CN219404169U - bolt installation tool - Google Patents

Abstract

The utility model belongs to the technical field of mechanical assembly, and discloses a bolt installation tool which comprises a bracket, a first screw, a second screw and a limiting piece. The bracket is provided with a first connecting part and a second connecting part which are oppositely arranged; the first screw rod is in threaded connection with the first connecting part, and the end part of the first screw rod can be matched with the head part of the first bolt to be installed; the second screw rod is in threaded connection with the second connecting part, and the end part of the second screw rod can be matched with the head part of the second bolt to be installed; the limiting piece is detachably connected to the support, and when the first screw rod and the second screw rod move towards the direction close to each other, the limiting piece is used for limiting movement of the first bushing matched with the first bolt to be installed and movement of the second bushing matched with the second bolt to be installed. The bolt installation tool can realize one-time installation of two groups of opposite bolts in a narrow space, greatly reduces the bolt installation difficulty caused by heavier components and inconvenience in coordination, and improves the installation quality of the bolts.

Description

bolt installation tool

technical field

The utility model relates to the technical field of mechanical assembly, in particular to a bolt installation tool.

Background technique

In the assembly process, fasteners are mainly divided into two categories: bolts and rivets, and bolts are often used for detachable structural connections. For joints that require repeated disassembly and assembly and large loads, bolted connections are mostly used. When the bolt is installed, it should be pushed in along the axis of the hole. If the installation is difficult, an auxiliary tool (such as a copper rod or a plastic hammer, etc.) can be used to drive the bolt in along the axis of the hole.

During the assembly process of the aircraft, common bolts in open spaces are usually assembled with tools such as sockets or wrenches, which are easy to operate and high in construction efficiency. Whereas in tight space areas, such as the connection between the wing inner flap box section assembly and the inner flap cover plate assembly, there is a bolt on each of the two joints, and the two facing bolt assemblies contain washers, nuts, cotter pins and traveling flat bushings. Due to the limited space here and the heavy components, it is inconvenient to coordinate the joint butt joint, so only one person can withstand the floating flat bushing, and the other person can use a copper rod or a plastic hammer to hit the bolt head to drive the bolt along the hole axis, and finally complete the installation of two sets of coaxial bolts. The above-mentioned assembly method has the problems of inconvenient use of tools, difficulty in applying force, cumbersome installation and low efficiency, which seriously affects the assembly quality and efficiency of the aircraft.

Therefore, need badly a kind of bolt installation tool, to solve the above problems.

Utility model content

The purpose of the utility model is to provide a bolt installation tool, which can realize one-time installation of two groups of facing bolts in a narrow space, greatly reduces the difficulty of bolt installation caused by heavy parts and inconvenient coordination, and improves the installation quality of bolts.

For this purpose, the utility model adopts the following technical solutions:

Bolt installation kit, including:

The bracket has a first connecting portion and a second connecting portion disposed opposite to each other;

The first screw is threadedly connected to the first connecting part, and the end of the first screw can cooperate with the head of the first bolt to be installed;

The second screw is threadedly connected with the second connecting part, and the end of the second screw can cooperate with the head of the second bolt to be installed;

The limiter is detachably connected to the bracket, and when the first screw and the second screw move toward each other, the limiter is used to limit the movement of the first bush that cooperates with the first bolt to be installed and the movement of the second bush that cooperates with the second bolt to be installed.

Optionally, the limiting member includes a first spacer and a second spacer arranged at intervals, the first spacer is opposite to the first connection part, the second spacer is directly opposite to the second connection part, a first positioning groove and a second positioning groove are provided on the bracket, the first spacer can be inserted into the first positioning groove, and the second spacer can be inserted into the second positioning groove.

Optionally, the end face of the first pad facing the first screw rod is used to abut against the side of the first bushing away from the first bolt to be installed, and a first avoidance hole is opened through the first pad, the first avoidance hole is coaxially arranged with the first screw rod, and the rod of the first bolt to be installed can pass through the first avoidance hole;

The end surface of the second spacer facing the second screw rod is used to abut against the side of the second bushing away from the second bolt to be installed, and a second avoidance hole is formed through the second spacer, the second avoidance hole is coaxially arranged with the first screw rod, and the rod of the second bolt to be installed can pass through the second avoidance hole.

