Connecting rod clamping device for narrow space

Abstract

The utility model relates to a connecting rod clamping device for a narrow space, which comprises a first clamping rod and a second clamping rod, the first clamping rod and the second clamping rod respectively comprise a handle, a rotating shaft connecting part and a clamping head which are connected in sequence to form a Z-shaped structure, the first clamping rod and the second clamping rod are respectively connected with the corresponding rotating shaft connecting part through a rotating shaft, and the clamping head is connected with the rotating shaft connecting part through a rotating shaft. The rotating shaft is located at the ends, close to the clamping head, of the first clamping rod and the second clamping rod. Clamping heads of the first clamping rod and the second clamping rod are both of a semi-cylindrical structure, a semi-cylindrical groove is formed in the plane side of each semi-cylindrical structure, the curved face side of each semi-cylindrical structure is connected with a rotating shaft connecting part through a straight rod, and the clamping heads of the first clamping rod and the second clamping rod are opposite in position. And the semi-cylindrical grooves of the clamping heads of the first clamping rod and the second clamping rod are matched with each other to form a clamping cavity matched with a connecting rod to be clamped. Compared with the prior art, the utility model has the advantages that the clamping force and the stability are improved, the use is more stable and reliable, and the like.

Description

Technical Field

[0001] This utility model relates to the field of clamping devices, and in particular to a connecting rod clamping device for use in narrow spaces. Background Technology

[0002] Currently, the main methods used in narrow space connecting rod clamping devices are as follows:

[0003] Traditional pliers utilize the lever principle, clamping and releasing by tightening and loosening the handle. However, traditional pliers are relatively large, unsuitable for operation in extremely confined spaces, and their clamping surface is flat, resulting in a small contact area with the connecting rod and limited clamping force. For example, utility model CN21911447U discloses an object-picking device for confined spaces, including a clamping part, a connecting rod, and a pull cord. The clamping part includes a fixed clamping plate and a rotating clamping plate, which are crossed and rotatably connected. Both the fixed and rotating clamping plates have clamping ends and connecting ends located on either side of the intersection. The connecting end of the fixed clamping plate is connected to one end of the connecting rod, and the connecting end of the rotating clamping plate is connected to one end of the pull cord. The other end of the pull cord is located at the end of the connecting rod away from the clamping part.

[0004] C-clamp: Simple structure and easy to operate, but it has a small clamping force and requires a large operating space. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art, such as small contact area with the connecting rod and limited clamping force, and to provide a connecting rod clamping device for narrow spaces.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A connecting rod clamping device for narrow spaces includes a first clamping rod and a second clamping rod. The first clamping rod and the second clamping rod each include a handle, a rotating shaft connecting part and a clamping head connected in sequence to form a Z-shaped structure. The first clamping rod and the second clamping rod are both connected to the corresponding rotating shaft connecting part through a rotating shaft. The rotating shaft is located at the end of the first clamping rod and the second clamping rod closer to the clamping head.

[0008] The clamping heads of the first clamping rod and the second clamping rod are both semi-cylindrical structures. The planar side of the semi-cylindrical structure is provided with a semi-cylindrical groove, and the curved side is connected to the rotating shaft connection part through a straight rod. The clamping heads of the first clamping rod and the second clamping rod are positioned opposite each other, and the semi-cylindrical grooves of the clamping heads of the first clamping rod and the second clamping rod cooperate with each other to form a clamping cavity that cooperates with the connecting rod to be clamped.

[0009] Furthermore, the distance between the pivot connection and the distal end of the handle is within 3 to 5 times the distance between the pivot connection and the clamping head.

[0010] Furthermore, the surface of the semi-cylindrical groove of the clamping head is provided with anti-slip texture.

[0011] Furthermore, the surface of the semi-cylindrical groove of the clamping head is provided with a rubber pad.

[0012] Furthermore, the handle is made of aluminum alloy or engineering plastic.

[0013] Furthermore, the surface of the handle is provided with anti-slip texture.

[0014] Furthermore, the shaft is made of steel.

[0015] Furthermore, the clamping head is perpendicular to the extension direction of the handle, and the length of the clamping head is greater than the thickness of the handle.

[0016] Furthermore, a torsion spring is also connected to the pivot, which is sleeved on the outside of the pivot and connected to a first clamping rod and a second clamping rod at its two ends, respectively.

