendicular to each other and are integrally connected at the end to form an L shape, the first limiting side edge and the second limiting side edge are the inner edges of the support plate and the side plate respectively, and the side plate is connected to the mounting plate on the side away from the second limiting side edge; when the clamp is in the open state, the front end of the support plate is vertically placed downward as a whole, the first limiting side edges on a pair of claws are located on both sides of the clamping cavity, the side plates are horizontally placed at the upper end of the support plate and on both sides of the limiting top surface, and the bottom of the clamping cavity is open; when the clamp is in the closed state, the side plates are vertically placed to limit the two sides of the clamping cavity, and the support plate is horizontally placed at the lower end of the side plates to close the opening at the bottom of the clamping cavity.

[0019] Furthermore, the present application provides a clamp with a self-locking function, and a limiting protrusion is provided on the mounting plate. When the clamp is reset to the open state, the lower end of the limiting protrusion contacts the lower pressure frame to limit the lower pressure frame from continuing to move upward and the clamping claw from continuing to flip in the opening direction. As a preferred solution of the present application, based on the above device, it is possible to achieve self-locking positioning of the clamping claw and the lower pressure frame when the clamp is reset to the open state. Compared with directly controlling the moving stroke of the lower pressure frame to achieve positioning, it can ensure positioning accuracy and improve positioning efficiency. In addition, compared with setting a limiting component on the outside of the clamp, it has the advantage of a compact structure.

[0020] Furthermore, the present application provides a clamp with a self-locking function, wherein a pair of sliding seats are provided on a lock frame, a pair of guide posts are fixed on the side of the mounting plate away from the limit plate, a limit baffle is provided on the end of the guide post away from the mounting plate, the sliding seat is slidably mounted on the guide posts, a return spring is mounted on the guide posts and its two ends respectively abut against the limit baffle and the sliding seat; a sliding connecting plate is provided on the lock plate, a positioning protrusion is provided on the sliding connecting plate, a slide groove is provided on a support plate connected to the lock plate, and the positioning protrusion is slidably arranged in the slide groove. As a preferred embodiment of the present application, the lock frame is slidably connected to the mounting plate through the sliding seat and the guide post, and the sliding connection of the slide groove and the positioning protrusion supports the lock plate, thereby ensuring the stability of the sliding movement of the lock frame and the lock plate relative to the clamping claw and improving the load-bearing capacity after the clamp is locked.

[0021] Furthermore, a clamp with a self-locking function in the present application also includes an unlocking protrusion, which is arranged on a lock frame or a lock plate. The unlocking protrusion is used to cooperate with an external unlocking component to drive the lock frame to move to the limit edge to release the limit of the opposite side support plate.

[0022] Furthermore, a clamp with a self-locking function in the present application also includes a transfer platform, on which a number of longitudinally extending partition cavities are provided, the partition cavities extending out of the upper end surface and a pair of side surfaces of the transfer platform, and the number of partition cavities are arranged along the arrangement direction of the limiting plates, and a limiting groove for placing materials is provided on the upper end surface of the transfer platform; in the process of switching the clamp from an open state to a closed state, the support plates on both sides pass through the partition cavity from the side of the transfer platform to limit the material placed on the limiting groove in the clamping cavity.

[0023] Furthermore, the present application provides a clamp with a self-locking function, and the lower pressure frame includes a horizontal limiting base plate and vertical plates fixed on both sides of the limiting base plate. The limiting bottom surface is arranged at the bottom of the limiting base plate, the vertical plate is longitudinally slidably connected to the first frame body, and the transmission connecting rod is rotatably connected to the vertical plate.

