Grab bucket for loading and unloading equipment

Abstract

The present application provides a grab hopper for loading and unloading equipment, belonging to the technical field of loading and unloading equipment, including: a driving frame, a rotating rod is rotatably connected at both ends of the driving frame, two rotating sleeves are slidably connected inside the driving frame, the two rotating sleeves correspond to the two rotating rods one by one, a first reset spring is arranged between the two rotating sleeves, a sliding groove is provided inside the driving frame, one end of the two rotating sleeves located in the driving frame is connected to a sliding bar matching the sliding groove, one end of the two rotating sleeves is provided with a threaded groove, one end of the rotating rod is penetrated and fixedly connected with a pin extending radially along the rotating rod, and the pin is slidably inserted in the threaded groove; two pairs of grabbing clamps are provided, and the two grabbing clamps of a pair of grabbing clamps correspond to the two rotating rods located on both sides of the fixed frame one by one; a driving mechanism is installed on the fixed frame, and the driving mechanism is used to drive the driving frames on both sides to rotate when the telescopic end of the linear drive is extended and retracted. The present application can improve the stability of wood clamping.

Description

Technical Field

[0001] The present application relates to the technical field of loading and unloading equipment, and in particular to a grab hopper for loading and unloading equipment. Background Art

[0002] Loading and unloading equipment is equipment used to unload materials from containers or vehicles. It is usually used in industrial production, construction sites and ports. Grab hoppers are an important part of loading and unloading equipment. They are used to grab and move materials. Grab hoppers are usually composed of clamps that can be opened and closed. Grab materials when needed and then transport them to the destination. Grab hoppers play an important role in loading and unloading goods and cleaning up construction sites. They can improve work efficiency and reduce labor costs.

[0003] Referring to the Chinese patent application document with announcement number CN220950870U, the subject name is a loading and unloading grab bucket structure for a bridge crane. In the patent, a mounting seat is arranged directly below the fixed frame, and a rotating seat is rotatably connected to the lower surface of the mounting seat. Two symmetrically arranged connecting rods are rotatably connected to both sides of the rotating seat, and a grab clamp is rotatably connected to one end of two connecting rods on both sides of the rotating seat away from the rotating seat. A linear driver is fixedly connected to the lower surface of the rotating seat, and the telescopic end of the linear driver is fixedly connected to the connecting block. Connecting shafts that penetrate the two grab clamps and are rotatably connected to the two grab clamps are fixedly connected to the two sides of the connecting block. The linear driver located on the lower surface of the rotating seat is started, and the telescopic end of the linear driver moves in the vertical direction, which can make the connecting block fixedly connected to the telescopic end move in the vertical direction, pull or push the two grab clamps to move closer to or separate from each other, so as to grab the material.

[0004] Referring to the above technical solution, when the wood is clamped with a clamp, since the wood usually has different diameters at both ends and the distance between the clamps on both sides is the same, the grab will first contact and clamp the end of the wood with a larger diameter when grabbing the wood, while the end of the wood with a smaller diameter is not easy to contact the clamp, which will cause the grab to clamp the wood at different positions to be different, thereby affecting the stability of the wood clamping. Summary of the invention

[0005] In order to solve the technical problem of poor stability in clamping wood, the present application provides a grab bucket for loading and unloading equipment.

[0006] The present application provides a grab bucket for loading and unloading equipment, which adopts the following technical scheme: a grab bucket for loading and unloading equipment, comprising a fixed frame, a grab clamp and a linear drive; a driving frame is provided on both sides of the fixed frame, and both ends of the driving frame are rotatably connected with a rotating rod between the fixed frame, the driving frame is hollow inside and slidably connected with two rotating sleeves, the two rotating sleeves correspond to the two rotating rods one by one, and a first return spring is provided between the two rotating sleeves, a sliding groove extending horizontally is provided inside the driving frame, one end of the two rotating sleeves located in the driving frame is connected with a sliding bar matching the sliding groove, and one end of the two rotating sleeves located in the rotating rod is provided with a threaded groove, and a pin rod extending radially along the rotating rod is penetrated and fixedly connected at one end of the rotating rod close to the driving frame, and the pin rod is slidably inserted in the threaded groove; two pairs of grab clamps are provided, and the two grab clamps of a pair of grab clamps correspond to the two rotating rods located on both sides of the fixed frame one by one; a driving mechanism is installed on the fixed frame, and the driving mechanism is used to drive the driving frames on both sides to rotate when the telescopic end of the linear drive is extended and retracted.

