Manual gripper

Abstract

A handle is fixedly installed at one end of a connecting rod, a wrench is hinged to the middle of the handle, a main rod is sleeved with the connecting rod, one end of the wrench can drive the main rod to slide in the axial direction, a grabbing piece is arranged at the other end of the connecting rod, the main rod sliding in the axial direction is used for opening and closing the grabbing piece, and a clamping spring is arranged on the periphery of the main rod. The two ends of the clamping spring are fixedly connected to the outer wall of the main rod and the inner wall of the connecting rod respectively, the clamping spring is used for elastic reset of the main rod sliding axially, a plurality of tooth grooves are evenly distributed in one side of the main rod in the axial direction, a pawl is installed on the handle, one end of the pawl can abut against the interior of one tooth groove, and the pawl abutting against the interior of the tooth groove is used for retaining the main rod. According to the hand-operated gripper, the gripping piece always keeps clamping materials through the elastic force of the clamping spring, then the materials are transferred, the structure is simple, one-hand operation can be achieved, the clamping force for gripping the materials can be matched by adjusting the elasticity of the clamping spring, and the application range is wide.

Description

Technical Field

[0001] The utility model belongs to the field of material grippers, in particular to a manual gripper. Background Art

[0002] During experiments and production, when toxic or radioactive materials are grabbed and transported, they need to be grabbed with manual grippers to prevent production safety risks for workers. The manual grippers in existing technology are hinged structures that directly convert the worker's grip force into clamping force for grabbing the material. If the worker's grip force is insufficient or unstable, there is a risk of the material falling. Utility Model Content

[0003] In view of this, the present invention aims to propose a manual gripper to solve the problem that the manual gripper in the prior art achieves the purpose of gripping materials by gripping force, which is relatively laborious and has unstable gripping force and easily causes materials to fall.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0005] A manual gripper comprises a connecting rod, a handle, a wrench, a main rod and a clamping spring. The handle is fixedly installed on one end of the connecting rod, and the middle part of the handle is hinged to the wrench. The main rod is sleeved in the connecting rod. One end of the wrench can drive the main rod to slide axially. A grabbing piece is provided at the other end of the connecting rod. The axially sliding main rod is used for opening and closing the grabbing piece, and a clamping spring is provided on the periphery of the main rod. The two ends of the clamping spring are respectively fixedly connected to the outer wall of the main rod and the inner wall of the connecting rod. The clamping spring is used for elastic reset of the axially sliding main rod. A plurality of tooth grooves are evenly distributed along the axial direction on one side of the main rod. A ratchet is installed on the handle. One end of the ratchet can abut against a tooth groove. The ratchet abutting against the tooth groove is used to stop the main rod from retreating.

[0006] Furthermore, one end of the pawl is rotatably connected to the handle, and the other end of the pawl can abut against the tooth groove, and a lever is provided on the first side of the pawl, and a first spring is provided on the second side of the pawl, one end of the first spring is fixedly connected to the handle, and a baffle is provided on the handle, and the first side of the pawl can abut against one side of the baffle.

[0007] Furthermore, the cross section of the pawl is an L-shaped structure, and the periphery of the main rod is located within the L-shaped structure.

[0008] Furthermore, an abutment plate is installed on the handle, and a first through hole is provided in the middle of the abutment plate. The outer periphery of the main rod is located in the first through hole. The first through hole does not interfere with the axial displacement of the main rod. One end of the first spring is fixedly connected to one end of the abutment plate, and a pushing card is provided at the other end of the abutment plate, and a second through hole is provided in the middle of the pushing card, and the outer periphery of the main rod is located in the second through hole. A reset spring is provided on the outer periphery of the main rod, and both ends of the reset spring are respectively fixedly connected to one end of the pushing card and the inner ring of the connecting rod.

[0009] Furthermore, a first gap is provided between the inner ring of the pushing card plate and the outer periphery of the main rod, a second gap is provided between the outer periphery of the pushing card plate and the inner ring of the connecting rod, and the pushing card plate, the main rod and the connecting rod are all concentrically arranged. The horizontally arranged pushing card plate does not interfere with the axial displacement of the main rod, and the inclined inner ring of the pushing card plate can be clamped into the tooth groove, and the outer periphery of the card plate never contacts the inner ring of the connecting rod.