[0024] Furthermore, in the present application, a clamp with a self-locking function is provided, wherein a pair of connecting plates are connected between a pair of vertical plates, a limiting top plate is fixed on the connecting plates, the limiting top plate is arranged above the limiting bottom plate, a vertical guide rod is provided between the limiting bottom plate and the limiting top plate, a sliding sleeve on the guide rod is provided with a pressure seat, a pressure block is provided at the bottom of the pressure seat, a through groove corresponding to the pressure block is provided on the limiting bottom plate, a compression spring is provided on the guide rod, the two ends of the compression spring are respectively in contact with the limiting top plate and the pressure seat, and the bottom of the pressure block passes through the through groove and is located below the limiting bottom plate in the natural state. As a preferred embodiment of the present application, the pressure seat is elastically provided on the lower pressure frame, and when the clamp is in the closed state, the pressure block provided on the pressure seat passes through the limiting bottom plate to longitudinally compact the material in the clamping cavity.

[0025] A suspended transport vehicle includes a vehicle body and a clamp with a self-locking function. A second frame is installed at the bottom of the vehicle body. A first frame is longitudinally slidably installed on the second frame. A second drive is provided on the second frame. The second drive is transmission-connected to the first frame for driving the first frame to move up and down on the second drive.

[0026] It can be seen from the above technical solution that the present invention has the following beneficial effects:

[0027] The present invention provides a clamp with a self-locking function. Since a pair of clamping claws rotate synchronously during the process of switching between the open and closed states of the clamp, and in the closed state, the front ends of the support plates on both sides are staggered and overlapped, then inevitably, in the process of moving to the closed state, the front end of the support plate on one side will pass through the support plate on the opposite side, that is, be exposed from the side of the support plate on the opposite side away from the first limit side edge, and the front end position of the support plate will move backward on the support plate on the other side, thereby pushing the lock plate arranged on the side of the support plate away from the first limit side edge to move to make room for the movement of the support plate. As the clamp is switched to the closed state, since the support plates on both sides overlap with each other, the front ends of the support plates on both sides are within the side of the opposite support plate, that is, the front ends of the support plates do not expose the side of the opposite support plate away from the first limit side edge, thereby causing the front end of the support plate on the clamp on the opposite side to disengage from the transmission surface, and the lock frame can be reset to the lower side of the opposite support plate where the limit stop edge is limited by the reset spring. Because the claws on both sides rotate synchronously, the claw on one side being restricted from rotating also prevents the claw on the opposite side from rotating, allowing the locking device to lock the gripper in the closed state. This reduces the thrust applied by the first actuator to maintain the gripper in the closed state, lowering the load specification of the first actuator and reducing manufacturing costs. Furthermore, the locking device's mechanically linked self-locking properties offer the advantage of simple control.

[0028] The present invention provides a clamp with a self-locking function, which can realize bottom limitation and top compression of a clamping cavity through one drive. Compared with separately setting a drive to realize top space compression, it has the advantage of high clamping and limiting efficiency.

[0029] The present invention provides a suspension transport vehicle, which can realize efficient transfer of materials and is particularly suitable for the transportation of bagged flexible materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of the three-dimensional structure of a clamp with a self-locking function in an embodiment of the present application (in an open state);

[0031] Figure 2 A schematic diagram of the three-dimensional structure of a clamp with a self-locking function in an embodiment of the present application (in a closed state);

[0032] Figure 3 for Figure 2 An exploded diagram of a component of a gripper with a self-locking function;

[0033] Figure 4 This is a schematic structural diagram of a claw provided with a locking device in an embodiment of the present application;

[0034] Figure 5 for Figure 4 Exploded diagram of the claw components in the game;

[0035] Figure 6 Schematic diagram of the lower pressure frame in the embodiment of the present application;

[0036] Figure 7 This is a schematic diagram of the principle of a clamp locking device with a self-locking function in an embodiment of the present application;

[0037] Figure 8 This is a schematic diagram of the principle of a clamp with a self-locking function clamping a material on a transfer platform in an embodiment of the present application;

[0038] Figure 9 for Figure 8 Schematic diagram of the floor plan;

[0039] Figure 10 Schematic diagram of the structure of the transfer platform in the embodiment of the present application;

[0040] Figure 11 Schematic diagram of the positional relationship between the limiting protrusion and the lower pressure frame when the clamp with a self-locking function in an embodiment of the present application is in an open state;

[0041] Figure 12 This is a schematic structural diagram of the unlocking seat in an embodiment of the present application;

[0042] Figure 13 This is a schematic structural diagram of a suspension transport vehicle in an embodiment of the present application;

[0043] Figure 14 This is a schematic diagram of the unloading process of the suspended transport vehicle in an embodiment of the present application.

