CN111673663A

CN111673663A - Special slit spanner for assembling variable beam assembling nodes of assembly building

Info

Publication number: CN111673663A
Application number: CN202010449592.0A
Authority: CN
Inventors: 袁慧初
Original assignee: Zhuji Jingming Road Engineering Co ltd
Current assignee: Zhuji Jingming Road Engineering Co ltd
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2020-09-18

Abstract

The invention relates to the field of wrenches, in particular to a special slit wrench for assembling a variable beam assembly node of an assembly building, which comprises: a main body; the sliding parts are uniformly distributed around the main body and are in sliding connection with the main body, and the sliding track of the sliding parts is superposed with the axis of the main body; the non-working part of the radial driver is fixedly connected with the main body, and the working part of the radial driver is in transmission connection with the sliding part; a holding part, one end of which is fixedly connected with the main body; and the extending part is connected with the holding part in a sliding manner, and the sliding direction of the extending part is parallel to the length direction of the holding part. The invention has wide working range, can adjust the position of the clamping nut or the nut in advance and complete self-locking, and is suitable for being used in the environments such as the inside of a slit and the like.

Description

Special slit spanner for assembling variable beam assembling nodes of assembly building

Technical Field

The invention relates to the field of wrenches, in particular to a special slit wrench for assembling a variable beam assembling node of an assembly building.

Background

The spanner is a common mounting and dismounting tool, and utilizes the lever principle to twist and turn bolts, screws, nuts and other hand tools for tightly holding the opening or trepanning firmware of the bolts or the nuts by threads, the spanner is generally provided with the opening or trepanning for clamping the bolts or the nuts at one end or two ends of a handle part, when in use, external force is applied to the handle part along the thread rotating direction, so that the bolts or the nuts can be twisted, and the torque spanner is mainly applied to industries and departments of spaceflight, aviation, ships, automobiles, engines, generators, internal combustion engines, electric power, electronics, chemical engineering and the like.

There are certain drawbacks to the use of wrenches in slits:

1. because the size of the nut and the screw assembled on each node is different, wrenches with different calibers need to be carried, and meanwhile, the adjustable wrench is arranged, so that the nut is not tightly fixed and is easy to slip;

2. if the nut is corroded for a long time, a common wrench needs to spend a large amount of effort to screw, and time and labor are wasted.

Disclosure of Invention

The invention aims to solve the technical problem of providing a special slit wrench for assembling a variable beam assembly node of an assembly building, which has a wide working range, can adjust the part for clamping a nut or a nut in advance and complete self-locking, and is suitable for being used in environments such as the inside of a slit and the like.

In order to solve the technical problems, the invention provides the following technical scheme:

a special slit spanner for assembling a variable beam assembling node of an assembly building comprises:

a main body;

the sliding parts are uniformly distributed around the main body and are in sliding connection with the main body, and the sliding track of the sliding parts is superposed with the axis of the main body;

the non-working part of the radial driver is fixedly connected with the main body, and the working part of the radial driver is in transmission connection with the sliding part;

a holding part, one end of which is fixedly connected with the main body;

and the extending part is connected with the holding part in a sliding manner, and the sliding direction of the extending part is parallel to the length direction of the holding part.

As an assembly building variable beam assembly node equipment special slot spanner's an preferred scheme, the main part is the ring shape, is provided with a plurality of sliding sleeves of surrounding its axis equipartition on the main part, sliding sleeve and sliding part sliding connection, sliding sleeve and sliding part's contact site are the rectangle through-hole.

As a preferred scheme of assembling the special slot spanner for the variable beam assembling node of the assembly building, the number of the sliding sleeves is three, and the number of the sliding parts is three.

As a preferred scheme of assembling the special slit wrench for the variable beam assembly node of the assembly building, the sliding part comprises a sliding block and a working block, the sliding block and the working block are integrated, the sliding block is in sliding connection with the sliding sleeve, the working part of the radial driver is in transmission connection with the sliding part, the working block is positioned in the main body, and one end, facing the axis of the main body, of the working block is matched with the outer peripheral surface of a nut or a nut.

As a preferred scheme of assembling the special slit wrench for the variable beam assembly node of the assembly building, the radial driver comprises a fixed support, a moving block, a connecting rod mechanism and a linear driver, wherein the fixed support is arranged on the outer side of the main body and fixedly connected with the main body, the moving block is arranged on the outer side of the fixed support and positioned on the axis of the main body, each sliding part is in transmission connection with the moving block through one connecting rod mechanism, the linear driver is fixedly connected with the fixed support, the linear driver is in transmission connection with the moving block, and the output direction of the moving block coincides with the axis of the main body.