Optionally, the limiting member further includes a first jacking block, the first jacking block includes a connected first limiting portion and a first mounting portion, the diameter of the first limiting portion is larger than the diameter of the first mounting portion, the first jacking block also includes a first through hole passing through the first limiting portion and the first mounting portion, the first through hole is coaxial with the first escape hole, the first mounting portion is screwed to the first avoiding hole, the end of the first mounting portion extends out of the first avoiding hole, and can abut against the first bushing, and the first limiting portion abuts connected to the end surface of the first spacer away from the first screw;

The limiting member also includes a second top block, the second jacking block includes a connected second limiting portion and a second mounting portion, the diameter of the second limiting portion is greater than the diameter of the second mounting portion, the second jacking block also includes a second through hole passing through the second limiting portion and the second mounting portion, the second through hole is coaxial with the second escape hole, the second mounting portion is screwed to the second avoiding hole, the end of the second mounting portion extends out of the second avoiding hole, and can abut against the second bushing, and the second limiting portion abuts against the second escape hole. The second spacer is away from the end surface of the second screw rod.

Optionally, a first positioning hole is opened through the bottom of the first positioning groove, a first connecting hole is opened on the first spacer corresponding to the first positioning hole, and a first connecting bolt is screwed to the first positioning hole and the first connecting hole in turn;

A second positioning hole is opened through the bottom of the second positioning groove, and a second connecting hole is opened on the second pad corresponding to the second positioning hole, and the second connecting bolts are screwed to the second positioning hole and the second connecting hole in turn.

Optionally, a first adapter sleeve is also included, the first screw rod includes a first limit head, a first threaded section and a first connecting head connected in sequence, the first threaded section is threadedly connected to the first connecting part, the first adapter sleeve is movably connected to the first connecting head, and can be matched with the head of the first bolt to be installed;

It also includes a second adapter sleeve, the second screw rod includes a second limit head, a second threaded section and a second connecting head connected in sequence, the second threaded section is threadedly connected to the second connecting part, the second adapter sleeve is movably connected to the second connecting head, and can be matched with the head of the second bolt to be installed.

Optionally, the first adapter sleeve includes a connected first adapter portion and a first adapter portion, the first adapter portion is movably sleeved on the outside of the first connector, and the first adapter portion can cooperate with the head of the first bolt to be installed;

The second adapter sleeve includes a connected second adapter portion and a second adapter portion, the second adapter portion is movably sleeved outside the second connection head, and the second adapter portion can cooperate with the head of the second bolt to be installed.

Optionally, a first cavity is provided in the first transition part, and a first threaded hole communicating with the first cavity is opened on the first transition part, and the first screw rod also includes a first transition section disposed between the first threaded section and the first connection head, the diameter of the first transition section is smaller than the diameter of the first connection head, the first connection head can be threadedly connected to the first threaded hole, and the first connection head can also extend into the first cavity;

A second cavity is provided in the second adapter portion, and a second threaded hole communicating with the second cavity is provided on the second adapter portion. The second screw rod also includes a second transition section arranged between the second threaded section and the second connector.

Optionally, the diameter of the first limiting head is greater than the diameter of the first threaded segment, and the diameter of the first threaded segment is not smaller than the diameter of the first connecting head;

The diameter of the second limiting head is larger than the diameter of the second thread segment, and the diameter of the second thread segment is not smaller than the diameter of the second connecting head.

Optionally, the bracket is U-shaped, C-shaped or V-shaped.

