Clamping mechanism suitable for columnar materials

Abstract

The utility model relates to the technical field of pipe transportation, and discloses a clamping mechanism suitable for columnar materials, which comprises a frame, a lead screw is rotatably mounted in the frame, two clamping jaws capable of being opened and closed oppositely are sleeved on the lead screw, and hook plates for supporting products are mounted on the lower portions of the clamping jaws. Wherein at least one clamping jaw is connected with the lead screw in a screwed mode, and a supporting and guiding assembly used for supporting and guiding the clamping jaws is further arranged in the frame. The distance between the two hook plates can be smaller than the diameter of a columnar material through relative movement between the two clamping jaws, then the outer side circumferential face of the columnar material is clamped through the side walls of the clamping jaws, clamping and positioning of the columnar material are finally achieved, and by controlling the relative distance between the two clamping jaws, clamping and positioning of the columnar material are achieved. Materials with different diameters can be clamped, and the material conveying efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe transportation, in particular to a clamping mechanism suitable for columnar materials. Background Art

[0002] In the processing of shaft workpieces, the blanks need to be transferred to the workstation to be processed first. In the transportation of pipes or round bars, the existing technology usually uses binding straps, clips or bracket supports to fix and clamp them before transportation.

[0003] However, the existing fixed clamping method not only has low transportation efficiency and cannot adapt to materials of various diameter specifications, but is also not convenient for modular assembly. Therefore, it is urgent to design a clamping mechanism to overcome the defects of the existing technology for transporting columnar blanks. Utility Model Content

[0004] The problem to be solved by the utility model is to provide a clamping mechanism suitable for columnar materials, which converts the rotational motion of the screw rod into the linear motion of the clamping jaws, so that the two clamping jaws can open and close relatively to clamp the columnar materials; the mechanism can adapt to materials of various diameters, is convenient for modular assembly, and can improve the efficiency of material transportation.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A clamping mechanism suitable for columnar materials, comprising a frame, a screw rod rotatably mounted inside the frame, two clamping jaws capable of opening and closing relative to each other sleeved on the screw rod, the lower part of the clamping jaw extending to the outside of the frame, and a hook plate for supporting the product mounted on the lower part of the clamping jaw;

[0007] Wherein, at least one of the clamping jaws is screwed and connected to the screw rod, and a support and guide assembly for supporting and guiding the clamping jaw is also arranged inside the frame.

[0008] Optionally, the support guide assembly includes a plurality of guide shafts fixedly mounted on the inner side of the frame, the guide shafts are parallel to the screw rods, and the guide shafts are passed through the upper portion of the clamping jaws.

[0009] Optionally, four guide shafts are provided, and the four guide shafts are grouped in pairs and symmetrically distributed on both sides of the screw rod.

[0010] Optionally, the screw rod is screwed to one of the clamping jaws via a nut, and the other clamping jaw is fixedly mounted on the guide shaft.

[0011] Optionally, a bushing is fixedly mounted on the clamping jaw screwed together with the screw rod, and the bushing is slidably sleeved on the guide shaft.

[0012] Optionally, a shoulder is provided on the guide shaft, a sleeve abutting against an inner wall of the frame is provided on one side of the shoulder, and a clamp fixedly connected to the guide shaft is located between the shoulder and the sleeve.

[0013] Optionally, the screw rod and the two clamping jaws are screwed together via a nut, and the two clamping jaws are slidably connected to the guide shaft.

[0014] Optionally, a pad is fixedly installed on the inner side of the clamping jaw, the pad is located above the hook plate, and a V-shaped groove is provided on a side of the pad close to the product.

[0015] Optionally, one end of the screw rod passes through the frame and is fixedly connected to the handwheel.

[0016] Optionally, the frame is provided with lifting holes on both sides adjacent to the hand wheel.

[0017] Beneficial Effects

[0018] (1) The screw in the utility model can drive the clamping jaws to move in a straight line. Through the relative movement between the two clamping jaws, the distance between the two hook plates can be made smaller than the diameter of the columnar material. The side walls of the clamping jaws are then used to clamp the outer circumferential surface of the columnar material, thereby finally clamping and positioning the columnar material. In addition, the mechanism can clamp materials of different diameters by controlling the relative distance between the two clamping jaws, thereby improving the efficiency of material transportation.

[0019] (2) In the present invention, the pad on the clamping jaw can improve the stability of the material clamping, and the V-shaped groove opened thereon can also limit the freedom of the material to ensure that it will not accidentally fall during the handling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a schematic diagram of the internal structure of the framework of the utility model;

[0022] Figure 3 It is a main structural schematic diagram of the utility model;

[0023] Figure 4 It is a schematic diagram of the top view structure of the utility model;

[0024] Figure 5 yes Figure 4 Schematic diagram of the cross-sectional structure of the AA section;

[0025] Figure 6 yes Figure 4Schematic diagram of the cross-sectional structure of the CC section;

[0026] Among them, 1. frame; 11. lifting hole; 2. clamping claw; 21. hook plate; 3. screw rod; 4. nut; 5. guide shaft; 51. sleeve; 6. bushing; 7. spacer; 8. handwheel; 9. product. DETAILED DESCRIPTION

[0027] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0028] Embodiment 1

[0029] like Figure 1-Figure 4 As shown, a clamping mechanism suitable for columnar materials includes a frame 1, a screw rod 3 is rotatably installed inside the frame 1, two clamping jaws 2 that can open and close relative to each other are sleeved on the screw rod 3, the lower part of the clamping jaw 2 extends to the outside of the frame 1, a hook plate 21 for supporting the product 9 is installed at the lower part of the clamping jaw 2, and a supporting and guiding assembly for supporting and guiding the clamping jaw 2 is also arranged inside the frame 1.