As an optimal scheme of assembling the special slit wrench for the variable beam assembly node of the building, the connecting rod mechanism comprises a first hinge, a plurality of hinged rods and a second hinge, the first hinge, the hinged rods and the second hinge are in one-to-one correspondence, the first hinges are fixedly connected with the moving blocks and are uniformly distributed around the moving blocks, each second hinge is in one-to-one correspondence with each sliding part and is fixedly connected with the sliding parts, and two ends of each hinged rod are hinged with the first hinge and the second hinge respectively.

As an assembly building variable roof beam assembly node equipment special slit spanner's an preferred scheme, the fixed bolster is including the connecting rod, the fixed plate, dodge the opening, the fixed plate sets up in the outside of main part, the axis coincidence of fixed plate and main part, a plurality of connecting rods encircle the fixed plate equipartition and the both ends of connecting rod respectively with main part, fixed plate fixed connection, sharp driver and fixed plate fixed connection are provided with the opening of dodging that is used for dodging the hinge bar on the fixed plate.

As an optimal selection scheme of assembling the special slit spanner for the variable beam assembly node of the building, the linear driver comprises a bearing, a threaded rod and a hexagonal rod, the outer ring of the bearing is fixedly connected with a fixing plate, the axis of the bearing is overlapped with the axis of a main body, one end of the threaded rod is fixedly connected with the inner ring of the bearing, the threaded rod extends towards the direction away from the main body, the hexagonal rod which is coaxial and fixedly connected with the threaded rod is arranged at one end, away from the main body, of the threaded rod, a moving block is sleeved on the threaded rod, and the moving block is in threaded connection with the.

As a preferred scheme of assembling the special slit wrench for the variable beam assembly node of the assembly building, the holding part is in a long strip shape, a groove extending along the length direction of the holding part is arranged inside the holding part, the groove penetrates through one end, far away from the main body, of the holding part, reinforcing ribs located on two sides of the groove are arranged on the holding part, the extending part comprises an extending rod, the extending rod is connected with the groove in a sliding mode, one end, far away from the main body, of the extending rod is located on the outer side of the holding part, a pin is fixedly installed at one end, far away from the main body, of the extending rod.

As a preferable scheme of the slit wrench special for assembling the assembly node of the variable beam of the assembly building, a bolt is installed at one end of the extension rod close to the main body, the rod part of the bolt is in threaded connection with the extension rod, and the cap part of the bolt abuts against the surface of the holding part.

Compared with the prior art, the invention has the beneficial effects that:

the main body is used for installing the sliding part, the radial driver and the holding part, the sliding part can move radially relative to the axis of the main body under the driving of the radial driver, the sliding part can clamp the nut or the nut when moving inwards, the nut or the nut can be loosened when moving outwards, the holding part is used for holding, so that a worker can rotate the main body through the holding part, the main body drives the sliding part to clamp the nut or the nut to rotate, the extending part is used for sliding outwards, so that the length of the part which can be held is prolonged, the torque is increased or the working range of the worker is prolonged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a first perspective view of a special slot wrench for assembling a variable beam assembly joint of an assembly building according to an embodiment of the present invention;

FIG. 2 is a second perspective view of a special slot wrench for assembling a variable beam assembly joint of an assembly building according to an embodiment of the present invention;

FIG. 3 is a side view of an embodiment of a special slot wrench for assembling a variable beam assembly node of an assembly building according to the present invention;

FIG. 4 is a cross-sectional view at section A-A of FIG. 3;

FIG. 5 is a perspective sectional view at section A-A of FIG. 3;

FIG. 6 is a top view of an embodiment of a special slot wrench for assembling a variable beam assembly node of an assembly building according to the present invention;

FIG. 7 is a cross-sectional view at section B-B of FIG. 6;

FIG. 8 is a perspective sectional view at section B-B of FIG. 6;

FIG. 9 is a perspective view of a partial structure of a special slot wrench for assembling a variable beam assembly node of an assembly building according to an embodiment of the present invention;

FIG. 10 is an enlarged view of a portion of FIG. 9 at C;

the reference numbers in the figures are:

1-a body; 1 a-a sliding sleeve;

2-a sliding part; 2 a-a slider; 2 b-a work block;