The beneficial effects of the utility model:

The bolt installation tool provided by the utility model includes a bracket, a first screw rod, a second screw rod and a limiting member. When in use, first screw the first screw rod and the second screw rod to a suitable length, then make the head of the first bolt to be installed cooperate with the end of the first screw rod, and the head of the second bolt to be installed cooperate with the end of the second screw rod; finally, continue to screw the first screw rod and the second screw rod until the first bolt to be installed and the second bolt to be installed are respectively screwed to the installation position. During the installation process of the two groups of bolts, the first screw and the second screw move towards each other, the first bushing matched with the first bolt to be installed and the second bushing matched with the second bolt to be installed will be limited by the stopper to prevent them from moving, thereby successfully completing the one-time installation of two sets of facing bolts, the operation is simple, and the difficulty of bolt installation caused by heavy parts and inconvenient coordination is greatly reduced, and the installation quality of the bolts is improved. At the same time, the overall structure of the bolt installation tool is detachable, which is convenient for installation and operation in a small space, and it is convenient for disassembly after the two sets of bolts are installed.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to the content of the embodiments of the present invention and these accompanying drawings without creative work.

Fig. 1 is the structural representation of the bolt installation tool that the utility model embodiment provides;

Fig. 2 is an exploded view of the bolt installation tool provided by the embodiment of the present invention;

Fig. 3 is a side view of the bolt installation tool provided by the embodiment of the present invention;

Fig. 4 is a cross-sectional view of the first screw and the first adapter sleeve provided by the embodiment of the present invention;

Fig. 5 is a sectional view of the bracket provided by the embodiment of the present invention;

Fig. 6 is a cross-sectional view of the first pad provided by the embodiment of the present invention.

In the picture:

1. Bracket; 11. First connecting part; 12. Second connecting part; 13. First positioning groove; 131. First positioning hole; 14. Second positioning groove; 141. Second positioning hole;

2. The first screw; 21. The first limit head; 22. The first thread section; 23. The first connector; 24. The first transition section;

3. The second screw;

4. Limiting piece; 41. First spacer; 411. First avoidance hole; 412. First connecting hole; 42. Second spacer; 43. First jacking block; 431. First limiting part; 432. First installation part; 433. First through hole; 44. Second jacking block; 45. First connecting bolt; 46. Second connecting bolt;

51. The first adapter sleeve; 511. The first adapter part; 5111. The first cavity; 5112. The first threaded hole; 512. The first adapter part; 52. The second adapter sleeve.

Detailed ways

The technical scheme of the utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments.

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

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 represents selected embodiments of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the utility model, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the utility model product is used, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

In the description of the present utility model, it should also be noted that, unless otherwise specified and limited, the terms "setting" 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. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

In the present invention, unless otherwise specified and limited, the first feature being "on" or "under" the second feature may include that the first and second features are in direct contact, and may also include that the first and second features are not in direct contact but are in contact with another feature between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, but should not be construed as limiting the present utility model.

This embodiment provides a bolt installation tool, which is mainly used for installation of two groups of facing bolts. As shown in FIGS. 1-3 , the bolt installation tool includes a bracket 1 , a first screw 2 , a second screw 3 and a limiting member 4 .

Wherein, the bracket 1 has a first connecting portion 11 and a second connecting portion 12 oppositely arranged. The first screw 2 is threadedly connected to the first connecting portion 11 , and the end of the first screw 2 can cooperate with the head of the first bolt to be installed. The second screw rod 3 is threadedly connected with the second connecting portion 12, and the end of the second screw rod 3 can cooperate with the head of the second bolt to be installed. The stopper 4 is detachably connected to the bracket 1, and when the first screw 2 and the second screw 3 move toward each other, the stopper 4 is used to limit the movement of the first bushing matched with the first bolt to be installed and the second bushing matched with the second bolt to be installed.

