Caliper type turning wrench

Abstract

The utility model provides a caliper type turning wrench which comprises a handle, a first caliper head and a second caliper head, the first caliper head is used for being connected with a shaft neck portion of a coupler in a clamping mode, the second caliper head is used for being connected with the shaft neck portion of the coupler in a clamping mode, the first caliper head is of a semi-arc structure, and the second caliper head is installed at one end of the handle. And the joint of the second clamp head and the handle is rotationally connected with the first clamp head. A caliper type structure is adopted, a lever connecting rod stress application mechanism is used for clamping the shaft neck position of the coupler for turning, the handle is moved by hand, the caliper drives the coupler to rotate, and the purpose of turning is achieved. And the damage of turning to a coupling fixing bolt is reduced. The structure is compact without detachable parts, and carrying and using are easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of wrenches, in particular to a caliper type turning wrench. Background Art

[0002] The oil pump unit needs to be cranked regularly. The cranking wrenches are made by each unit themselves, and most of them are cranked by prying the coupling fixing bolts, which will damage the coupling bolts. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a caliper type turning wrench in view of the deficiencies of the prior art.

[0004] The utility model solves the above-mentioned technical problem through the following technical solution: a caliper-type turning wrench, comprising: a handle, a first caliper head for clamping the neck part of a coupling, and a second caliper head for clamping the neck part of a coupling, wherein the first caliper head is a semicircular arc structure, the second caliper head is installed at one end of the handle, and the connection between the second caliper head and the handle is rotatably connected to the first caliper head.

[0005] The beneficial effects of the technical solution of the utility model are: the caliper structure is adopted, the lever connecting rod force mechanism is used to clamp the coupling shaft neck position for turning, the handle is moved by hand, and the caliper drives the coupling to rotate to achieve the purpose of turning. The damage to the coupling fixing bolts caused by turning is reduced. The structure is compact and has no disassembly parts, and it is simple and convenient to carry and use.

[0006] Furthermore, the second pliers head is of an arc structure, a first groove is provided on the second pliers head, a second groove is provided at the other end of the first pliers head, the second groove is arranged opposite to the first groove, and a triangular belt is provided in the first groove and the second groove.

[0007] The beneficial effect of adopting the above further technical solution is: installing a V-belt at the diametrical position of the caliper improves the anti-slip effect and facilitates the caliper to hold the cylindrical position of the half coupling.

[0008] Furthermore, the depth of the first groove is 6 mm, the bottom width of the first groove is 17 mm, the top width of the first groove is 16 mm, the second groove has the same structure as the first groove, and the central angle of the second pliers head is 35 degrees.

[0009] The beneficial effects of adopting the above further technical solution are: the design of the size of the first groove facilitates the stable installation of the V-belt in the first groove, prevents the V-belt from falling off, and improves the buffering performance and anti-slip performance of the V-belt. The central angle of the second clamp head is 35 degrees, which facilitates the second clamp head to clamp the coupling shaft neck.

[0010] Furthermore, the other end of the first pliers is longer than 20 mm of the semicircle, one end of the first pliers is rotatably connected to the connection between the second pliers and the handle, and there is a gap between one end of the first pliers and the second pliers, and the value of the gap is 2 mm.

[0011] The beneficial effect of adopting the above further technical solution is that the other end of the first clamp is longer than the semicircle by 20mm, which is convenient for the first clamp to clamp the coupling shaft neck, increase the contact area and prevent it from falling off. The value of the gap is 2mm to prevent the opening from being too large, as long as the wrench can be inserted.

[0012] Furthermore, the handle is a round tube structure, and the second pliers head is integrally formed with the handle, or the handle and the second pliers head are welded, or the handle and the second pliers head are connected by threads.

[0013] The beneficial effects of adopting the above further technical solution are: the handle is a round tube structure, which is convenient for holding the handle and reduces the weight of the handle. The connection mode design of the second pliers head and the handle facilitates the user to select the connection mode of the second pliers head and the handle according to actual needs, thereby improving the applicability of the wrench.

[0014] Furthermore, an included angle is formed between the second pliers head and the handle, and the first pliers head and the second pliers head are both adapted to the coupling shaft neck position.

[0015] The beneficial effect of adopting the above further technical solution is that there is an angle between the second pliers and the handle, which facilitates the second pliers to abut against the neck portion of the coupling shaft, and facilitates the second pliers and the first pliers to clamp the neck portion of the coupling shaft. The first pliers and the second pliers are both adapted to the neck portion of the coupling shaft, which facilitates the second pliers and the first pliers to surround and clamp the neck portion of the coupling shaft.