[0007] By adopting the above technical solution, after the clamp clamps the wood, the driving shaft of the linear actuator extends, the driving mechanism drives the driving frame to rotate, the driving frame rotates to drive the rotating sleeve and the rotating rod, the rotating rod rotates to drive the clamp to rotate and clamp the end of the wood with a larger diameter, then the telescopic end of the linear actuator continues to extend, the rotating sleeve close to the clamped end of the wood rotates and moves to the other end, and the first return spring is compressed. Since the diameter of the wood at the other end is relatively small, when the rotating sleeve close to the clamped end of the wood moves, the rotating sleeve and the rotating rod at the other end are still driven by the driving frame to rotate, and then the rotating rod at the other end rotates to clamp the clamp on the other side to the end with a smaller diameter of the wood.

[0008] When the wood needs to be loosened, the telescopic end of the linear actuator is shortened, and the driving mechanism drives the driving frame to rotate in the opposite direction of the initial direction. Under the action of the rotation of the driving frame and the restoring force of the first return spring, the rotating sleeve and the rotating rod return to the initial position.

[0009] In the present application, the rotation of the driving frame can drive the rotating sleeve, the rotating rod and the grab clamp to rotate, and the rotation of the grab clamp can clamp the wood. After the end of the wood with a thicker diameter is clamped, the rotating sleeve at the clamped end moves toward the other end, and the grab clamp at the other end can continue to rotate to clamp the end of the wood with a thinner diameter, thereby reducing the risk of the grab clamp not clamping the end of the wood with a smaller diameter tightly, which is beneficial to improving the stability of clamping the wood.

[0010] Optionally, the driving mechanism includes a push rod hinged on the bottom of the driving frame near the telescopic end of the linear actuator, the other end of the push rod is hinged to the top of the driving frame away from the telescopic end of the linear actuator, and the telescopic end of the linear actuator is hinged to the upper part of the driving frame near the telescopic end of the linear actuator.

[0011] By adopting the above technical solution, when the telescopic end of the linear actuator is extended, the driving frame close to one end of the linear actuator rotates to drive the driving frame on the other side to rotate, and the rotation of the driving frames on both sides drives the grippers on both sides to rotate toward the middle direction of the fixed frame.

[0012] Optionally, a clamping mechanism is provided on the fixing frame, and the clamping mechanism is used to clamp the clamped wood.

[0013] By adopting the above technical solution, the setting of the pressing mechanism can press the wood, and by pressing the wood and cooperating with the clamp to clamp the wood, the risk of the clamp being unable to grip the wood due to the thin wood can be reduced.

[0014] Optionally, the clamping mechanism includes a support seat fixedly connected to the side wall of the fixed frame, a T-shaped rod is slidably connected to the support seat, a second return spring is arranged between the top of the T-shaped rod and the support seat, the second return spring is sleeved on the T-shaped rod, one end of the T-shaped rod passes through the support seat and is fixedly connected to a pressure plate, a pushing assembly is arranged on the fixed frame, and the pushing assembly is used to drive the pressure plate to move downward.

[0015] By adopting the above technical solution, the pushing component can drive the pressure plate and the T-bar to move downward and compress the second return spring. The downward movement of the pressure plate can cooperate with the gripping clamp to press the wood, thereby reducing the risk that the gripping clamp cannot grip the wood due to thin wood.