[0044] In the picture:

[0045] 1-second frame; 11-second drive;

[0046] 2-first frame; 21-first drive;

[0047] 3-lower pressure frame; 31-transmission connecting rod; 33-limiting bottom plate; 330-through slot; 34-vertical plate; 35-connecting plate; 36-limiting top plate; 37-guide rod; 371-compression spring; 38-pressure seat; 39-pressure block;

[0048] 4 - claw; 41 - limit plate; 411 - support plate; 4110 - first limit side edge; 412 - side plate; 4120 - second limit side edge; 4111 - slide; 42 - mounting plate; 421 - limit protrusion; 422 - guide post; 423 - limit baffle; 43 - transmission plate; 431 - first rotation joint; 432 - second rotation joint;

[0049] 441 - lock frame; 4411 - sliding seat; 442 - lock plate; 4421 - limit stop edge; 4422 - transmission surface; 443 - return spring; 444 - sliding connecting plate; 4441 - positioning protrusion; 445 - unlocking protrusion;

[0050] 5-body;

[0051] 6-transfer platform; 60-interval cavity; 61-limiting groove;

[0052] 7-Unlock seat. DETAILED DESCRIPTION

[0053] Example 1

[0054] like Figures 1 to 3 As shown, this embodiment provides a clamp with a self-locking function, comprising:

[0055] A first frame 2 is provided with a first driver 21; a lower pressure frame 3, the first driver 21 is transmission-connected to the lower pressure frame 3, and a transmission connecting rod 31 is pivotally connected to the lower pressure frame 3; a pair of symmetrically arranged claws 4 are pivotally connected to the lower end of the first frame 2, and the transmission connecting rod 31 is pivotally connected to the claws 4, forming a holding cavity between the lower pressure frame 3 and the pair of claws 4; the claws 4 include a mounting plate 42, and a group of spaced limiting plates 41 are connected to the mounting plate 42, and the limiting plates 41 include a supporting plate 411, and the supporting plate 411 is provided with a first limiting side edge 4110;

[0056] like Figure 4 and Figure 5 As shown, it also includes a locking device provided on the claw 4 on one side, the locking device including:

[0057] The lock frame 441 is slidably mounted on the mounting plate 42; the lock plate 442 mounted on the lock frame 441, the lock plate 442 is arranged on the side of the support plate 411 away from the first limit side edge 4110, and the lock plate 442 extends out of the side of the support plate 411 along the thickness direction of the support plate 411 to form a limit stop edge 4421, and a transmission surface 4422 is provided on the side of the limit stop edge 4421 near the front end of the support plate 411, and the transmission surface 4422 is always located at the rear side of the front end of the support plate 411; the return spring 443 elastically connected to the support plate 411 applies an elastic force to the lock frame 441 to slide toward the front end of the support plate 411; the first driver 21 is used to drive the lower pressure frame 3 to move longitudinally to synchronously drive a pair of claws 4 to rotate, so as to realize the switching of the clamp between the open state and the closed state; Figure 7 As shown, during the movement of the clamp from the open state to the closed state, the front end of the support plate 411 on the opposite side of the clamping claw 4 will abut against the transmission surface 4422 and push the lock frame 441 to slide, so as to make room for the support plate 411 to move; after the clamp is in the closed state, the first limiting side edge 4110 is limited to the bottom of the clamping cavity, and the front ends of the support plates 411 on the corresponding two sides of the clamping claws 4 are staggered and overlapped with each other to limit the bottom of the clamping cavity, and the front end of the support plate 411 on the opposite side of the clamping claw 4 is disengaged from the transmission surface 4422, and the reset spring 443 pushes the lock frame 441 to reset and move until the limiting edge 4421 is limited to below the support plate 411 on the opposite side to limit the rotation of the clamping claw 4 in the opening direction.