[0016] Furthermore, the handle, the first pliers head and the second pliers head are all made of aluminum alloy, the first pliers head and the second pliers head are both provided with rubber anti-slip pads, and the outer side wall of the handle is provided with knurling.

[0017] The beneficial effect of adopting the above further technical solution is that the handle, the first pliers head and the second pliers head are all made of aluminum alloy, which is made of high-strength aluminum alloy and is explosion-proof material. The wrench has high strength and explosion-proof performance, and can be used in oil and gas explosion areas, improving the safety of turning in oil and gas explosion areas and reducing weight. A rubber anti-skid pad is installed at the caliper diameter position to improve the anti-skid effect and facilitate the caliper to hold the cylindrical position of the half coupling. Knurling is provided on the outer wall of the handle to improve the anti-skid performance of the handle and facilitate the user to hold the handle.

[0018] Furthermore, the connection between the second pliers head and the handle is rotatably connected to the first pliers head via a fixing pin.

[0019] The beneficial effect of adopting the above further technical solution is that the provision of the fixing pin facilitates the rotational connection between the second pliers head and the first pliers head, and facilitates the installation and maintenance of the first pliers head and the second pliers head.

[0020] Furthermore, a U-shaped structure for mounting the first pliers is provided on the second pliers, and the fixing pin is detachably mounted on the second pliers.

[0021] The beneficial effects of adopting the above further technical solution are: the setting of the U-shaped structure facilitates the installation and maintenance of the first clamp head, prevents the first clamp head from shaking, and improves the stability and reliability of the wrench. The fixing pin is detachably installed on the second clamp head, which facilitates the installation and maintenance of the fixing pin and facilitates the connection and separation of the first clamp head and the second clamp head.

[0022] Furthermore, the length of the handle is 650 mm, the width of the first pliers head is 20 mm, and the width of the second pliers head is 40 mm.

[0023] The beneficial effect of adopting the above further technical solution is that the size design of the handle, the first pliers head and the second pliers head improves the strength of the wrench and improves the stability and reliability of the wrench.

[0024] Advantages of additional aspects of the present invention will be partially given in the following description, and partially become apparent from the following description, or be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic structural diagram of a caliper-type turning wrench provided in an embodiment of the utility model.

[0026] Figure 2 for Figure 1 The structure shown is a schematic diagram of the structure cut along the section line AA.

[0027] Description of the accompanying drawings: 1. handle; 2. first clamp head; 3. second clamp head; 4. first groove; 5. gap; 6. fixing pin. DETAILED DESCRIPTION

[0028] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The embodiments given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0029] like Figure 1 and Figure 2As shown, an embodiment of the utility model provides a caliper type turning wrench, comprising: a handle 1, a first caliper head 2 for clamping the neck position of the coupling, and a second caliper head 3 for clamping the neck position of the coupling, wherein the first caliper head 2 is a semicircular arc structure, the second caliper head 3 is installed at one end of the handle 1, and the connection between the second caliper head 3 and the handle 1 is rotatably connected to the first caliper head 2.

[0030] The beneficial effects of the technical solution of the utility model are: the caliper structure is adopted, the lever connecting rod force mechanism is used to clamp the coupling shaft neck position for turning, the handle is moved by hand, and the caliper drives the coupling to rotate to achieve the purpose of turning. The damage to the coupling fixing bolts caused by turning is reduced. The structure is compact and has no disassembly parts, and it is simple and convenient to carry and use.

[0031] Promote the application of caliper-type explosion-proof cranking wrenches (caliper-type cranking wrenches) to improve the safety of cranking in oil and gas explosion areas and reduce the damage to the coupling fixing bolts caused by cranking. The cranking wrench (caliper-type cranking wrench) must be made of materials with high strength and explosion-proof performance. In terms of structural design, a lever-connecting rod force mechanism is used to clamp the coupling shaft neck position for cranking to avoid damage to the coupling fixing bolts.

[0032] The utility model provides a caliper-type explosion-proof turning wrench (caliper-type turning wrench), which is made of high-strength aluminum alloy and is an explosion-proof material. The turning wrench adopts a caliper-type structure, and a rubber anti-skid pad is installed at the caliper's diameter position. The caliper holds the semi-coupling cylindrical position (coupling shaft neck position), and the lever-connecting rod force-adding principle is used to make the caliper hold the coupling cylinder tightly. When the handle is moved by hand, the caliper drives the coupling to rotate, thereby achieving the turning purpose.

[0033] like Figure 1 and Figure 2 As shown, further, the second pliers head 3 is an arc structure, a first groove 4 is provided on the second pliers head 3, a second groove is provided at the other end of the first pliers head 2, the second groove is arranged opposite to the first groove 4, and a V-belt is provided in the first groove 4 and the second groove.