[0016] Optionally, the pushing assembly includes a rotating plate fixedly mounted on the rotating rod at one end away from the driving frame, the rotating plate is fixedly connected with teeth, a gear is rotatably arranged on the fixed frame, a connecting rod is fixedly connected to the gear, and the connecting rod is slidably connected to the pressure plate at one end away from the gear.

[0017] By adopting the above technical solution, when the clamp does not grip the wood, the driving frame rotates to drive the rotating rod to rotate, the rotating rod rotates to drive the rotating plate to rotate, the rotating plate rotates, the teeth engage with the gear, the gear rotates to push the pressure plate down and make the pressure plate press the wood.

[0018] Optionally, the central angle of the circle corresponding to the teeth on the rotating plate is 90 degrees, and when the gripper rotates toward the middle, the teeth begin to mesh with the gear.

[0019] By adopting the above technical solution, the teeth are set at a central angle of 90 degrees, so that when clamping wood with a larger diameter, the pressure plate will not move down to reduce the space between the clamps. During the rotation process, the pressure plate moves down to clamp wood with a smaller diameter, which is beneficial to increase the clamping range of the wood.

[0020] Optionally, one end of the gripper away from the linear drive is rotatably connected to a roller.

[0021] By adopting the above technical solution, when the gripper is placed between the wood, the setting of the roller and the rotation of the gripper can facilitate the gripper to enter the gap between adjacent woods, thereby reducing the risk of the gripper directly moving downward to damage the wood.

[0022] Optionally, the linear drive is a hydraulic push rod.

[0023] By adopting the above technical solution, the setting of the hydraulic push rod can easily cope with the resistance of the wood and ensure the firmness of the wood clamping.

[0024] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0025] 1. In the present application, the rotation of the driving frame can drive the rotating sleeve, the rotating rod and the grab clamp to rotate, and the rotation of the grab clamp can clamp the wood. After the end of the wood with a thicker diameter is clamped, the rotating sleeve at the clamped end moves to the other end, and the grab clamp at the other end can continue to rotate to clamp the end of the wood with a thinner diameter, thereby reducing the risk of the grab clamp not clamping the end of the wood with a smaller diameter tightly, which is beneficial to improving the stability of clamping the wood.

[0026] 2. The setting of the clamping mechanism can compress the wood. By compressing the wood and cooperating with the clamping of the wood by the gripper, the risk of the gripper being unable to grip the wood due to the thinness of the wood can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0028] Figure 2 This is a schematic diagram of the structure of the rotating sleeve in the embodiment of the present application;

[0029] Figure 3 This is a schematic diagram of the structure of the pin rod in the embodiment of the present application;

[0030] Figure 4 This is a schematic diagram of the structure when the gear begins to mesh with the teeth in the embodiment of the present application;

[0031] Figure 5 It is a schematic diagram of the structure of the gear and tooth meshing process in the embodiment of the present application.

[0032] Explanation of the reference numerals in the accompanying drawings: 1. fixed frame; 11. gripper; 12. linear actuator; 2. drive frame; 21. sliding groove; 22. rotating sleeve; 221. sliding bar; 222. threaded groove; 3. driving mechanism; 31. push rod; 4. rotating rod; 41. pin rod; 5. clamping mechanism; 51. pressure plate; 52. supporting seat; 53. T-bar; 54. second return spring; 55. pushing assembly; 551. rotating plate; 552. teeth; 553. gear; 554. connecting rod; 6. roller. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application. Figure 1-Figure 5 , the technical scheme of the embodiment of the present application is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0034] Reference Figures 1 to 3 A grab hopper for loading and unloading equipment includes a fixed frame 1, a grab clamp 11 and a linear drive 12. A driving frame 2 is arranged on both sides of the fixed frame 1. The driving frame 2 is hollow inside and slidably connected with two rotating sleeves 22. A first reset spring is arranged between the two rotating sleeves 22. A sliding groove 21 is opened in the driving frame 2 along the horizontal direction. One end of the two rotating sleeves 22 located in the driving frame 2 is connected with a sliding bar 221 matching the sliding groove 21. A driving mechanism 3 is arranged on the fixed frame 1. The driving mechanism 3 is used to move the linear drive 12 at the telescopic end. When telescoping, the driving frames 2 on both sides are driven to rotate, and two rotating rods 4 are rotatably connected on both sides of the fixed frame 1. The driving frame 2 is located between the two rotating rods 4, and the rotating sleeves 22 and the rotating rods 4 correspond one to one. Two pairs of grabbing clips 11 are provided, and the two grabbing clips 11 of a pair of grabbing clips 11 correspond one to one to the two rotating rods 4 located on both sides of the fixed frame 1. A threaded groove 222 is provided on the rotating sleeve 22, and a pin rod 41 extending radially along the rotating rod 4 is penetrated and fixedly connected at one end of the rotating rod 4 close to the driving frame 2, and the pin rod 41 is slidably inserted in the threaded groove 222.