[0010] Furthermore, an extrusion plate is provided on one side of the pushing card plate, and a first pressing shaft is provided at one end of the wrench. The outer periphery of the first pressing shaft abuts against one side of the extrusion plate. The wrench drives the extrusion plate and the pushing card plate to move in sequence through the first pressing shaft. The inner ring of the displaced pushing card plate can be clamped into the tooth groove to drive the main rod to move axially.

[0011] Furthermore, the cross section of the extrusion plate is an arc-shaped structure, and the first pressing axis is located in the arc-shaped structure.

[0012] Furthermore, the grabbing member includes two grabbing plates, and the two grabbing plates are arranged opposite to each other. A mounting seat is provided at one end of the connecting rod, and the middle part of each grabbing plate is rotatably connected to the mounting seat. An elliptical long hole is provided at one end of the grabbing plate, and a second pressing shaft is provided at one end of the main rod. The outer periphery of the second pressing shaft is respectively located in the two elliptical long holes.

[0013] Furthermore, an arc-shaped groove is provided on one side of the grab plate, and an anti-slip boss is provided in the arc-shaped groove.

[0014] Furthermore, the connecting rod includes a first tube body and a second tube body, one end of the second tube body is detachably connected to one end of the first tube body, the other end of the first tube body is provided with a handle, and the other end of the second tube body is detachably installed with a mounting seat, the main rod includes a first rod body and a second rod body, one end of the first rod body is detachably connected to one end of the second rod body, the other end of the second rod body is provided with a second pressing shaft, and the other end of the first rod body is provided with a handle, and the first rod body is located in the first tube body, and the second tube body is located in the second tube body, a first clamping platform is provided on the periphery of the first rod body, a second clamping platform is provided on the inner ring of the first tube body, and a clamping spring is provided on the periphery of the first rod body, and both ends of the clamping spring are respectively fixedly connected to one end of the first clamping platform and one end of the second clamping platform.

[0015] Compared with the prior art, the manual gripper described in the present invention has the following beneficial effects:

[0016] (1) The manual gripper described in the present invention is in a normally closed state when in use. When it is necessary to grab materials, the gripper is driven to open by axial sliding of the handle. During the opening process, the end of the pawl is clamped into a tooth groove to place the main rod back. After confirming that the material is within the range of the gripper, the pawl is disengaged from the tooth groove, and the main rod is driven back by the elastic force of the clamping spring, so that the gripper always keeps clamping the material, and then the material is transferred. The manual gripper has a simple structure and can be operated with one hand. The clamping force of the material can be adapted by adjusting the elasticity of the clamping spring, and has a wide range of applications.

[0017] (2) The manual gripper described in the present invention has an L-shaped cross-section in order to save installation space in the handle. The outer periphery of the main rod is located in the L-shaped structure. The long side end of the L-shaped structure is rotatably connected to the handle. The inner side of the short side of the L-shaped structure can abut against the tooth groove. The two ends of the short side of the L-shaped structure are respectively connected to the first spring and abut against the baffle.

[0018] (3) The manual gripper described in the present invention has an arc-shaped cross-section of the extrusion plate, and the first pressing shaft is located within the arc-shaped structure. The plate-moving wrench can cause the first pressing shaft to move in an arc-shaped trajectory. The arc-shaped structure of the extrusion plate is used to adapt to the arc-shaped trajectory to prevent the first pressing shaft from being out of contact with the extrusion plate, thereby ensuring that the relative position of the wrench is controllable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 This is a structural diagram of a manual gripper according to an embodiment of the present utility model;

[0021] Figure 2 This is a cross-sectional schematic diagram of a manual gripper according to an embodiment of the present utility model;

[0022] Figure 3 Based Figure 2 A partial enlarged view of middle A;

[0023] Figure 4 This is a structural diagram of the main rod according to an embodiment of the present utility model;

[0024] Figure 5 This is a schematic structural diagram of the main rod and the grabbing member according to an embodiment of the present utility model;

[0025] Figure 6 This is a structural schematic diagram of the grab plate described in an embodiment of the utility model.