[0017] Furthermore, the end of the handle away from the pivot is bent outwards, and the distance between the bending point of the handle and the clamping head matches the narrow space where the connecting rod to be clamped is located.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] (1) This utility model provides a clamping head with a semi-cylindrical structure on the clamping rod, which increases the longitudinal length of the clamping head and increases the contact area with the connecting rod; and a semi-cylindrical groove is provided on the plane side of the clamping head, so that the clamping heads of the two clamping rods form a clamping cavity that matches the connecting rod to be clamped, and clamping is achieved by fitting the surface of the connecting rod, which further increases the contact area with the connecting rod and improves the overall clamping force and stability.

[0020] (2) This utility model has many anti-slip measures. A rubber pad has been added to the semi-cylindrical groove side of the clamping head, i.e. the clamping surface, to prevent damage to the workpiece surface and further improve the clamping force. The handle surface has been treated with anti-slip material, making the grip more stable and reliable. The shaft material is also made of high-strength steel to ensure the stability and durability of the connection. The overall structure is stable and reliable in use. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a connecting rod clamping device for use in narrow spaces provided in an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the planar structure of a connecting rod clamping device for use in narrow spaces provided in an embodiment of the present utility model;

[0023] In the figure, 1 is the first clamping rod, 11 is the handle, 12 is the rotating shaft connection part, 13 is the clamping head, 131 is the semi-cylindrical groove, 2 is the second clamping rod, and 3 is the rotating shaft. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0029] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] Example 1

[0031] like Figure 1 and Figure 2 As shown, this embodiment provides a connecting rod clamping device for narrow spaces, including a first clamping rod 1 and a second clamping rod 2. Both the first clamping rod 1 and the second clamping rod 2 include a handle 11, a rotating shaft connecting part 12 and a clamping head 13 connected in sequence to form a Z-shaped structure. The first clamping rod 1 and the second clamping rod 2 are both connected to the corresponding rotating shaft connecting part 12 through a rotating shaft 3. The rotating shaft 3 is located at the end of the first clamping rod 1 and the second clamping rod 2 that is closer to the clamping head 13.

[0032] The clamping heads 13 of the first clamping rod 1 and the second clamping rod 2 are both semi-cylindrical structures. The planar side of the semi-cylindrical structure is provided with a semi-cylindrical groove 131, and the curved side is connected to the rotating shaft connection part 12 through a straight rod. The clamping heads 13 of the first clamping rod 1 and the second clamping rod 2 are positioned opposite each other. The semi-cylindrical grooves 131 of the clamping heads 13 of the first clamping rod 1 and the second clamping rod 2 cooperate with each other to form a clamping cavity that cooperates with the connecting rod to be clamped.

[0033] A torsion spring is also connected to the pivot 3. The torsion spring is sleeved on the outside of the pivot 3, and its two ends are respectively connected to the first clamping rod 1 and the second clamping rod 2.

[0034] By using a torsion spring, the first clamping rod 1 and the second clamping rod 2 can remain open to a fixed angle in their natural state. When gripping the two handles 11, the first clamping rod 1 and the second clamping rod 2 can gradually move closer together and tighten until the two clamping heads 13 clamp onto the surface of the connecting rod.

[0035] Working principle:

[0036] Grip the handle 11 firmly to move the clamping head 13 toward the connecting rod, and achieve a firm clamping by using the extended semi-circular clamping surface and anti-slip measures.

[0037] Release handle 11 to release the two connecting rods.

[0038] This invention features a semi-cylindrical clamping head 13 on the clamping rod, which increases the longitudinal length of the clamping head 13 and thus the contact area with the connecting rod. Furthermore, a semi-cylindrical groove 131 is provided on the planar side of the clamping head 13. The clamping heads 13 of the two clamping rods form a clamping cavity that mates with the connecting rod to be clamped, fitting snugly against the surface of the connecting rod to achieve clamping. This further increases the contact area with the connecting rod and improves the overall clamping force and stability.

[0039] Preferably, the clamping head 13 is perpendicular to the extension direction of the handle 11, and the length of the clamping head 13 is greater than the thickness of the handle 11.

[0040] This configuration provides the longest possible clamping head 13, enabling the clamping of the connecting rod over a wider length range and improving clamping stability.