[0035] After the gripper 11 clamps the wood, the driving shaft of the linear actuator 12 extends, the driving mechanism 3 drives the driving frame 2 to rotate, the driving frame 2 rotates to drive the rotating sleeve 22 and the rotating rod 4 to rotate, the rotating rod 4 rotates to drive the gripper 11 to rotate and clamp the end of the wood with a larger diameter, then the telescopic end of the linear actuator 12 continues to extend, the rotating sleeve 22 close to the clamped end of the wood rotates and moves to the other end, and the first return spring is compressed. Since the diameter of the wood at the other end is smaller, when the rotating sleeve 22 close to the clamped end of the wood moves, the rotating sleeve 22 and the rotating rod 4 at the other end are still driven by the driving frame 2 to rotate, then the rotating rod 4 at the other end rotates and the gripper 11 on the other side clamps the end of the wood with a smaller diameter.

[0036] When the wood needs to be loosened, the telescopic end of the linear actuator 12 is shortened, and the driving mechanism 3 drives the driving frame 2 to rotate in the opposite direction to the initial direction. Under the action of the rotation of the driving frame 2 and the restoring force of the first return spring, the rotating sleeve 22 and the rotating rod 4 return to the initial position.

[0037] In the present application, the rotation of the driving frame 2 can drive the rotating sleeve 22, the rotating rod 4 and the grabbing clamp 11 to rotate, and the rotation of the grabbing clamp 11 can clamp the wood. After the end of the wood with a thicker diameter is clamped, the rotating sleeve 22 at the clamped end moves toward the other end, and the grabbing clamp 11 at the other end can continue to rotate to clamp the end of the wood with a thinner diameter, thereby reducing the risk of the grabbing clamp 11 not clamping the end of the wood with a smaller diameter tightly, which is beneficial to improving the stability of clamping the wood.

[0038] Reference Figure 4 The driving mechanism 3 includes a push rod 31, which is hinged on the bottom of the driving frame 2 close to the telescopic end of the linear actuator 12, and the other end of the push rod 31 is hinged to the top of the driving frame 2 away from the telescopic end of the linear actuator 12. The telescopic end of the linear actuator 12 is hinged to the upper part of the driving frame 2 close to the telescopic end of the linear actuator 12.

[0039] When the telescopic end of the linear actuator 12 is extended, the driving frame 2 close to one end of the linear actuator 12 rotates to push the driving frame 2 on the other side to rotate, and the driving frames 2 on both sides rotate to drive the grippers 11 on both sides to rotate toward the middle direction of the fixed frame 1.

[0040] Reference Figure 1 A clamping mechanism 5 is provided on the fixing frame 1, and the clamping mechanism 5 is used to clamp the clamped wood.

[0041] The arrangement of the pressing mechanism 5 can press the wood, and by pressing the wood and cooperating with the clamping of the wood by the clamp 11, the risk that the clamp 11 cannot clamp the wood due to the thin wood can be reduced.