[0026] Description of reference numerals:

[0027] 1-handle; 11-baffle; 12-abutment plate; 2-wrench; 21-first pressing shaft; 3-connecting rod; 31-mounting seat; 32-first tube body; 33-second tube body; 4-main rod; 41-tooth groove; 42-second pressing shaft; 43-first rod body; 44-second rod body; 45-handle; 5-grabbing part; 51-grabbing plate; 52-elliptical long hole; 53-anti-slip boss; 6-clamping spring; 7-ratchet; 71-shift lever; 72-first spring; 8-pushing card plate; 81-reset spring; 82-extrusion plate. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0030] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0031] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0032] like Figures 1-6A manual gripper comprises a connecting rod 3, a handle 1, a wrench 2, a main rod 4 and a clamping spring 6. The handle 1 is fixedly installed on one end of the connecting rod 3, and the wrench 2 is hinged to the middle part of the handle 1. The main rod 4 is sleeved in the connecting rod 3. One end of the wrench 2 can drive the main rod 4 to slide axially. A grab piece is provided at the other end of the connecting rod 3. The axially sliding main rod 4 is used for opening and closing the grab piece, and a clamping spring 6 is provided on the periphery of the main rod 4. The two ends of the clamping spring 6 are respectively fixedly connected to the outer wall of the main rod 4 and the inner wall of the connecting rod 3. The clamping spring 6 is used for elastic reset of the axially sliding main rod 4. A plurality of tooth grooves 41 are evenly distributed axially on one side of the main rod 4. A pawl 7 is installed on the handle 1. One end of the pawl 7 can abut against a tooth groove 41. The pawl 7 abutting against the tooth groove 41 is used to prevent the main rod 4 from retreating, thereby realizing the grabbing of materials. When in use, the grabbing part is in a normally closed state. When it is necessary to grab materials, the grabbing part is driven to open by axial sliding of the handle 1. During the opening process, the end of the pawl 7 is clamped into a tooth groove 41 to place the main rod 4 back. After confirming that the material is within the range of the grabbing part, the contact between the pawl 7 and the tooth groove 41 is disengaged, and the main rod 4 is driven to retreat by the elastic force of the clamping spring 6, so that the grabbing part always keeps clamping the material, and then the material is transported. The manual gripper 5 has a simple structure and can be operated with one hand. The clamping force of the material can be adapted by adjusting the elasticity of the clamping spring 6, and it has a wide range of applications.

[0033] One end of the pawl 7 is rotatably connected to the handle 1, and the other end of the pawl 7 can abut against the tooth groove 41, and the tooth groove 41 is an oblique groove. A shift rod 71 is provided on the first side of the pawl 7, and a first spring 72 is provided on the second side of the pawl 7. One end of the first spring 72 is fixedly connected to the handle 1, and a baffle 11 is provided on the handle 1. The first side of the pawl 7 can abut against one side of the baffle 11. The first spring 72 is used for the elastic reset of the pawl 7. When the main rod 4 slides axially in the positive direction, the grasping member gradually opens, and the pawl 7 does not interfere with the positive sliding of the main rod 4. When the main rod 4 slides axially in the reverse direction, the grasping member gradually closes, and the end of the pawl 7 abuts against the tooth groove 41, interfering with the sliding of the main rod 4. The pawl 7 can be disengaged from the tooth groove 41 by pressing the shift rod 71, thereby achieving the purpose of controlling the grasping member from opening to closing.

[0034] In order to save installation space inside the handle 1, the cross-section of the pawl 7 is an L-shaped structure during implementation. The outer periphery of the main rod 4 is located inside the L-shaped structure. The long side end of the L-shaped structure is rotatably connected to the handle 1, and the inner side of the short side of the L-shaped structure can abut against the tooth groove 41. The two ends of the short side of the L-shaped structure are respectively connected to the first spring 72 and abut against the baffle 11.

[0035] The handle 1 is provided with an abutment plate 12, and a first through hole is provided in the middle of the abutment plate 12. The outer periphery of the main rod 4 is located in the first through hole. The first through hole does not interfere with the axial displacement of the main rod 4. One end of the first spring 72 is fixedly connected to one end of the abutment plate 12, and the other end of the abutment plate 12 is provided with a pushing card plate 8, and a second through hole is provided in the middle of the pushing card plate 8, the outer periphery of the main rod 4 is located in the second through hole. A return spring 81 is provided on the outer periphery of the main rod 4, and both ends of the return spring 81 are respectively fixedly connected to one end of the pushing card plate 8 and the inner ring of the connecting rod 3. A first gap is provided between the inner ring of the pushing card plate 8 and the outer periphery of the main rod 4, and a second gap is provided between the outer periphery of the pushing card plate 8 and the inner ring of the connecting rod 3, and the pushing card plate 8, the main rod 4 and the connecting rod 3 are all concentrically arranged. The horizontally arranged pushing card plate 8 does not interfere with the axial displacement of the main rod 4, and the inner ring of the inclined pushing card plate 8 can be clamped into the tooth groove 41, and the outer periphery of the card plate never contacts the inner ring of the connecting rod 3. Figure 2 When the wrench 2 is no longer squeezed and pushed, the clamping plate 8 is pushed back by the reset spring 81 and reset to abut against the abutment plate 12, and the clamping spring 6 is compressed, but the end of the pawl 7 abuts against the tooth groove 41, so that the main rod 4 cannot move and the catch is opened. As the staff repeatedly moves the wrench 2, the opening of the catch gradually increases, and the adjustment of the opening of the catch has been realized to adapt to different working conditions. Under working conditions requiring large clamping force, the staff can compress the clamping spring 8 by repeatedly moving the wrench 2, and the wrench 2 slides the main rod 4 through the lever principle, which is more labor-saving and easy to operate.