[0058] Based on the above device, since a pair of claws 4 rotate synchronously during the process of the clamp switching between the open and closed states, and when in the closed state, the front ends of the support plates 411 on both sides are staggered and overlap, then inevitably, in the process of moving to the closed state, the front end of the support plate 411 on one side will pass through the support plate 411 on the opposite side, that is, it will be exposed from the side of the support plate 411 on the opposite side away from the first limiting side edge 4110, and the front end position of the support plate 411 will move backward on the support plate 411 on the other side, thereby pushing the lock plate 442 set on the side of the support plate 411 away from the first limiting side edge 4110 to move to make room for the movement of the support plate 411. After the clamp is switched to the closed state, the supporting plates 411 on both sides overlap with each other, so the front ends of the supporting plates 411 on both sides are located inside the side of the opposite supporting plate 411, that is, the front ends of the supporting plates 411 do not expose the side of the opposite supporting plate 411 away from the first limiting side edge 4110. As a result, the front end of the supporting plate 411 on the opposite holding claw 4 is separated from the transmission surface 4422, and the lock frame 441 is reset to the limiting edge 4421 below the opposite holding claw 411 by the push of the return spring 443. In addition, because the holding claws 4 on both sides rotate synchronously, the holding claw 4 on one side is limited to being unable to rotate, which also causes the holding claw 4 on the opposite side to be unable to rotate, thereby achieving the locking device locking the clamp to the closed state.

[0059] There are three locking plates 442, one set spaced apart in the same direction as the stop plates 41. The transmission surface 4422 is rounded and located at the front end of the locking plates 442, near the side of the support plate 411. As the gripper moves from an open to a closed position, the support plate 411 on the opposite gripper 4 abuts the transmission surface 4422, pushing the lock frame 441 to slide. During this process, the front end of the support plate 411 and the transmission surface 4422 slide relative to each other. By defining the shape and position of the transmission surface 4422 in this application, the stability of the sliding movement is improved.

[0060] In this embodiment, a limiting top surface is provided at the bottom of the lower pressure frame 3; the limiting top surface is located at the top of the holding cavity. When the clamp switches from the open state to the closed state, the limiting top surface descends to compress the longitudinal space of the holding cavity.

[0061] like Figure 3 and Figure 6 As shown, in this embodiment, the lower pressure frame 3 includes a horizontal limiting base plate 33 and vertical plates 34 fixed on both sides of the limiting base plate 33, the limiting bottom surface is arranged at the bottom of the limiting base plate 33, and the vertical plates 34 are longitudinally slidably connected to the first frame body 2 through guide rails and sliders. The first driver 21 is a pair of cylinders, and the movable rods of a pair of first drivers 21 are respectively installed on a pair of vertical plates 34, and the transmission connecting rod 31 is rotatably connected to the vertical plates 34.

[0062] In this embodiment, a pair of connecting plates 35 are connected between the pair of vertical plates 34. A pair of limiting top plates 36 are fixed to the connecting plates 35. The limiting top plates 36 are arranged above the limiting bottom plate 33. A vertical guide rod 37 is provided between the limiting bottom plate 33 and the limiting top plates 36. A pressure seat 38 is slidably mounted on the guide rod 37. A pressure block 39 is provided at the bottom of the pressure seat 38. A through-slot 330 corresponding to the pressure block 39 is provided on the limiting bottom plate 33. A compression spring 371 is mounted on the guide rod 37. The ends of the compression spring 371 respectively abut the limiting top plates 36 and the pressure seat 38. In a natural state, the bottom of the pressure block 39 passes through the through-slot 330 and is located below the limiting bottom plate 33. The pressure seat 38 is elastically mounted on the lower pressing frame 3. When the clamp is in the closed state, the pressure block 39 disposed on the pressure seat 38 passes through the limiting bottom plate 33 to longitudinally compact the material within the clamping cavity.