3-a radial drive; 3 a-a fixed support; 3a 1-connecting rod; 3a 2-dead plate; 3a3 — escape opening; 3 b-a moving block; 3 c-a linkage mechanism; 3c 1-first hinge; 3c 2-hinge bar; 3c 3-second hinge; 3 d-linear drive; 3d 1-bearing; 3d 2-threaded rod; 3d 3-hexagonal rod;

4-a grip portion; 4 a-a groove; 4 b-reinforcing ribs;

5-an extension; 5 a-an extension pole; 5 b-a pin; 5 c-a rubber sleeve; 5 d-bolt.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and the specific meanings of the terms may be understood by those skilled in the art according to specific situations.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being fixed or detachable or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 10, the special slot wrench for assembling the variable beam assembling node of the assembling building comprises:

a main body 1;

the sliding parts 2 are uniformly distributed around the main body 1, the sliding parts 2 are connected with the main body 1 in a sliding mode, and the sliding track of each sliding part 2 is overlapped with the axis of the main body 1;

a radial driver 3, the non-working part of which is fixedly connected with the main body 1 and the working part of which is in transmission connection with the sliding part 2;

a grip portion 4 having one end fixedly connected to the main body 1;

and an extension part 5 connected with the holding part 4 in a sliding way, wherein the sliding direction of the extension part 5 is parallel to the length direction of the holding part 4.

The main body 1 is used for installing the sliding part 2, the radial actuator 3 and the holding part 4, the sliding part 2 can move radially relative to the axis of the main body 1 under the driving of the radial actuator 3, the sliding part 2 can clamp a nut or a nut when moving inwards, the sliding part 2 can loosen the nut or the nut when moving outwards, the holding part 4 is used for holding, so that a worker can rotate the main body 1 through the holding part 4, the main body 1 drives the sliding part 2 to clamp the nut or the nut to rotate, the extending part 5 is used for sliding outwards, the length of a part which can be held is prolonged, and further the torque is increased or the working range of the worker is prolonged.

Specifically, main part 1 is the annular shape, is provided with a plurality of sliding sleeves 1a around its axis equipartition on the main part 1, sliding sleeve 1a and sliding part 2 sliding connection, and sliding sleeve 1a is the rectangle through-hole with the contact position of sliding part 2.

The plurality of sliding sleeves 1a are used for guiding the sliding part 2 to slide in the radial direction relative to the axis of the main body 1, and the contact part between the sliding sleeves 1a and the sliding part 2 is a rectangular through hole, so that the sliding part 2 and the sliding sleeves 1a cannot rotate relatively, and the condition that the working part of the sliding part 2 cannot be matched with a nut or a nut due to the fact that the sliding part 2 rotates in the sliding sleeves 1a is avoided.

Specifically, the sliding sleeves 1a have three in total, and the sliding portions 2 have three in total.

The outer peripheral surfaces of the nut and the nut are generally hexagonal prism surfaces, so that the most suitable number of the sliding portions 2 is three, and the sliding sleeves 1a and the sliding portions 2 are the same in number.

Specifically, the sliding part 2 comprises a sliding block 2a and a working block 2b, the sliding block 2a and the working block 2b are an integral piece, the sliding block 2a is connected with the sliding sleeve 1a in a sliding manner, the working part of the radial driver 3 is connected with the sliding part 2 in a transmission manner, the working block 2b is located inside the main body 1, and one end, facing the axis of the main body 1, of the working block 2b is matched with the outer peripheral surface of a nut or a nut.

The axial line radial inward movement of the work portion drive slide portion 2 of radial driver 3 for main part 1, slider 2a drives work piece 2b and moves towards the axial line of main part 1 together, thereby work piece 2b is coincide with the outer peripheral face of nut or nut and presss from both sides tight nut or nut, the staff is through the main part 1 of the rotatory of control portion 4 or extension 5, thereby make main part 1 drive work piece 2b centre gripping nut or nut rotatory, play the purpose of loosening or screwing up nut, nut.

Specifically, the radial actuator 3 includes a fixed bracket 3a, a moving block 3b, a link mechanism 3c, and a linear actuator 3d, the fixed bracket 3a is disposed on the outer side of the main body 1 and is fixedly connected with the main body 1, the moving block 3b is disposed on the outer side of the fixed bracket 3a and is located on the axis of the main body 1, each sliding portion 2 is in transmission connection with the moving block 3b through one link mechanism 3c, the linear actuator 3d is fixedly connected with the fixed bracket 3a, the linear actuator 3d is in transmission connection with the moving block 3b, and the output direction of the moving block 3b coincides with the axis of the main body 1.