[0036] An extrusion plate 82 is provided on one side of the pushing card plate 8, and a first pressing shaft 21 is provided at one end of the wrench 2. The outer periphery of the first pressing shaft 21 abuts against one side of the extrusion plate 82. The wrench 2 drives the extrusion plate 82 and the pushing card plate 8 to move in sequence through the first pressing shaft 21. The displaced pushing card plate 8 can drive the main rod 4 to axially move after being clamped to the tooth groove 41. The cross section of the extrusion plate 82 is an arc structure. The first pressing shaft 21 is located in the arc structure. The plate-moving wrench 2 can make the first pressing shaft 21 move in an arc trajectory. The arc structure of the extrusion plate 82 is used to adapt to the arc trajectory to prevent the first pressing shaft 21 from being out of contact with the extrusion plate 82, thereby ensuring that the relative position of the wrench 2 is controllable.

[0037] like Figure 5 and Figure 6As shown, the grabbing member includes two grabbing plates 51, and the two grabbing plates 51 are arranged opposite to each other. A mounting seat 31 is provided at one end of the connecting rod 3, and the middle part of each grabbing plate 51 is rotatably connected to the mounting seat 31. An elliptical long hole 52 is provided at one end of the grabbing plate 51, and a second pressing shaft 42 is provided at one end of the main rod 4. The outer periphery of the second pressing shaft 42 is respectively located in the two said elliptical long holes 52. An arc groove is provided on one side of the grabbing plate 51, and an anti-slip boss 53 is provided in the arc groove to increase the friction of the grabbed material.

[0038] The connecting rod 3 includes a first tube body 32 and a second tube body 33, one end of the second tube body 33 is detachably connected to one end of the first tube body 32, the other end of the first tube body 32 is provided with a handle 1, and the other end of the second tube body 33 is detachably installed with a mounting seat 31. The main rod 4 includes a first rod body 43 and a second rod body 44, one end of the first rod body 43 is detachably connected to one end of the second rod body 44, the other end of the second rod body 44 is provided with a second pressing shaft 42, and the other end of the first rod body 43 is provided with a handle 45, and the first rod body 43 is located in the first tube body 32, and the second tube body 33 is located in the second tube body 33. A first clamping platform is provided on the periphery of the first rod body 43, and a second clamping platform is provided on the inner circle of the first tube body 32. A clamping spring 6 is provided on the periphery of the first rod body 43, and both ends of the clamping spring 6 are respectively fixedly connected to one end of the first clamping platform and one end of the second clamping platform. The connecting rod 3 and the main rod 4 are made into a split structure, which is convenient for disassembly and maintenance of the device.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A manual gripper, characterized in that: The invention comprises a connecting rod (3), a handle (1), a wrench (2), a main rod (4) and a clamping spring (6); one end of the connecting rod (3) is fixedly mounted with the handle (1), and the middle part of the handle (1) is hinged with the wrench (2); the main rod (4) is sleeved inside the connecting rod (3); one end of the wrench (2) can drive the main rod (4) to slide axially; the other end of the connecting rod (3) is provided with a grabbing piece (5); the axially sliding main rod (4) is used for opening and closing the grabbing piece (5), and the outer periphery of the main rod (4) is provided with a clamping piece (6); A clamping spring (6) is provided, and both ends of the clamping spring (6) are fixedly connected to the outer wall of the main rod (4) and the inner wall of the connecting rod (3), respectively. The clamping spring (6) is used for elastically resetting the main rod (4) that slides axially. A plurality of tooth grooves (41) are evenly distributed along the axial direction on one side of the main rod (4). A ratchet (7) is installed on the handle (1), and one end of the ratchet (7) can abut against a tooth groove (41). The ratchet (7) abutting against the tooth groove (41) is used for preventing the main rod (4) from retreating.