That is to say, when the bolt installation tool is used, the first screw 2 and the second screw 3 are respectively screwed to a suitable length, and then the head of the first bolt to be installed is matched with the end of the first screw 2, and the head of the second bolt to be installed is matched with the end of the second screw 3; finally, the first screw 2 and the second screw 3 are continued to be screwed until the first bolt to be installed and the second bolt to be installed are respectively screwed to the installation position. During the installation process of the two groups of bolts, the first screw 2 and the second screw 3 move towards each other, the first bushing matched with the first bolt to be installed and the second bushing matched with the second bolt to be installed will be limited by the stopper 4 to prevent them from moving, thus successfully completing the one-time installation of two sets of facing bolts, the operation is simple, and the difficulty of bolt installation due to the heavy components and the inconvenience of mutual coordination is greatly reduced, and the installation quality of the bolts is improved. At the same time, the overall structure of the bolt installation tool is detachable, which is convenient for installation and operation in a small space, and it is convenient for disassembly after the two sets of bolts are installed.

Continuing to refer to FIG. 1 and FIG. 2 , the bracket 1 further includes a support portion for connecting the first connection portion 11 and the second connection portion 12 . In this embodiment, the supporting part, the first connecting part 11 and the second connecting part 12 are integrally structured. Further, the thickness of the first connection part 11 and the thickness of the second connection part 12 are both greater than the thickness of the supporting part, so as to ensure the structural strength.

Specifically, as shown in FIG. 2 and FIG. 5 , in this embodiment, the bracket 1 is U-shaped, which can avoid installed parts during operation and make full use of the space. Optionally, the bracket 1 may also be C-shaped or V-shaped.

As shown in FIG. 1 and FIG. 2 , the limiting member 4 includes a first spacer 41 and a second spacer 42 arranged at intervals. The first spacer 41 is opposite to the first connecting portion 11 , and the first spacer 41 is used to abut against the first bushing matched with the first bolt to be installed. The second spacer 42 is opposite to the second connecting portion 12 , and the second spacer 42 is used to abut against the second bushing matched with the second bolt to be installed. By changing the distance between the first spacer 41 and the second spacer 42, the bolt installation tool can be adapted to the installation of two sets of bolts with different installation distances, thereby improving applicability.

Specifically, referring to FIG. 2 , the end surface of the first spacer 41 facing the first screw rod 2 is used to abut against the side surface of the first bushing away from the first bolt to be installed. A first avoidance hole 411 is opened through the first spacer 41 . The first avoidance hole 411 is coaxially arranged with the first screw rod 2 . Turning the first screw rod 2 can drive the first bolt to be installed to move linearly along the axial direction, and the first escape hole 411 is used to avoid the rod portion of the first bolt to be installed. Correspondingly, the end surface of the second pad 42 facing the second screw rod 3 is used to abut against the side surface of the second bushing away from the second bolt to be installed. A second avoidance hole is provided through the second spacer 42 . The second avoidance hole is coaxially arranged with the first screw rod 2 . Turning the second screw rod 3 can drive the second bolt to be installed to move linearly along the axial direction, and the second avoidance hole is used to avoid the rod portion of the second bolt to be installed.

More specifically, referring to FIGS. 1-3 , the limiting member 4 further includes a first jacking block 43 and a second jacking block 44 . The first top block 43 includes a connected first limiting portion 431 and a first mounting portion 432. The first jacking block 43 also includes a first through hole 433 passing through the first limiting portion 431 and the first mounting portion 432. The first through hole 433 is coaxial with the first escape hole 411, and the first mounting portion 432 is screwed to the first escape hole 411. The end of the first mounting portion 432 protrudes from the first escape hole 411 and can abut against the first bushing, and the first limiting portion 431 abuts against the end surface of the first spacer 41 away from the first screw 2 . The diameter of the first limiting portion 431 is larger than the diameter of the first installation portion 432 to play a role of limiting. A rubber washer is pasted on the end surface of the first mounting portion 432 protruding from the first escape hole 411 to avoid abrasion.

Correspondingly, the second jacking block 44 has the same structure and function as the first jacking block 43 . The second top block 44 includes a connected second limiting portion and a second mounting portion. The diameter of the second limiting portion is greater than the diameter of the second mounting portion. The second jacking block 44 also includes a second through hole passing through the second limiting portion and the second mounting portion. The second through hole is coaxial with the second avoidance hole.