[0030] As mentioned above, the product 9 here is a columnar material, and the frame 1 is formed by four panels connected end to end in sequence, that is, the upper and lower ends of the frame 1 are open ends, and the front, back, left and right sides are all closed sides; by driving the screw rod 3 to rotate, the clamping jaws 2 can be driven to move along the axial direction of the screw rod 3 in the frame 1, so that the two clamping jaws 2 can be relatively opened and closed to clamp the columnar material; and after clamping, the distance between the two hook plates 21 is smaller than the diameter of the material, so as to support the material and prevent it from falling during transportation, thereby preventing the occurrence of safety hazards.

[0031] Through the relative movement between the two clamping jaws 2, the distance between the two hook plates 21 can be made smaller than the diameter of the columnar material, and then the side walls of the clamping jaws 2 are used to clamp the outer circumferential surface of the columnar material, thereby finally achieving the clamping and positioning of the columnar material. This mechanism can clamp materials of different diameters by controlling the relative distance between the two clamping jaws 2. The operation is simple and fast, and the efficiency of material transportation can be improved.

[0032] The rotation of the screw rod 3 can be driven and controlled by a servo motor, or manually controlled by a handwheel 8, that is, one end of the screw rod 3 passes through the frame 1 and is fixedly connected to the handwheel 8, and the screw rod 3 can be driven to rotate synchronously by turning the handwheel 8.

[0033] In order to facilitate the transportation of the mechanism, lifting holes 11 are opened on both sides of the frame 1 adjacent to the hand wheel 8. An external transportation device (such as a crane, etc.) can be connected to the mechanism through the lifting holes 11 to drive the mechanism to move to a specified position, clamp the material, and then move it to the loading position.

[0034] Furthermore, a cushion block 7 is fixedly installed on the inner side of the clamping jaw 2 . The cushion block 7 is located above the hook plate 21 , and a V-shaped groove is formed on a side of the cushion block 7 close to the product 9 .

[0035] One side of the pad 7 protrudes from the inner wall of the clamping jaw 2. The pad 7 on the clamping jaw 2 can improve the stability of material clamping, and the V-shaped groove on it can also limit the freedom of the product 9 to ensure that it will not accidentally fall during transportation. In addition, a mounting hole can be provided on the pad 7 for installing a displacement sensor or a pressure sensor to detect the clamping force and clamping distance of the clamping jaw 2 on the product 9, which is convenient for the staff to operate.

[0036] The support guide assembly includes a plurality of guide shafts 5 fixedly mounted on the inner side of the frame 1, the guide shafts 5 are parallel to the screw rod 3, and the guide shafts 5 are arranged through the upper part of the clamping jaw 2. Under the support and limitation of the guide shafts 5, the clamping jaw 2 can only move along the axial direction of the guide shafts 5. At the same time, due to the support of the guide shafts 5, the radial load of the clamping jaw 2 on the screw rod 3 can be shared, so that the screw rod 3 can drive it more labor-saving and extend the service life of the screw rod 3.

[0037] As mentioned above, four guide shafts 5 are provided, and the four guide shafts 5 are arranged in groups of two and symmetrically distributed on both sides of the screw rod 3. Since the clamping jaw 2 is relatively long, its lower part needs to extend to the outside of the frame 1, so it is limited and supported by four guide shafts 5, which can make the opening and closing movement of the clamping jaw 2 more stable.

[0038] The screw rod 3 and the two clamping jaws 2 are screwed together by nuts 4, and the two clamping jaws 2 are slidably connected to the guide shaft 5 by bushings 6. The bushings 6 can reduce the friction and wear between the clamping jaws 2 and the guide shaft 5, and extend the service life of related components.

[0039] The nut 4 is fixedly mounted on the clamping jaw 2 and is screwed onto the screw rod 3. Since the two clamping jaws 2 need to realize relative opening and closing movement, the two nuts 4 have opposite rotation directions, and the screw rod 3 has two sections of threads with opposite rotation directions to cooperate with the two nuts 4 to realize screwing. That is, when the screw rod 3 rotates, it can drive the two nuts 4 to move in opposite directions or back and forth synchronously to realize the opening and closing function of the two clamping jaws 2.