The linear driver 3d is used for driving the moving block 3b to move along the axis of the main body 1, when the moving block 3b is close to the main body 1, the moving block 3b drives the sliding portion 2 to be radially far away from the main body 1 through the connecting rod mechanism 3c, when the moving block 3b is far away from the main body 1, the moving block 3b drives the sliding portion 2 to be radially close to the main body 1 through the connecting rod mechanism 3c, and the linear driver 3d can be self-locked, so that the relative distance between the moving block 3b and the main body 1 can be fixed and unchanged, and further the relative distance between the working portion of the sliding portion 2 and the.

Specifically, the link mechanism 3c includes a plurality of first hinges 3c1, a plurality of hinge rods 3c2, and a plurality of second hinges 3c3, the first hinges 3c1, the hinge rods 3c2, and the second hinges 3c3 are all in one-to-one correspondence, the plurality of first hinges 3c1 are fixedly connected to the moving block 3b and are uniformly distributed around the moving block 3b, each of the second hinges 3c3 is in one-to-one correspondence with each of the sliding portions 2 and is fixedly connected to the corresponding sliding portion, and two ends of the hinge rods 3c2 are respectively hinged to the first hinges 3c1 and the second hinges 3c 3.

The moving block 3b, the first hinge 3c1, the hinge rod 3c2, the second hinge 3c3 and the slide block 2a are combined into an umbrella-shaped structure; when the moving block 3b moves in a direction away from the main body 1, the umbrella-shaped structure is retracted, and the sliding part 2 moves in a direction close to the main body 1; when the moving block 3b moves in a direction approaching the main body 1, the umbrella structure is opened, and the sliding portion 2 moves in a direction away from the main body 1.

Specifically, the fixed bracket 3a includes a connecting rod 3a1, a fixed plate 3a2 and an avoidance opening 3a3, the fixed plate 3a2 is disposed outside the main body 1, the fixed plate 3a2 coincides with the axis of the main body 1, the connecting rods 3a1 are uniformly distributed around the fixed plate 3a2, two ends of the connecting rod 3a1 are respectively fixedly connected with the main body 1 and the fixed plate 3a2, the linear actuator 3d is fixedly connected with the fixed plate 3a2, and the fixed plate 3a2 is provided with the avoidance opening 3a3 for avoiding the hinge rod 3c 2.

The connecting rod 3a1 is used for fixedly connecting the main body 1 and the fixing plate 3a2, the fixing plate 3a2 is used for mounting the linear actuator 3d, and the avoiding opening 3a3 is used for avoiding the hinge rod 3c 2.

Specifically, the linear actuator 3d includes a bearing 3d1, a threaded rod 3d2, a hexagonal rod 3d3, an outer ring of the bearing 3d1 is fixedly connected to the fixing plate 3a2, an axis of the bearing 3d1 coincides with an axis of the main body 1, one end of the threaded rod 3d2 is fixedly connected to an inner ring of the bearing 3d1, the threaded rod 3d2 extends in a direction away from the main body 1, the hexagonal rod 3d3 which is coaxial with and fixedly connected to the threaded rod 3d2 is disposed at one end of the threaded rod 3d2 away from the main body 1, the moving block 3b is sleeved on the threaded rod 3d2, and the moving block 3b is in threaded connection with the threaded rod 3d 2.

The threaded rod 3d2 is rotatably mounted on the fixed plate 3a2 through a bearing 3d1, the threaded rod 3d2 is arranged coaxially with the main body 1, the worker drives the threaded rod 3d2 to rotate through the hexagonal rod 3d3, and the movable block 3b is hinged to the sliding portion 2 through the plurality of link mechanisms 3c and cannot rotate the movable block 3b, so when the worker rotates the hexagonal rod 3d3 to drive the threaded rod 3d2 to rotate, the threaded rod 3d2 drives the movable block 3b to move along the axis of the main body 1 through the threads.

Specifically, the holding part 4 is in an elongated shape, a groove 4a extending along the length direction of the holding part 4 is formed in the holding part 4, the groove 4a penetrates through one end of the holding part 4, which is far away from the main body 1, a reinforcing rib 4b located on two sides of the groove 4a is arranged on the holding part 4, the extension part 5 comprises an extension rod 5a, the extension rod 5a is connected with the groove 4a in a sliding mode, one end, which is far away from the main body 1, of the extension rod 5a is located on the outer side of the holding part 4, a pin 5b is fixedly installed at one end, which is far away from the main body 1, of the extension rod 5a, and a rubber.