More specifically, as shown in FIGS. 1 and 3 , in this embodiment, the first bolts to be installed and the second bolts to be installed are two groups of facing bolts coaxially arranged at the junction of the wing inner flap compartment box section assembly and the inner flap compartment cover assembly, then the first screw rod 2, the first escape hole 411, the second screw rod 3 and the second escape hole are arranged coaxially.

Optionally, as shown in FIG. 2 , FIG. 3 and FIG. 5 , a first positioning groove 13 and a second positioning groove 14 are provided on the bracket 1 . The first pad 41 can be inserted into the first positioning slot 13 , and the second pad 42 can be inserted into the second positioning slot 14 . The first spacer 41 and the second spacer 42 are plugged and connected with the bracket 1 for easy installation and replacement.

Preferably, referring to FIG. 5 and FIG. 6 , a first positioning hole 131 is opened through the bottom of the first positioning groove 13 , and a first connection hole 412 is opened at a position corresponding to the first positioning hole 131 on the first spacer 41 . The first connecting bolt 45 is screwed to the first positioning hole 131 and the first connecting hole 412 in sequence, and the first connecting bolt 45 plays a locking role on the first spacer 41 . Similarly, a second positioning hole 141 is opened through the bottom of the second positioning groove 14 , and a second connection hole is opened at a position corresponding to the second positioning hole 141 on the second spacer 42 . The second connecting bolt 46 is screwed to the second positioning hole 141 and the second connecting hole in turn, and the second connecting bolt 46 plays a locking role on the second spacer 42 .

As shown in FIGS. 1-4 , in this embodiment, the bolt installation tool further includes a first adapter sleeve 51 and a second adapter sleeve 52 . The first adapter sleeve 51 is connected to the end of the first screw rod 2 and can be matched with the head of the first bolt to be installed. The second adapter sleeve 52 is connected to the end of the second screw rod 3 and can be matched with the head of the second bolt to be installed.

Specifically, the first screw rod 2 includes a first limiting head 21 , a first thread segment 22 and a first connecting head 23 connected in sequence. The first threaded section 22 is threadedly connected to the first connecting portion 11 , and the first adapter sleeve 51 is movably connected to the first connecting head 23 . The first adapter sleeve 51 can swing at a certain angle on the first screw rod 2 , thereby improving the compatibility between the first adapter sleeve 51 and the bolt parts to be installed. Correspondingly, the second screw rod 3 includes a second limiting head, a second thread segment and a second connecting head connected in sequence. The second threaded section is threadedly connected to the second connecting portion 12 , and the second adapter sleeve 52 is movably connected to the second connecting head. The second adapter sleeve 52 can swing at a certain angle on the second screw rod 3 , thereby improving the compatibility between the second adapter sleeve 52 and the bolt parts to be installed.

More specifically, referring to FIG. 4 , the first adapter sleeve 51 includes a connected first adapter portion 511 and a first adapter portion 512 . The first connecting portion 511 is movably sleeved on the outside of the first connecting head 23 , and the first fitting portion 512 can cooperate with the head of the first bolt to be installed. The first adapting portion 512 is configured according to the head characteristics of the first bolt to be installed, so as to adapt to different bolts to be installed. A first cavity 5111 is disposed in the first transfer portion 511 , and a first threaded hole 5112 communicating with the first cavity 5111 is defined in the first transfer portion 511 . The first screw rod 2 also includes a first transition section 24 disposed between the first threaded section 22 and the first connecting head 23, the diameter of the first transition section 24 is smaller than the diameter of the first connecting head 23, the first connecting head 23 can be threadedly connected with the first threaded hole 5112, and the first connecting head 23 can also extend into the first cavity 5111. During installation, the first connector 23 is screwed into the first threaded hole 5112 first, and then the first connector 23 is continuously screwed until the first connector 23 is completely inserted into the first cavity 5111 . Since the diameter of the first transition section 24 is smaller than the diameter of the first connecting head 23, when the first connecting head 23 extends into the first cavity 5111, there is a large gap at the connection between the first threaded hole 5112 and the first transition section 24, so that the first adapter part 511 can swing at a certain angle at the end of the first screw rod 2.