[0034] The beneficial effect of adopting the above further technical solution is: installing a V-belt at the diametrical position of the caliper improves the anti-slip effect and facilitates the caliper to hold the cylindrical position of the half coupling.

[0035] like Figure 1 and Figure 2 As shown, further, the depth of the first groove 4 is 6 mm, the bottom width of the first groove 4 is 17 mm, the top width of the first groove 4 is 16 mm, the second groove has the same structure as the first groove 4, and the central angle of the second pliers head 3 is 35 degrees.

[0036] The beneficial effects of adopting the above further technical solution are: the design of the size of the first groove facilitates the stable installation of the V-belt in the first groove, prevents the V-belt from falling off, and improves the buffering performance and anti-slip performance of the V-belt. The central angle of the second clamp head is 35 degrees, which facilitates the second clamp head to clamp the coupling shaft neck.

[0037] The first pliers head is provided with a first groove of 6 mm, a groove bottom of 17 mm, and a groove top of 16 mm, and a B#V triangle belt is inlaid therein.

[0038] like Figure 1 and Figure 2 As shown, further, the length of the other end of the first pliers 2 is greater than the semicircle of 20mm, one end of the first pliers 2 is rotatably connected to the connection between the second pliers 3 and the handle 1, and there is a gap 5 between one end of the first pliers 2 and the second pliers 3, and the value of the gap 5 is 2mm.

[0039] The beneficial effect of adopting the above further technical solution is that the other end of the first clamp is longer than the semicircle by 20mm, which is convenient for the first clamp to clamp the coupling shaft neck, increase the contact area and prevent it from falling off. The value of the gap is 2mm to prevent the opening from being too large, as long as the wrench can be inserted.

[0040] like Figure 1 and Figure 2 As shown, further, the handle 1 is a round tube structure, and the second pliers head 3 is integrally formed with the handle 1, or the handle 1 and the second pliers head 3 are welded, or the handle 1 and the second pliers head 3 are connected by threads.

[0041] The beneficial effects of adopting the above further technical solution are: the handle is a round tube structure, which is convenient for holding the handle and reduces the weight of the handle. The connection mode design of the second pliers head and the handle facilitates the user to select the connection mode of the second pliers head and the handle according to actual needs, thereby improving the applicability of the wrench.

[0042] like Figure 1 and Figure 2 As shown, further, there is an angle between the second pliers head 3 and the handle 1, and the first pliers head 2 and the second pliers head 3 are both adapted to the coupling shaft neck position.

[0043] The beneficial effect of adopting the above further technical solution is that there is an angle between the second pliers and the handle, which facilitates the second pliers to abut against the neck portion of the coupling shaft, and facilitates the second pliers and the first pliers to clamp the neck portion of the coupling shaft. The first pliers and the second pliers are both adapted to the neck portion of the coupling shaft, which facilitates the second pliers and the first pliers to surround and clamp the neck portion of the coupling shaft.

[0044] like Figure 1 and Figure 2As shown, further, the handle 1, the first pliers head 2 and the second pliers head 3 are all made of aluminum alloy, the first pliers head 2 and the second pliers head 3 are both provided with rubber anti-slip pads, and the outer wall of the handle 1 is provided with knurling.

[0045] The beneficial effect of adopting the above further technical solution is that the handle, the first pliers head and the second pliers head are all made of aluminum alloy, which is made of high-strength aluminum alloy and is explosion-proof material. The wrench has high strength and explosion-proof performance, and can be used in oil and gas explosion areas, improving the safety of turning in oil and gas explosion areas and reducing weight. A rubber anti-skid pad is installed at the caliper diameter position to improve the anti-skid effect and facilitate the caliper to hold the cylindrical position of the half coupling. Knurling is provided on the outer wall of the handle to improve the anti-skid performance of the handle and facilitate the user to hold the handle.

[0046] Since the oil pump unit is installed in the oil and gas site, which is an oil and gas explosion area, the regulations stipulate that explosion-proof tools should be used in the explosion area. The main problem with the existing turning wrenches is that they do not have explosion-proof performance, and some turning wrenches with explosion-proof performance are not strong enough. The handle, the first clamp head and the second clamp head of the embodiment of the utility model are made of aluminum alloy, which is made of high-strength aluminum alloy and is made of explosion-proof material. This makes the wrench high in strength and explosion-proof, and can be used in oil and gas explosion areas, improving the safety of turning in oil and gas explosion areas and reducing weight.

