Switching tool for fastening bolt

Abstract

The utility model provides an adapter tool for fastening bolts, which comprises a sleeve body, a square groove is arranged in the middle of one side of the sleeve body, a square head is inserted in the square groove, one end of the square head outside the square groove is fixedly connected with a disc head, and the outer surface of the disc head is fixedly connected with a handle. The sleeve body is sleeved with two rings in sliding contact with the sleeve body, three positioning screws used for limiting the relative positions of the rings and the sleeve body are annularly and equidistantly connected to the outer surfaces of the rings in a threaded mode, and three inner threaded pipes are annularly and equidistantly installed on the outer surfaces of the rings. The three internal threaded pipes and the three positioning screws are alternately arranged, the internal threaded pipes are internally connected with screw rods in a threaded mode, and the ends, located on the outer sides of the internal threaded pipes, of the screw rods are provided with bull eyeballs. The anti-skewing bolt has the advantages that the sleeve body is prevented from skewing in a deep hole, and the frequency of adjusting the relative position of the sleeve body and the head of the bolt is reduced.

Description

Technical Field

[0001] The utility model relates to a conversion tool for fastening bolts, belonging to the field of socket wrenches. Background Art

[0002] For bolts deep in the hole, a socket wrench is needed to tighten the bolts. One end of the socket wrench is designed with a groove that matches the size of the bolt head, so that the bolt head is embedded in the groove of the socket wrench. Then, the sleeve body is engaged by manual force or pneumatic tools to rotate the sleeve body in the socket wrench, thereby transmitting torque to the bolt. After the sleeve body is inserted into a deeper hole, the length of the bolt head inserted into the sleeve body is relatively deep. The supported range of the sleeve body is limited to the clamping part between the sleeve body and the bolt head. There is no contact between the hole wall and the sleeve body. Therefore, when the handle is used to adjust the direction of the handle during the process of twisting the sleeve body, the sleeve body will be skewed in the deep hole because there are fewer supported points on the sleeve body, which will cause the sleeve body to separate from the bolt head. The relative position of the sleeve body and the bolt head needs to be adjusted frequently, affecting work efficiency. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a conversion tool for fastening bolts to solve the problems raised in the above-mentioned background technology. The utility model prevents the sleeve body from tilting in the deep hole and reduces the number of times the relative position of the sleeve body and the bolt head is adjusted.

[0004] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions: a conversion tool for tightening bolts, including a sleeve body, a square groove is opened in the middle of one side of the sleeve body, a square head is inserted in the square groove, a disc head is connected and fixed to the end of the square head outside the square groove, a handle is connected and fixed to the outer surface of the disc head, two rings are sleeved on the sleeve body that are in sliding contact with the sleeve body, the outer surface of the ring is connected with three positioning screws for limiting the relative position of the ring and the sleeve body in an annular equidistant thread, the outer surface of the ring is connected with three internal threaded tubes in an annular equidistant manner, the three internal threaded tubes and the three positioning screws are arranged alternately, the internal thread of the internal threaded tube is connected with a screw, and a bull's eye is installed at one end of the screw outside the internal threaded tube.

[0005] Furthermore, the outer surface of the ring is provided with three through holes at equal intervals in a circular shape, and an inner threaded sleeve is provided on the outer side of the through hole and arranged concentrically with the through hole. The inner threaded sleeve is connected and fixed to the ring through a connecting piece, and the positioning screw is threadedly connected in the inner threaded sleeve, and one end of the positioning screw passes through the through hole and contacts with the sleeve body.

[0006] Further, the connecting piece includes an arc-shaped plate, and two arc-shaped plates are symmetrically connected and fixed to the outer surface of the internal threaded sleeve, and a first connecting ear is connected and fixed to one end of the arc-shaped plate away from the internal threaded sleeve, and three protrusions are fixed in an annular shape and equidistantly on the outer surface of the ring, and the protrusions coincide with the installation position of the internal threaded tube, and both ends of the protrusions are connected and fixed with second connecting ears that match the first connecting ears, and the two second connecting ears on one of the protrusions are respectively connected to the matching first connecting ears through fasteners formed by connecting screws and nuts.

[0007] Furthermore, a positioning hole is provided on a side of the protruding portion facing away from the ring, and one end of the internally threaded tube is connected and fixed in the positioning hole.

[0008] Furthermore, the protrusion and the ring are an integrally formed structure, and the four corners of the protrusion are all processed with rounded corners.

[0009] Furthermore, the bull's eye ball includes a ball seat, in which a spherical body is rotatably mounted, one end of the screw rod located outside the internal threaded tube is connected and fixed to the ball seat, and the outer surface of the ball seat is processed with two flat openings for clamping a wrench.

[0010] Beneficial effects of the utility model:

[0011] 1. According to the size of the deep hole for the mounting bolt, adjust the spacing between the two rings along the sleeve body so that the relative positions of the two rings and the sleeve body meet the needs of the deep hole. Then use the positioning screw to limit the relative position of the ring and the sleeve body to adjust the relative position of the ring and the sleeve body according to the size of the deep hole.