Correspondingly, the connection structure between the second adapter sleeve 52 and the second screw rod 3 is the same as the connection structure between the first adapter sleeve 51 and the first screw rod 2 . The second adapter sleeve 52 includes a connected second adapter portion and a second adapter portion. The second adapter part is movably sleeved on the outside of the second connecting head, and the second adapter part can cooperate with the head of the second bolt to be installed. A second cavity is arranged in the second transition part, and a second threaded hole communicating with the second cavity is opened on the second transition part. The second screw rod 3 also includes a second transition section arranged between the second threaded section and the second connection head, the diameter of the second transition section is smaller than the diameter of the second connection head, the second connection head can be threadedly connected with the second threaded hole, and the second connection head can also extend into the second cavity.

Optionally, continue to refer to FIG. 4 , the diameter of the first limiting head 21 is larger than the diameter of the first thread segment 22 to limit the first screw 2 . The diameter of the first threaded segment 22 is greater than or equal to the diameter of the first connecting head 23 , so that the first connecting head 23 passes through the threaded hole on the first connecting portion 11 . Likewise, the diameter of the second limiting head is greater than the diameter of the second thread segment, and the diameter of the second thread segment is greater than or equal to the diameter of the second connecting head.

Apparently, the above-mentioned embodiments of the present utility model are only examples for clearly illustrating the present utility model, rather than limiting the implementation manner of the present utility model. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the utility model shall be included in the protection scope of the claims of the utility model.

Claims (10)