[0041] Preferably, the surface of the semi-cylindrical groove 131 of the clamping head 13 is provided with anti-slip texture.

[0042] Alternatively, the surface of the semi-cylindrical groove 131 of the clamping head 13 is provided with a rubber pad.

[0043] The handle 11 is made of aluminum alloy or engineering plastic.

[0044] The surface of the handle 11 is provided with anti-slip texture.

[0045] The pivot 3 is made of steel and connects the two clamping heads 13, ensuring the stability and durability of the connection.

[0046] This utility model incorporates numerous anti-slip measures. A rubber pad is added to the side of the semi-cylindrical groove 131 of the clamping head 13, i.e., the clamping surface, to prevent damage to the workpiece surface and further improve the clamping force. The handle 11 has been treated with an anti-slip coating, making the grip more stable and reliable. The rotating shaft 3 is also made of high-strength steel to ensure the stability and durability of the connection. The overall structure is stable and reliable in use.

[0047] Preferably, the distance between the pivot connection 12 and the distal end of the handle 11 is within 3 to 5 times the distance between the pivot connection 12 and the clamping head 13.

[0048] The aforementioned pivot connection 12 is positioned to provide a larger lever arm based on the lever principle, thus requiring less effort.

[0049] Preferably, the end of the handle 11 away from the rotating shaft 3 is bent outward, and the distance between the bending point of the handle 11 and the clamping head 13 matches the narrow space where the connecting rod to be clamped is located.

[0050] The bent section is the area that is easy for the user to grip, while the unbent section is the length for the clamping head 13 to enter narrow areas. Providing a longer unbent section makes it more suitable for clamping connecting rods in narrow spaces.

[0051] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A connecting rod clamping device for a narrow space, characterized by, The utility model provides a kind of clamp, including first clamping rod (1) and second clamping rod (2), the first clamping rod (1) and second clamping rod (2) each include handle (11), pivot connecting portion (12) and clamping head (13) connected in turn, form Z shape structure, the first clamping rod (1) and second clamping rod (2) are connected corresponding pivot connecting portion (12) by pivot (3), and the pivot (3) is located in the first clamping rod (1) and second clamping rod (2) one end close to clamping head (13); The clamping head (13) of the first clamping rod (1) and second clamping rod (2) is semicylindrical structure, the planar side of this semicylindrical structure is provided with semicylindrical groove (131), and the curved surface side is connected with the pivot connecting portion (12) by straight rod, the clamping head (13) of the first clamping rod (1) and second clamping rod (2) is opposite, and the semicylindrical groove (131) of the clamping head (13) of the first clamping rod (1) and second clamping rod (2) cooperates with each other to form a clamping cavity matched with the connecting rod to be clamped.

2. A connecting rod clamping device for a narrow space according to claim 1, characterized in that The distance between the pivot connecting portion (12) and the distal end of the handle (11) is within 3-5 times the distance between the pivot connecting portion (12) and the clamping head (13).

3. A connecting rod clamping device for narrow space according to claim 1, characterized in that, The surface of the semicylindrical groove (131) of the clamping head (13) is provided with anti-slip lines.

4. The connecting rod clamping device for a narrow space according to claim 1, wherein The surface of the semicylindrical groove (131) of the clamping head (13) is provided with rubber pads.

5. The connecting rod clamping device for a narrow space according to claim 1, wherein The handle (11) is made of aluminum alloy or engineering plastic.

6. The connecting rod clamping device for a narrow space according to claim 1, wherein The surface of the handle (11) is provided with anti-slip lines.

7. The connecting rod clamping device for a narrow space according to claim 1, wherein The pivot (3) is made of steel.

8. The connecting rod clamping device for a narrow space according to claim 1, wherein The extension direction of the clamping head (13) is perpendicular to the handle (11), and the length of the clamping head (13) is greater than the thickness of the handle (11).

9. The connecting rod clamping device for a narrow space according to claim 1, wherein A torsion spring is also connected to the pivot (3), which is wrapped outside the pivot (3) and connected to the first clamping rod (1) and the second clamping rod (2) at both ends.

10. The connecting rod clamping device for a narrow space according to claim 1, wherein The end of the handle (11) away from the pivot (3) is bent towards the outside, and the distance between the bending point of the handle (11) and the clamping head (13) is matched with the narrow space of the connecting rod to be clamped.

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