[0012] 2. After the relative positions of the ring and the sleeve body are adjusted, turn the screw to increase or shorten the length formed by the screw and the internal threaded tube until the sphere in the bull's eye rolls in contact with the inner wall of the deep hole. At this time, the three groups of structures formed by the bull's eye, the screw and the internal threaded tube on a ring keep the sleeve body concentric with the deep hole, that is, the points where the sleeve body is supported in the deep hole are increased, preventing the sleeve body from tilting in the deep hole and reducing the number of times the relative position of the sleeve body and the bolt head is adjusted.

[0013] 3. Screw the positioning screw into the internal threaded sleeve, and then use the fastener formed by the connecting screw and the nut to connect the corresponding first connecting ear and the second connecting ear to complete the assembly of the internal threaded sleeve and the ring, so as to partially increase the wall thickness of the positioning screw for installing the ring without increasing the thickness of the ring as a whole. At the same time, when the thread on the positioning screw is damaged, the positioning screw with damaged thread can be replaced after separating the connecting screw and the nut. Compared with the method of processing the screw hole on the ring to match the positioning screw, the replacement cost of parts is reduced. At the same time, one end of the internal threaded tube is fixed in the positioning hole on the protruding part, so as to improve the connection stability between the internal threaded tube and the ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0015] Figure 1 This is a schematic diagram of the structure of a bolt fastening adapter tool of the utility model;

[0016] Figure 2 For this utility model Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 This is a schematic diagram of the assembly of a handle, a disc head, a square head and a sleeve body in a bolt fastening adapter tool of the utility model;

[0018] Figure 4 It is a schematic diagram of the assembly of the protrusion and the ring in a conversion tool for fastening bolts of the utility model;

[0019] Figure 5 It is a schematic diagram of the assembly of the arc plate and the internal thread sleeve in a conversion tool for fastening bolts of the utility model;

[0020] In the figure: 1-sleeve body, 2-square groove, 3-disc head, 4-handle, 5-square head, 6-ring, 7-internal thread sleeve, 8-positioning screw, 9-arc plate, 10-connecting screw, 11-first connecting ear, 12-internal thread tube, 13-bull's eyeball, 14-screw, 15-nut, 16-protrusion, 17-second connecting ear, 18-positioning hole, 19-through hole. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] See also Figure 1 and Figure 3 The utility model provides a technical solution: a conversion tool for tightening bolts, including a sleeve body 1, a square groove 2 is opened in the middle of one side of the sleeve body 1, a square head 5 is inserted in the square groove 2, and a disc head 3 is connected and fixed to one end of the square head 5 outside the square groove 2, and a handle 4 is connected and fixed to the outer surface of the disc head 3, so that the sleeve body 1 is sleeved on the bolt head in the deep hole, and then the square head 5 is inserted in the square groove 2, so that the sleeve body 1 can be rotated by using the handle 4, thereby facilitating the tightening of the bolt in the deep hole.

[0023] See also Figure 1-Figure 3Two rings 6 are sleeved on the sleeve body 1 and are in sliding contact with the sleeve body 1. The outer surface of the ring 6 is annular and equidistantly threaded and connected with three positioning screws 8 for limiting the relative position of the ring 6 and the sleeve body 1. According to the size of the deep hole of the mounting bolt, the spacing between the two rings 6 is adjusted along the sleeve body 1 so that the relative position of the two rings 6 and the sleeve body 1 meets the needs of the deep hole. Subsequently, the positioning screws 8 are used to limit the relative position of the ring 6 and the sleeve body 1, so as to adjust the relative position of the ring 6 and the sleeve body 1 according to the size of the deep hole.

[0024] See also Figure 1 , Figure 2 , Figure 4 and Figure 5 The outer surface of the ring 6 is annularly and equidistantly provided with three through holes 19, and an inner thread sleeve 7 is arranged concentrically with the through hole 19 on the outer side of the through hole 19. Two arc plates 9 are symmetrically connected and fixed to the outer surface of the inner thread sleeve 7. The end of the arc plate 9 away from the inner thread sleeve 7 is connected and fixed with a first connecting ear 11. The outer surface of the ring 6 is annularly and equidistantly provided with three protrusions 16, and the protrusion 16 and the ring 6 are an integrally formed structure. The four corners of the protrusion 16 are processed with fillets, and the two ends of the protrusion 16 are connected and fixed with second connecting ears 17 matching with the first connecting ear 11, and the two second connecting ears 17 on one protrusion 16 are respectively connected with the first connecting ears 11 by fasteners formed by connecting screws 10 and nuts 15. 1 is connected, the positioning screw 8 is threadedly connected in the internal threaded sleeve 7, one end of the positioning screw 8 passes through the through hole 19 and contacts the sleeve body 1, so that the positioning screw 8 is screwed into the internal threaded sleeve 7, and then the fastener formed by the connecting screw 10 and the nut 15 is connected with the corresponding first connecting ear 11 and the second connecting ear 17 to complete the assembly of the internal threaded sleeve 7 and the ring 6, so as to partially increase the wall thickness of the ring 6 for installing the positioning screw 8 without increasing the thickness of the ring 6 as a whole. At the same time, when the thread on the positioning screw 8 is damaged, the positioning screw 8 with the damaged thread can be replaced after the connecting screw 10 and the nut 15 are separated. Compared with the method of processing the screw hole matching the positioning screw 8 on the ring 6, the replacement cost of parts is reduced.