[0042] Reference Figure 1 , Figure 4 and Figure 5 The clamping mechanism 5 includes a pressing plate 51, a support seat 52, a T-shaped rod 53, a second return spring 54 and a pushing assembly 55. The pressing plate 51 is arranged on the side of the fixed frame 1 perpendicular to the rotating rod 4. The support seat 52 is fixedly connected to the fixed frame 1. The T-shaped rod 53 is slidably connected to the support seat 52. The T-shaped rod 53 is fixedly connected to the pressing plate 51. The second return spring 54 is arranged between one end of the T-shaped rod 53 away from the pressing plate 51 and the support seat 52. The second return spring 54 is sleeved on the circumference of the T-shaped rod 53. On the side wall, the pushing assembly 55 includes a rotating plate 551, teeth 552, a gear 553 and a connecting rod 554. The rotating plate 551 is fixedly sleeved on the end of the rotating rod 4 away from the rotating sleeve 22. The teeth 552 are fixedly connected to the rotating plate 551. The gear 553 is rotatably set on the fixed frame 1. The connecting rod 554 is fixedly connected to the gear 553. The end of the connecting rod 554 away from the gear 553 is fixedly connected to a sliding rod. A connecting groove for the sliding rod to slide is opened in the horizontal direction on the pressure plate 51.

[0043] When the gripper 11 does not grip the wood, the driving frame 2 rotates to drive the rotating rod 4 to rotate, the rotating rod 4 rotates to drive the rotating plate 551 to rotate, the rotating plate 551 rotates, the teeth 552 engage with the gear 553, the gear 553 rotates to drive the connecting rod 554 to rotate and push the pressing plate 51 downward so that the pressing plate 51 presses the wood.

[0044] Reference Figure 1 and Figure 5 The central angle of the circle corresponding to the teeth 552 on the rotating plate 551 is 90 degrees, and when the gripper 11 rotates toward the middle, the teeth 552 begin to mesh with the gear 553.

[0045] By setting the teeth 552 at a central angle of 90 degrees, when clamping a wood with a larger diameter, the pressure plate 51 will not move down to reduce the space between the clamps 11. During the rotation process, the pressure plate 51 moves down to clamp the wood with a smaller diameter, which is beneficial to increase the clamping range of the wood.

[0046] Reference Figure 3 and Figure 4 One end of the gripper 11 away from the linear drive 12 is rotatably connected to the roller 6.

[0047] When the gripper 11 is placed between the wood, the roller 6 is arranged to cooperate with the rotation of the gripper 11, so that the gripper 11 can easily enter the gap between the adjacent woods, thereby reducing the risk of the gripper 11 directly moving downward to damage the wood.

[0048] The linear drive 12 is a hydraulic push rod.

[0049] The setting of the hydraulic push rod can easily cope with the resistance of the wood and ensure the firmness of the wood clamping.

[0050] The implementation principle of a grab bucket for loading and unloading equipment in the embodiment of the present application is:

[0051] When it is necessary to clamp the wood, first the fixed frame 1 moves down, the roller 6 contacts the wood and rolls along the outline of the wood, the roller 6 rolls and drives the gripper 11 to enter the gap between adjacent woods to clamp the wood, when the gripper 11 rotates, the gripper 11 rotates and drives the rotating rod 4, the rotating rod 4 rotates and drives the rotating sleeve 22 to move toward the end away from the rotating rod 4, and compresses the first return spring, and then the linear actuator 12 is started, the telescopic end of the linear actuator 12 extends and drives the driving frame 2 near one end of the linear actuator 12 to rotate, and the end near the linear actuator 12 The driving frame 2 at one end rotates and pushes the driving frame 2 on the other side to rotate through the push rod 31. The rotation of the driving frame 2 drives the rotating sleeve 22, the rotating rod 4 and the grabbing clamp 11 to rotate. Then, the grabbing clamp 11 that clamps the end of the wood with a larger diameter clamps the wood first. Then, the telescopic end of the linear actuator 12 continues to extend. The driving frame 2 rotates and drives the rotating sleeve 22 that clamps one end of the wood to rotate and move to the other end, and the first return spring continues to be compressed. At the same time, the rotating sleeve 22, the rotating rod 4 and the grabbing clamp 11 at the other end continue to rotate, and then the end of the wood with a smaller diameter is clamped.