[0040] Embodiment 2

[0041] On the basis of embodiment one, the utility model also proposes an opening and closing method and structure of two jaws 2, that is, one of the jaws 2 is screwed and connected to the screw rod 3, and the other jaw 2 is fixed on the guide shaft 5, and the screw rod 3 does not screw and contact with it, that is, the rotation of the screw rod 3 does not affect the movement state of the jaw 2.

[0042] like Figure 1 , Figure 5-Figure 6 As shown, one of the clamping jaws 2 is screwed and connected to the screw rod 3 through a nut 4, and the other clamping jaw 2 is fixedly mounted on the guide shaft 5. A bushing 6 is fixedly mounted on the clamping jaw 2 screwed and connected to the screw rod 3, and the bushing 6 is slidably sleeved on the guide shaft 5. A shaft shoulder is provided on the guide shaft 5, and a shaft sleeve 51 is provided on one side of the shaft shoulder to abut against the inner wall of the frame 1, and the clamping jaw 2 fixedly connected to the guide shaft 5 is located between the shaft shoulder and the shaft sleeve 51.

[0043] For the clamping jaw 2 that can slide on the guide shaft 5, it is slidably connected to the guide shaft 5 through the bushing 6 to reduce friction and wear; for the clamping jaw 2 that is fixedly mounted on the guide shaft 5, it is axially positioned through the shaft sleeve 51 and the shaft shoulder of the guide shaft 5 to complete the fixation. This structure can not only fix the clamping jaw 2, but also facilitate disassembly and assembly, and facilitate later maintenance and replacement.

[0044] In summary, the mechanism is hoisted near the material through the hoisting hole 11 on the frame 1, and the hand wheel 8 is turned to drive the screw 3 to rotate, so as to drive the clamping jaws 2 to open and close relatively, and the pad 7 is used to clamp the material, thereby reducing the consumption of manpower and improving the material transportation efficiency. The purpose of the utility model is to improve the efficiency of material transportation, so that it can adapt to materials of various diameters, facilitate modular assembly, and the simultaneous use of multiple clamping mechanisms can increase the weight of the load material and expand the length range of the clamped material.

[0045] In the description of the present utility model, 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 positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 a limitation on the present utility model. 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 technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0047] The above is based on the ideal embodiment of the utility model. Through the above description, relevant personnel can make various changes and modifications without deviating from the technical concept of the utility model. The technical scope of this utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A clamping mechanism suitable for columnar materials, characterized in that: It comprises a frame (1), a screw rod (3) is rotatably mounted inside the frame (1), two clamping jaws (2) which can be opened and closed relative to each other are sleeved on the screw rod (3), the lower part of the clamping jaws (2) extends to the outside of the frame (1), and a hook plate (21) for supporting a product (9) is mounted on the lower part of the clamping jaws (2); At least one of the clamping jaws (2) is screwed together with the screw rod (3), and a support and guide component for supporting and guiding the clamping jaw (2) is also provided inside the frame (1).

2. The clamping mechanism for columnar materials according to claim 1, characterized in that: The support guide assembly comprises a plurality of guide shafts (5) fixedly mounted on the inner side of the frame (1), the guide shafts (5) being parallel to the screw rod (3), and the guide shafts (5) being passed through the upper part of the clamping jaw (2).

3. The clamping mechanism for columnar materials according to claim 2, characterized in that: Four guide shafts (5) are provided, and the four guide shafts (5) are arranged in groups of two and are symmetrically distributed on both sides of the screw rod (3).

4. The clamping mechanism for columnar materials according to claim 3, characterized in that: The screw rod (3) is screwed together with one of the clamping jaws (2) via a nut (4), and the other clamping jaw (2) is fixedly mounted on the guide shaft (5).

5. The clamping mechanism for columnar materials according to claim 4, characterized in that: A bushing (6) is fixedly mounted on the clamping jaw (2) which is screwed together with the screw rod (3), and the bushing (6) is slidably sleeved on the guide shaft (5).

6. The clamping mechanism for columnar materials according to claim 5, characterized in that: The guide shaft (5) is provided with a shaft shoulder, a shaft sleeve (51) abutting against the inner wall of the frame (1) is provided on one side of the shaft shoulder, and a clamping jaw (2) fixedly connected to the guide shaft (5) is located between the shaft shoulder and the shaft sleeve (51).

7. The clamping mechanism for columnar materials according to claim 3, characterized in that: The screw rod (3) and the two clamping jaws (2) are screwed together via nuts (4), and the two clamping jaws (2) and the guide shaft (5) are slidably connected.

8. The clamping mechanism for columnar materials according to any one of claims 1 to 7, characterized in that: A cushion block (7) is fixedly mounted on the inner side of the clamping jaw (2), the cushion block (7) is located above the hook plate (21), and a V-shaped groove is provided on a side of the cushion block (7) close to the product (9).

9. The clamping mechanism for columnar materials according to claim 8, characterized in that: One end of the screw rod (3) passes through the frame (1) and is fixedly connected to the hand wheel (8).

10. The clamping mechanism for columnar materials according to claim 9, characterized in that: The frame (1) is provided with lifting holes (11) on both sides adjacent to the hand wheel (8).

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