1. Bolt installation tool, is characterized in that, comprises: The bracket (1) has a first connecting portion (11) and a second connecting portion (12) disposed opposite to each other; The first screw (2) is threadedly connected to the first connecting portion (11), and the end of the first screw (2) can be matched with the head of the first bolt to be installed; The second screw rod (3) is threadedly connected with the second connecting part (12), and the end of the second screw rod (3) can cooperate with the head of the second bolt to be installed; The limiter (4) is detachably connected to the bracket (1), and when the first screw (2) and the second screw (3) move toward each other, the limiter (4) is used to limit the movement of the first bush that cooperates with the first bolt to be installed and the movement of the second bush that cooperates with the second bolt to be installed. 2. The bolt installation tool according to claim 1, characterized in that, the limiting member (4) comprises a first spacer (41) and a second spacer (42) arranged at intervals, the first spacer (41) is facing the first connecting portion (11), the second spacer (42) is facing the second connecting portion (12), the bracket (1) has a first positioning groove (13) and a second positioning groove (14), and the first spacer (41) can be inserted into the first positioning groove ( 13), the second pad (42) can be inserted into the second positioning groove (14). 3. The bolt installation tool according to claim 2, characterized in that, the end surface of the first spacer (41) facing the first screw (2) is used to abut against the side of the first bushing away from the first bolt to be installed, a first avoidance hole (411) is opened through the first spacer (41), the first avoidance hole (411) is coaxially arranged with the first screw rod (2), and the first avoidance hole (411) can be passed through the rod portion of the first bolt to be installed; The end surface of the second pad (42) facing the second screw (3) is used to abut against the side of the second bushing away from the second bolt to be installed, and a second avoidance hole is opened through the second pad (42), the second avoidance hole is coaxially arranged with the first screw rod (2), and the rod portion of the second bolt to be installed can pass through the second avoidance hole. 4. The bolt installation tool according to claim 3, characterized in that, the limiting member (4) further comprises a first jacking block (43), the first jacking piece (43) comprises a connected first limiting portion (431) and a first mounting portion (432), the diameter of the first limiting portion (431) is greater than the diameter of the first mounting portion (432), and the first jacking block (43) also includes a first hole penetrating through the first limiting portion (431) and the first mounting portion (432). A through hole (433), the first through hole (433) is coaxial with the first escape hole (411), the first installation part (432) is threadedly connected to the first avoidance hole (411), the end of the first installation part (432) protrudes from the first avoidance hole (411), and can abut against the first bushing, and the first stopper part (431) abuts against the end surface of the first pad (41) away from the first screw rod (2); The stopper (4) also includes a second top block (44), the second top block (44) includes a connected second stopper and a second installation part, the diameter of the second stopper is larger than the diameter of the second installation part, the second top block (44) also includes a second through hole passing through the second stopper and the second installation part, the second throughhole is coaxial with the second escape hole, the second installment part is threadedly connected to the second escape hole, and the end of the second installment extends out of the second escape hole and can be connected to the second escape hole. The second bushing abuts, and the second limiting portion abuts against the end surface of the second spacer (42) away from the second screw rod (3). 5. The bolt installation tool according to claim 2, characterized in that, a first positioning hole (131) is opened through the bottom of the first positioning groove (13), a first connecting hole (412) is provided on the first pad (41) corresponding to the first positioning hole (131), and a first connecting bolt (45) is screwed to the first positioning hole (131) and the first connecting hole (412) in turn; The groove bottom of the second positioning groove (14) runs through a second positioning hole (141), and a second connection hole is provided at a position corresponding to the second positioning hole (141) on the second spacer (42), and a second connection bolt (46) is screwed to the second positioning hole (141) and the second connection hole in turn. 6. The bolt installation tool according to claim 1, further comprising a first adapter sleeve (51), the first screw rod (2) comprising a first stopper (21), a first threaded section (22) and a first connecting head (23) connected in sequence, the first threaded section (22) is threadedly connected to the first connecting portion (11), the first adapter sleeve (51) is movably connected to the first connecting head (23), and can cooperate with the head of the first bolt to be installed; It also includes a second adapter sleeve (52), the second screw rod (3) includes a second limit head, a second threaded segment and a second connecting head connected in sequence, the second threaded segment is threadedly connected to the second connecting portion (12), the second adapter sleeve (52) is movably connected to the second connecting head, and can be matched with the head of the second bolt to be installed. 7. The bolt installation tool according to claim 6, characterized in that, the first adapter sleeve (51) comprises a connected first adapter portion (511) and a first adapter portion (512), the first adapter portion (511) is movably sleeved outside the first connector (23), and the first adapter portion (512) can cooperate with the head of the first bolt to be installed; The second adapter sleeve (52) includes a connected second adapter portion and a second adapter portion, the second adapter portion is movably sleeved outside the second connector, and the second adapter portion can cooperate with the head of the second bolt to be installed. 8. The bolt installation tool according to claim 7, characterized in that, a first cavity (5111) is provided in the first transfer portion (511), and a first threaded hole (5112) communicating with the first cavity (5111) is provided on the first transfer portion (511), and the first screw rod (2) further includes a first transition segment (24) arranged between the first thread segment (22) and the first connector (23), the first transition segment (24 ) is smaller than the diameter of the first connector (23), the first connector (23) can be threadedly connected to the first threaded hole (5112), and the first connector (23) can also extend into the first cavity (5111); A second cavity is provided in the second transition part, and a second threaded hole communicating with the second cavity is provided on the second transition part. The second screw (3) also includes a second transition section disposed between the second threaded section and the second connection head. The diameter of the second transition section is smaller than the diameter of the second connection head. The second connection head can be threadedly connected to the second threaded hole, and the second connection head can also extend into the second cavity. 9. The bolt installation tool according to claim 6, characterized in that, the diameter of the first limiting head (21) is larger than the diameter of the first threaded segment (22), and the diameter of the first threaded segment (22) is not smaller than the diameter of the first connecting head (23); The diameter of the second limiting head is larger than the diameter of the second thread segment, and the diameter of the second thread segment is not smaller than the diameter of the second connecting head. 10. The bolt installation tool according to any one of claims 1-9, characterized in that, the bracket (1) is U-shaped, C-shaped or V-shaped.