[0063] like Figures 2 to 5As shown, in this embodiment, the limit plate 41 also includes a side plate 412, which is provided with a second limit side edge 4120 on the side plate 412. The extension directions of the support plate 411 and the side plate 412 are perpendicular to each other and are integrally connected to the end to form an L shape. The first limit side edge 4110 and the second limit side edge 4120 are respectively the inner edges of the support plate 411 and the side plate 412, and the side plate 412 is connected to the mounting plate 42 away from the second limit side edge 4120; when the clamp is in the open state, the front end of the support plate 411 is vertically arranged downward, and the first limit side edges 4110 on the pair of clamping claws 4 are located on both sides of the clamping cavity. The side plates 412 are horizontally arranged at the upper end of the support plate 411 and on both sides of the limit top surface, and the bottom of the clamping cavity is open; when the clamp is in the closed state, the side plates 412 are vertically arranged to limit the two sides of the clamping cavity, and the support plate 411 is horizontally arranged at the lower end of the side plates 412 to close the opening at the bottom of the clamping cavity.

[0064] The gripper 4 also includes a pair of transmission plates 43 perpendicular to the mounting plate 42. The transmission plates 43 are mounted on either side of the mounting plate 42, with a set of limiting plates 41 disposed between the transmission plates 43. The transmission plates 43 are provided with a first pivot joint 431 and a second pivot joint 432 pivotally connected to the first frame 2 and the transmission link 31, respectively. When the gripper is in the open position, the centerline of the first and second pivot joints 431, 432 is horizontal. When the gripper is in the closed position, the centerline of the first and second pivot joints 431, 432 is vertical, with the second pivot joint 432 positioned below the first pivot joint 431. When the gripper is in the closed position, the gripping cavity is rectangular, with the limiting top surface and the first limiting side edge 4110 limiting the upper and lower ends of the cavity, the second limiting side edges 4120 on either side limiting one pair of side faces of the cavity, and the transmission plates 43 on either side limiting the other pair of side faces of the cavity.

[0065] like Figure 4 and Figure 11 As shown, in this embodiment, a limiting protrusion 421 is provided on the mounting plate 42. When the clamp is reset to the open state, the lower end of the limiting protrusion 421 contacts the lower pressure frame 3 to limit the lower pressure frame 3 from continuing to move upward and the claw 4 from continuing to flip in the opening direction. Based on the above device, the self-locking positioning of the claw 4 and the lower pressure frame 3 can be achieved when the clamp is reset to the open state. Compared with directly controlling the movement stroke of the lower pressure frame 3 to achieve positioning, it can not only ensure positioning accuracy but also improve positioning efficiency. In addition, compared with setting a limiting member on the outside of the clamp, it has the advantage of a compact structure. Specifically, a pair of limiting protrusions 421 are provided on the mounting plate 42. The limiting protrusions 421 are spaced apart in the arrangement direction of the limiting plate 41. The limiting protrusions 421 are rubber pads connected to the mounting plate 42 by screws.