[0025] See also Figure 1 , Figure 2 and Figure 4The outer surface of the ring 6 is annular and equidistantly mounted with three internally threaded tubes 12, wherein a positioning hole 18 is provided on the side of the protruding portion 16 facing away from the ring 6, so that one end of the internally threaded tube 12 is connected and fixed in the positioning hole 18, thereby improving the connection stability between the internally threaded tube 12 and the ring 6. The three internally threaded tubes 12 and the three positioning screws 8 are arranged alternately, and the internal thread of the internally threaded tube 12 is connected with a screw rod 14, and a bull's eye ball 13 is installed at one end of the screw rod 14 located outside the internally threaded tube 12, and the bull's eye ball 13 includes a ball seat, and a spherical body is rotatably mounted in the ball seat, and one end of the screw rod 14 located outside the internally threaded tube 12 is connected to the ball seat After the relative positions of the ring 6 and the sleeve body 1 are adjusted, the screw 14 is turned to increase or shorten the length formed by the screw 14 and the internal threaded tube 12 until the spherical body in the bull's eye 13 rolls in contact with the inner wall of the deep hole. At this time, the three groups of structures formed by the bull's eye 13, the screw 14 and the internal threaded tube 12 on one ring 6 keep the sleeve body 1 concentric with the deep hole, that is, the points at which the sleeve body 1 is supported in the deep hole are increased, the sleeve body 1 is prevented from tilting in the deep hole, and the number of times the relative position of the sleeve body 1 and the bolt head is adjusted is reduced.

[0026] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A bolt fastening adapter tool, comprising a sleeve body (1), characterized in that: A square groove (2) is provided in the middle of one side of the sleeve body (1), a square head (5) is inserted in the square groove (2), a disc head (3) is connected and fixed to one end of the square head (5) outside the square groove (2), a handle (4) is connected and fixed to the outer surface of the disc head (3), two rings (6) are sleeved on the sleeve body (1) and are in sliding contact with the sleeve body (1), the outer surface of the ring (6) is connected with three positioning screws (8) for limiting the relative position of the ring (6) and the sleeve body (1) in an annular equidistant thread, the outer surface of the ring (6) is connected with three internal threaded tubes (12) in an annular equidistant manner, the three internal threaded tubes (12) and the three positioning screws (8) are arranged alternately, the internal thread of the internal threaded tube (12) is connected with a screw rod (14), and a bull's eye ball (13) is installed on one end of the screw rod (14) outside the internal threaded tube (12).

2. The bolt fastening adapter according to claim 1, characterized in that: The outer surface of the ring (6) is provided with three through holes (19) in an annular shape and equidistantly spaced from each other. An internal threaded sleeve (7) arranged concentrically with the through hole (19) is provided outside the through hole (19). The internal threaded sleeve (7) is connected and fixed to the ring (6) via a connecting piece. The positioning screw (8) is threadedly connected in the internal threaded sleeve (7). One end of the positioning screw (8) passes through the through hole (19) and contacts the sleeve body (1).

3. A bolt fastening tool according to claim 2, characterized in that: The connecting member comprises an arc-shaped plate (9), two arc-shaped plates (9) are symmetrically connected and fixed to the outer surface of the internal threaded sleeve (7), a first connecting ear (11) is connected and fixed to one end of the arc-shaped plate (9) away from the internal threaded sleeve (7), three protrusions (16) are fixed to the outer surface of the ring (6) in an annular shape and equidistantly, the protrusions (16) coincide with the installation positions of the internal threaded tube (12), and second connecting ears (17) matching with the first connecting ear (11) are connected and fixed to both ends of the protrusion (16), and the two second connecting ears (17) on one of the protrusions (16) are respectively connected to the first connecting ears (11) that fit therewith through fasteners formed by connecting screws (10) and nuts (15).

4. The bolt fastening adapter according to claim 3, characterized in that: A positioning hole (18) is provided on a side of the protruding portion (16) facing away from the ring (6), and one end of the internally threaded tube (12) is connected and fixed in the positioning hole (18).

5. The bolt fastening adapter according to claim 3, characterized in that: The protruding portion (16) and the ring (6) are an integrally formed structure, and the four corners of the protruding portion (16) are all processed with rounded corners.

6. The bolt fastening adapter according to claim 1, characterized in that: The bull's eye ball (13) comprises a ball seat, in which a spherical body is rotatably mounted, and one end of the screw rod (14) located outside the internal threaded tube (12) is connected and fixed to the ball seat, and the outer surface of the ball seat is processed with two flat openings for clamping a wrench.

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