[0047] like Figure 1 and Figure 2 As shown, further, the connection between the second pliers head 3 and the handle 1 is rotatably connected to the first pliers head 2 through a fixing pin 6.

[0048] The beneficial effect of adopting the above further technical solution is that the provision of the fixing pin facilitates the rotational connection between the second pliers head and the first pliers head, and facilitates the installation and maintenance of the first pliers head and the second pliers head.

[0049] like Figure 1 and Figure 2 As shown, further, a U-shaped structure for mounting the first clamp head 2 is provided on the second clamp head 3 , and the fixing pin 6 is detachably mounted on the second clamp head 3 .

[0050] The beneficial effects of adopting the above further technical solution are: the setting of the U-shaped structure facilitates the installation and maintenance of the first clamp head, prevents the first clamp head from shaking, and improves the stability and reliability of the wrench. The fixing pin is detachably installed on the second clamp head, which facilitates the installation and maintenance of the fixing pin and facilitates the connection and separation of the first clamp head and the second clamp head.

[0051] like Figure 1 and Figure 2As shown, further, the length of the handle 1 is 650 mm, the width of the first pliers head 2 is 20 mm, and the width of the second pliers head 3 is 40 mm.

[0052] The beneficial effect of adopting the above further technical solution is that the size design of the handle, the first pliers head and the second pliers head improves the strength of the wrench and improves the stability and reliability of the wrench.

[0053] A caliper-type explosion-proof turning wrench (caliper-type turning wrench) is an explosion-proof tool that can be used in oil and gas explosion areas. The caliper-type structural design does not damage the coupling bolts and other parts during use, protecting the coupling from damage. The structure is compact and has no disassembly parts, making it easy to carry and use.

[0054] The free end of the first pliers head is grooved inside (second groove), which is the same as the first groove. The hook head of the first pliers head is larger than the semicircle by 20mm. The end of the handle connected to the second pliers head is a round tube, which can be welded or threaded. The outer knurling of the tube is anti-slip, and the shaft (fixing pin) is made detachable. The diameter of the handle can be 36mm. The caliper type turning wrench can be made of aluminum 7075 as a whole, mainly to reduce weight.

[0055] The main purpose of controlling the size of the gap is to prevent it from opening too large, as long as a wrench (caliper-type turning wrench) can be inserted.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A caliper type turning wrench, characterized in that: include: A handle, a first clamp head for clamping the neck part of the coupling, and a second clamp head for clamping the neck part of the coupling, the first clamp head is a semicircular arc structure, the second clamp head is installed at one end of the handle, and the connection between the second clamp head and the handle is rotatably connected to the first clamp head.

2. A caliper type turning wrench according to claim 1, characterized in that: The second pliers head is an arc structure, a first groove is arranged on the second pliers head, a second groove is arranged at the other end of the first pliers head, the second groove is arranged opposite to the first groove, and a triangular belt is arranged in the first groove and the second groove.

3. A caliper type turning wrench according to claim 2, characterized in that: The depth of the first groove is 6 mm, the bottom width of the first groove is 17 mm, the top width of the first groove is 16 mm, the second groove has the same structure as the first groove, and the central angle of the second pliers head is 35 degrees.

4. The caliper type turning wrench according to claim 1, characterized in that: The other end of the first pliers is 20 mm longer than the semicircle, one end of the first pliers is rotatably connected to the connection between the second pliers and the handle, and there is a gap between one end of the first pliers and the second pliers, and the value of the gap is 2 mm.

5. The caliper type turning wrench according to claim 1, characterized in that: The handle is a round tube structure, and the second pliers head is integrally formed with the handle, or the handle and the second pliers head are welded, or the handle and the second pliers head are connected by threads.

6. The caliper type turning wrench according to claim 1, characterized in that: An included angle is formed between the second pliers head and the handle, and both the first pliers head and the second pliers head are adapted to the coupling shaft neck position.

7. The caliper type turning wrench according to claim 1, characterized in that: The handle, the first pliers head and the second pliers head are all made of aluminum alloy. The first pliers head and the second pliers head are both provided with rubber anti-slip pads, and the outer side wall of the handle is provided with knurling.

8. The caliper type turning wrench according to claim 1, characterized in that: The connection point between the second pliers head and the handle is rotatably connected to the first pliers head through a fixing pin.

9. The caliper type turning wrench according to claim 8, characterized in that: The second pliers head is provided with a U-shaped structure for mounting the first pliers head, and the fixing pin is detachably mounted on the second pliers head.

10. The caliper type turning wrench according to claim 1, characterized in that: The length of the handle is 650 mm, the width of the first pliers head is 20 mm, and the width of the second pliers head is 40 mm.

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