2. A manual gripper according to claim 1, characterized in that: One end of the pawl (7) is rotatably connected to the handle (1), and the other end of the pawl (7) can abut against the tooth groove (41). A shift rod (71) is provided on a first side of the pawl (7), and a first spring (72) is provided on a second side of the pawl (7). One end of the first spring (72) is fixedly connected to the handle (1), and a baffle (11) is provided on the handle (1). The first side of the pawl (7) can abut against one side of the baffle (11).

3. A manual gripper according to claim 2, characterized in that: The cross section of the pawl (7) is an L-shaped structure, and the periphery of the main rod (4) is located within the L-shaped structure.

4. The manual gripper according to claim 1, characterized in that: An abutment plate (12) is installed on the handle (1), a first through hole is provided in the middle of the abutment plate (12), the periphery of the main rod (4) is located in the first through hole, the first through hole does not interfere with the axial displacement of the main rod (4), one end of the first spring (72) is fixedly connected to one end of the abutment plate (12), the other end of the abutment plate (12) is provided with a pushing card (8), and a second through hole is provided in the middle of the pushing card (8), the periphery of the main rod (4) is located in the second through hole, a return spring (81) is provided on the periphery of the main rod (4), and the two ends of the return spring (81) are respectively fixedly connected to one end of the pushing card (8) and the inner ring of the connecting rod (3).

5. A manual gripper according to claim 4, characterized in that: A first gap is provided between the inner ring of the pushing card plate (8) and the outer periphery of the main rod (4), a second gap is provided between the outer periphery of the pushing card plate (8) and the inner ring of the connecting rod (3), and the pushing card plate (8), the main rod (4) and the connecting rod (3) are all concentrically arranged. The horizontally arranged pushing card plate (8) does not interfere with the axial displacement of the main rod (4), the inner ring of the inclined pushing card plate (8) can be clamped into the tooth groove (41), and the outer periphery of the card plate never contacts the inner ring of the connecting rod (3).

6. A manual gripper according to claim 5, characterized in that: An extrusion plate (82) is provided on one side of the push card plate (8), and a first pressing shaft (21) is provided on one end of the wrench (2). The outer periphery of the first pressing shaft (21) abuts against one side of the extrusion plate (82). The wrench (2) drives the extrusion plate (82) and the push card plate (8) to move in sequence through the first pressing shaft (21). The inner ring of the displaced push card plate (8) can be clamped to the tooth groove (41) and then drive the main rod (4) to move axially.

7. The manual gripper according to claim 6, characterized in that: The cross section of the extrusion plate (82) is an arc-shaped structure, and the first pressing shaft (21) is located in the arc-shaped structure.

8. The manual gripper according to claim 1, characterized in that: The grabbing member (5) includes two grabbing plates (51), and the two grabbing plates (51) are arranged opposite to each other. A mounting seat (31) is provided at one end of the connecting rod (3), and the middle part of each grabbing plate (51) is rotatably connected to the mounting seat (31). An elliptical long hole (52) is provided at one end of the grabbing plate (51), and a second pressing shaft (42) is provided at one end of the main rod (4), and the outer periphery of the second pressing shaft (42) is respectively located in the two elliptical long holes (52).

9. The manual gripper according to claim 8, characterized in that: An arcuate groove is provided on one side of the gripping plate (51), and an anti-slip boss (53) is provided in the arcuate groove.

10. The manual gripper according to claim 8, characterized in that: The connecting rod (3) includes a first tube body (32) and a second tube body (33), one end of the second tube body (33) is detachably connected to one end of the first tube body (32), the other end of the first tube body (32) is provided with a handle (1), and the other end of the second tube body (33) is detachably mounted on a mounting seat (31), and the main rod (4) includes a first rod body (43) and a second rod body (44), one end of the first rod body (43) is detachably connected to one end of the second rod body (44), and the other end of the second rod body (44) is detachably mounted on a mounting seat (31). A second pressing shaft (42) is provided at one end, a handle (45) is provided at the other end of the first rod body (43), and the first rod body (43) is located in the first tube body (32), and the second tube body (33) is located in the second tube body (33), a first clamping platform is provided on the periphery of the first rod body (43), a second clamping platform is provided on the inner circle of the first tube body (32), and a clamping spring (6) is provided on the periphery of the first rod body (43), and both ends of the clamping spring (6) are fixedly connected to one end of the first clamping platform and one end of the second clamping platform respectively.

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