[0066] like Figure 4 and Figure 5As shown, in this embodiment, a pair of sliding seats 4411 are provided on the lock frame 441, and a pair of guide posts 422 are fixed on the side of the mounting plate 42 away from the limit plate 41, and a limit baffle 423 is provided on the end of the guide post 422 away from the mounting plate 42, and the sliding seat 4411 is slidably sleeved on the guide post 422, and the return spring 443 is sleeved on the guide post 422 and the two ends are respectively in contact with the limit baffle 423 and the sliding seat 4411; a sliding connecting plate 444 is provided on the lock plate 442, and a positioning protrusion 4441 is provided on the sliding connecting plate 444, and a sliding groove 4111 is provided on the support plate 411 connected to the lock plate 442, and the positioning protrusion 4441 is slidably set in the sliding groove 4111. The lock frame 441 is slidably connected to the mounting plate 42 via the sliding seat 4411 and the guide post 422. The sliding connection between the slide groove 4111 and the positioning protrusion 4441 supports the lock plate 442, ensuring the stability of the sliding movement of the lock frame 441 and the lock plate 442 relative to the claw 4 and improving the load-bearing capacity after the clamp is locked. In this embodiment, an unlocking protrusion 445 is also included. The unlocking protrusion 445 is disposed on the lock frame 441 or the lock plate 442. The unlocking protrusion 445 is used to cooperate with the external unlocking member to drive the lock frame 441 to move to the limit stop 4421 to release the position of the opposite support plate 411. In this embodiment, the unlocking protrusion 445 is disposed on the side of the lock plate 442 away from the support plate 411 and is located on the side of the lock plate 442 near the lock frame 441.

[0067] Benru Figures 8 and 9 As shown, in the embodiment, a transfer platform 6 is further included, and a plurality of longitudinally extending partition cavities 60 are provided on the transfer platform 6. The partition cavities 60 extend out of the upper end surface and a pair of side surfaces of the transfer platform 6. The plurality of partition cavities 60 are arranged along the arrangement direction of the limiting plates 41. A limiting groove 61 for placing materials is provided on the upper end surface of the transfer platform 6; in the process of switching the clamp from an open state to a closed state, the support plates 411 on both sides pass through the partition cavities 60 from the sides of the transfer platform 6 to limit the materials placed on the limiting grooves 61 in the clamping cavities.

[0068] Example 2

[0069] like Figure 13 As shown, a suspended transport vehicle includes a vehicle body 5 and a clamp with a self-locking function in Example 1, a second frame 1 is installed at the bottom of the vehicle body 5, the first frame 2 is longitudinally slidably installed on the second frame 1 through a guide rail slider, and a second driver 11 is provided on the second frame 1, the second driver 11 is connected to the first frame 2 for driving the first frame 2 to move up and down on the second driver 11, and the specific second driver 11 is a cylinder.

[0070] like Figure 12 and Figure 14As shown, in this embodiment, the external unlocking component is an unlocking seat 7 provided at the unloading station. When the vehicle body 5 moves to the unloading station, the unlocking seat 7 is used to push the unlocking protrusion 445 to move to the limiting edge 4421 to release the limitation of the opposite side support plate 411.

[0071] Based on the above device, efficient material transfer can be achieved, especially for the transportation of bagged flexible materials. The method of using the hanging transport vehicle includes the following steps:

[0072] Step S1: Reset, the second driver 11 and the first driver 21 are reset, the first frame 2 and the lower pressure frame 3 are at the highest point, the clamp is in the open state, and the vehicle body 5 moves to the holding cavity facing the limit groove 61;

[0073] Step S2: descending, the second driver 11 drives the first frame 2 to descend to the lowest point;

[0074] Step S3: Clamping, such as Figure 8 and Figure 9 As shown, the first driver 21 drives the lower pressure frame 3 to descend to the lowest point, and the support plate 411 penetrates the partition cavity 60 from the side of the transfer platform 6 until the clamp is in the closed state and is locked by the locking device; at this time, the support plate 411 supports the bottom of the material on the limiting groove 61, and the side plates 412 on both sides limit the two ends of the material. The other two sides are limited by the transmission plate 43, and the pressure block 39 is elastically pressed on the top of the material; step S4: rising, the second driver 11 drives the first frame 2 to rise to move the clamp to the top of the transfer platform 6; step S5: moving, the car body 5 moves toward the unloading station; step S6: unloading, the car body 5 moves to the unloading station, and in the process of the car body 5 being in place, the unlocking protrusion 445 is driven by the car body 5 as shown Figure 14 The middle part moves to the right and conflicts with the unlocking seat 7. The unlocking protrusion 445 moves to the limit stop edge 4421 to release the limit of the opposite side support plate 411. The first driver 21 drives the lower pressure frame 3 to rise and reset, open the holding cavity, and place the material at the unloading station.