[0052] In the process of clamping the wood, the rotation of the rotating rod 4 drives the rotating plate 551 to rotate, and the rotation of the rotating plate 551 drives the teeth 552 to rotate. When the diameter of the wood is thinner, the teeth 552 and the gear 553 begin to mesh and drive the gear 553 to rotate during the rotation of the grabbing clamp 11. The rotation of the gear 553 drives the connecting rod 554 to rotate and pushes the pressing plate 51 to move downward. Then the rotating rod 4 continues to rotate, and the pressing plate 51 and the grabbing clamp 11 cooperate to clamp the wood with a thinner diameter.

[0053] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A grab hopper for loading and unloading equipment, comprising a fixing frame, a grab clamp and a linear drive, characterized in that: A driving frame is provided on both sides of the fixed frame, and a rotating rod is rotatably connected to the fixed frame at both ends of the driving frame, the driving frame is hollow inside and slidably connected with two rotating sleeves, the two rotating sleeves correspond to the two rotating rods one by one, and a first return spring is provided between the two rotating sleeves, a sliding groove extending horizontally is provided inside the driving frame, one end of the two rotating sleeves located in the driving frame is connected with a sliding bar matching the sliding groove, and one end of the two rotating sleeves located in the rotating rod is provided with a threaded groove, and one end of the rotating rod close to the driving frame is penetrated and fixedly connected with a pin rod extending radially along the rotating rod, and the pin rod is slidably inserted in the threaded groove; The gripping clamps are provided in two pairs, and the two gripping clamps of a pair of gripping clamps correspond one to one with the two rotating rods located on both sides of the fixing frame; A driving mechanism is installed on the fixed frame, and the driving mechanism is used to drive the driving frames on both sides to rotate when the telescopic end of the linear actuator is extended or retracted; The fixing frame is provided with a pressing mechanism, and the pressing mechanism is used to press the clamped wood; The clamping mechanism includes a support seat fixedly connected to the side wall of the fixing frame, a T-shaped rod is slidably connected to the support seat, a second return spring is arranged between the top of the T-shaped rod and the support seat, the second return spring is sleeved on the T-shaped rod, one end of the T-shaped rod passing through the support seat is fixedly connected to a pressure plate, and a pushing component is arranged on the fixing frame, and the pushing component is used to drive the pressure plate to move downward; The pushing assembly includes a rotating plate fixedly sleeved on the end of the rotating rod away from the driving frame, the rotating plate is fixedly connected with teeth, a gear is rotatably arranged on the fixed frame, a connecting rod is fixedly connected to the gear, and the end of the connecting rod away from the gear is slidably connected to the pressure plate.

2. A grab bucket for loading and unloading equipment according to claim 1, characterized in that: The driving mechanism includes a push rod hinged on the bottom of the driving frame near the telescopic end of the linear drive, the other end of the push rod is hinged to the top of the driving frame away from the telescopic end of the linear drive, and the telescopic end of the linear drive is hinged to the upper part of the driving frame near the telescopic end of the linear drive.

3. The grab bucket for loading and unloading equipment according to claim 1, characterized in that: The central angle of the circle corresponding to the teeth on the rotating plate is 90 degrees, and when the gripper rotates toward the middle, the teeth begin to mesh with the gear.

4. The grab bucket for loading and unloading equipment according to claim 1, characterized in that: One end of the gripper away from the linear drive is rotatably connected to a roller.

5. The grab bucket for loading and unloading equipment according to claim 1, characterized in that: The linear drive is a hydraulic push rod.

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