[0075] The technical principles of the present invention have been described above in conjunction with specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and are not to be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will be able to conceive of other specific embodiments of the present invention without inventive effort, and such embodiments will fall within the scope of protection of the present invention.

Claims

1. A clamp with a self-locking function, characterized in that: include: A first frame (2), wherein a first driver (21) is provided on the first frame (2); A pair of symmetrically arranged holding claws (4) are pivotally connected to the lower end of the first frame (2), a holding cavity is formed between the pair of holding claws (4), and a first driver (21) is drivingly connected to the pair of holding claws (4); the holding claws (4) include a mounting plate (42), a group of spaced limiting plates (41) are connected to the mounting plate (42), and the limiting plates (41) include a supporting plate (411), and a first limiting side edge (4110) is provided on the supporting plate (411); It also includes a locking device provided on the claw (4) on one side, the locking device including: A lock frame (441) slidably mounted on the mounting plate (42); a lock plate (442) mounted on the lock frame (441), the lock plate (442) being arranged on a side of the support plate (411) away from the first limiting side edge (4110), the lock plate (442) extending out of the side of the support plate (411) along the thickness direction of the support plate (411) to form a limiting stop edge (4421); A return spring (443) elastically connected to the support plate (411); The first driver (21) is used to synchronously drive a pair of gripping claws (4) to rotate, thereby switching the gripper between an open state and a closed state; During the movement of the clamp from the open state to the closed state, the support plate (411) on the opposite side clamping claw (4) abuts against the locking plate (442) and pushes the locking frame (441) to slide; When the clamp is in the closed state, the first limiting side edge (4110) is limited to the bottom of the clamping cavity, and the front ends of the supporting plates (411) on the corresponding two side clamping claws (4) are staggered and overlapped with each other, and the reset spring (443) pushes the lock frame (441) to reset and move until the limiting blocking edge (4421) is limited to the bottom of the supporting plate (411) on the opposite side to limit the clamping claw (4) from rotating in the opening direction; it also includes a lower pressure frame (3), the first driver (21) is transmission-connected to the lower pressure frame (3), and a transmission connecting rod (31) is pivotally connected to the lower pressure frame (3); the transmission connecting rod (31) is pivotally connected to the clamping claw (4); The first driver (21) drives the lower pressing frame (3) to move longitudinally to synchronously drive a pair of gripping claws (4), which rotate to switch the gripper between an open state and a closed state; The bottom of the lower pressing frame (3) is provided with a limiting top surface; the limiting top surface is located at the top of the holding cavity, and when the clamp is switched from the open state to the closed state, the limiting top surface descends to compress the longitudinal space of the holding cavity; The limiting plate (41) further comprises a side plate (412), a second limiting side edge (4120) being provided on the side plate (412), the extension directions of the supporting plate (411) and the side plate (412) being perpendicular to each other and integrally connected at the end to form an L-shape, the first limiting side edge (4110) and the second limiting side edge (4120) being the inner side edges of the supporting plate (411) and the side plate (412), respectively, and the side of the side plate (412) away from the second limiting side edge (4120) being connected to the mounting plate (42); When the clamp is in the open state, the front end of the support plate (411) is vertically positioned as a whole with the front end facing downward, the first limiting side edges (4110) on the pair of claws (4) are located on both sides of the clamping cavity, the side plates (412) are horizontally placed on the upper end of the support plate (411) and on both sides of the limiting top surface, and the bottom of the clamping cavity is open; When the clamp is in a closed state, the side plates (412) are placed vertically to limit the two sides of the clamping cavity, and the supporting plate (411) is placed horizontally at the lower end of the side plates (412) to close the bottom opening of the clamping cavity.

2. The clamp with self-locking function according to claim 1, characterized in that: The lower pressure frame (3) includes a horizontal limiting bottom plate (33) and vertical plates (34) fixed on both sides of the limiting bottom plate (33), the limiting bottom surface is arranged at the bottom of the limiting bottom plate (33), the vertical plates (34) are longitudinally slidably connected to the first frame body (2), and the transmission connecting rod (31) is rotatably connected to the vertical plates (34).

3. The clamp with self-locking function according to claim 2, characterized in that: A pair of connecting plates (35) are connected between the pair of vertical plates (34), a limiting top plate (36) is fixed on the connecting plates (35), the limiting top plate (36) is arranged above the limiting bottom plate (33), a vertical guide rod (37) is provided between the limiting bottom plate (33) and the limiting top plate (36), a sliding sleeve is provided with a pressure seat (38) on the guide rod (37), a pressure block (39) is provided at the bottom of the pressure seat (38), a through groove (330) corresponding to the pressure block (39) is provided on the limiting bottom plate (33), a compression spring (371) is provided on the guide rod (37), and two ends of the compression spring (371) are respectively in contact with the limiting top plate (36) and the pressure seat (38), and in a natural state, the bottom of the pressure block (39) passes through the through groove (330) and is located below the limiting bottom plate (33).

4. The clamp with self-locking function according to claim 1, characterized in that: A pair of sliding seats (4411) are provided on the lock frame (441), a pair of guide posts (422) are fixed on the side of the mounting plate (42) away from the limiting plate (41), and a limiting baffle (423) is provided on the end of the guide post (422) away from the mounting plate (42), the sliding seat (4411) is slidably sleeved on the guide post (422), and the return spring (443) is sleeved on the guide post (422) and its two ends are respectively in contact with the limiting baffle (423) and the sliding seat (4411); The locking plate (442) is provided with a sliding connecting plate (444), the sliding connecting plate (444) is provided with a positioning protrusion (4441), the supporting plate (411) connected to the locking plate (442) is provided with a sliding groove (4111), and the positioning protrusion (4441) is slidably arranged in the sliding groove (4111).

5. The clamp with self-locking function according to claim 4, characterized in that: The locking mechanism further comprises an unlocking protrusion (445), the unlocking protrusion (445) being arranged on the locking frame (441) or the locking plate (442), and the unlocking protrusion (445) being used to cooperate with an external unlocking member to move to drive the locking frame (441) to move to the limiting stop edge (4421) to release the limiting of the opposite side support plate (411).

6. The clamp with self-locking function according to claim 1, characterized in that: A limiting protrusion (421) is provided on the mounting plate (42). When the clamp is reset to the open state, the lower end of the limiting protrusion (421) contacts the lower pressing frame (3) to limit the lower pressing frame (3) from continuing to move upward and the clamping claw (4) from continuing to flip in the opening direction.

7. The clamp with self-locking function according to claim 1, characterized in that: The transfer platform (6) is provided with a plurality of longitudinally extending spacer cavities (60), the spacer cavities (60) extending from the upper end surface and a pair of side surfaces of the transfer platform (6), the plurality of spacer cavities (60) being arranged along the arrangement direction of the limiting plates (41), and the upper end surface of the transfer platform (6) being provided with a limiting groove (61) for placing materials; when the gripper switches from an open state to a closed state, the supporting plates (411) on both sides pass through the spacer cavities (60) from the side surfaces of the transfer platform (6) to limit the materials placed on the limiting groove (61) in the gripper cavities.

8. A suspension transport vehicle, characterized in that: The invention comprises a vehicle body (5) and a clamp with a self-locking function as claimed in claim 1, wherein a second frame (1) is installed at the bottom of the vehicle body (5), the first frame (2) is longitudinally slidably installed on the second frame (1), and a second driver (11) is provided on the second frame (1), and the second driver (11) is connected to the first frame (2) in a transmission manner for driving the first frame (2) to move up and down on the second driver (11).

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