The groove 4a is used for installing the extension rod 5a, the extension rod 5a can be drawn out through the pin 5b, the reinforcing rib 4b is used for reinforcing the strength of the holding part 4 to prevent the holding part 4 from being broken, and the rubber sleeve 5c is used for wrapping the pin 5b to be convenient for a worker to hold.

Specifically, a bolt 5d is attached to one end of the extension rod 5a near the body 1, a rod portion of the bolt 5d is screwed to the extension rod 5a, and a cap portion of the bolt 5d abuts against a surface of the grip portion 4.

The bolt 5d can be rotated to make the cap portion abut against or separate from the grip portion 4, and after the worker pulls out or retracts the extension rod 5a, the worker can rotate the bolt 5d to make the cap portion abut against the grip portion 4, thereby fixing the position of the extension rod 5a by the friction force between the bolt 5d and the grip portion 4 so as not to slip out or retract itself.

The working principle of the invention is as follows:

the main body 1 is used for mounting the sliding portion 2, the radial actuator 3, and the grip portion 4.

The staff drives the threaded rod 3d2 to rotate through the hexagonal rod 3d3, and since the moving block 3b is hinged to the sliding portion 2 through the plurality of link mechanisms 3c, and the moving block 3b cannot rotate, when the staff rotates the hexagonal rod 3d3 to drive the threaded rod 3d2 to rotate, the threaded rod 3d2 drives the moving block 3b to move along the axis of the main body 1 through the threads.

The slider 2a drives the working block 2b to move together towards the axis of the main body 1, the working block 2b is matched with the outer peripheral surface of the nut or the nut so as to clamp the nut or the nut, the nut or the nut can be clamped when the working block 2b moves inwards, and the nut or the nut can be loosened when the working block 2b moves outwards.

After the sliding part 2 clamps the nut, the operator rotates the main body 1 through the holding part 4 or the extending part 5, so that the main body 1 drives the working block 2b to clamp the nut or the nut to rotate, and the purpose of loosening or tightening the nut and the nut is achieved.

The extension part 5 is used for sliding outwards, so that the length of a part which can be held is prolonged, and further, the moment is increased or the working range of a worker is prolonged.

It should be understood that the above-described embodiments are merely preferred embodiments of the invention and the technical principles applied thereto. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, such variations are within the scope of the invention as long as they do not depart from the spirit of the invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.

Claims

1. The utility model provides a special slit spanner of assembly building variable beam assembly node equipment which characterized in that, including: a main body (1); the sliding parts (2) are uniformly distributed around the main body (1), the sliding parts (2) are connected with the main body (1) in a sliding mode, and the sliding track of each sliding part (2) is overlapped with the axis of the main body (1); a radial driver (3), the non-working part of which is fixedly connected with the main body (1), and the working part of which is in transmission connection with the sliding part (2); a holding part (4) one end of which is fixedly connected with the main body (1); and the extending part (5) is connected with the holding part (4) in a sliding manner, and the sliding direction of the extending part (5) is parallel to the length direction of the holding part (4).

2. The special slit wrench for assembling the variable beam assembly joint of the assembly building according to claim 1, wherein the main body (1) is in a circular ring shape, the main body (1) is provided with a plurality of sliding sleeves (1 a) uniformly distributed around the axis of the main body, the sliding sleeves (1 a) are slidably connected with the sliding part (2), and the contact part between the sliding sleeves (1 a) and the sliding part (2) is a rectangular through hole.

3. The special slot wrench for assembling the variable beam assembling node of the assembly building according to claim 2, wherein the sliding sleeves (1 a) are three in total, and the sliding parts (2) are three in total.

4. The special slit wrench for assembling the variable beam assembly joint of the assembly building according to claim 1, wherein the sliding part (2) comprises a sliding block (2 a) and a working block (2 b), the sliding block (2 a) and the working block (2 b) are integrated, the sliding block (2 a) is connected with the sliding sleeve (1 a) in a sliding manner, the working part of the radial driver (3) is connected with the sliding part (2) in a transmission manner, the working block (2 b) is positioned inside the main body (1), and one end, facing the axis of the main body (1), of the working block (2 b) is matched with a nut or the outer peripheral surface of the nut.

5. The special slot wrench for assembling the variable beam assembling node of the assembling building according to claim 1, the radial drive device is characterized in that the radial drive device (3) comprises a fixed support (3 a), a moving block (3 b), a connecting rod mechanism (3 c) and a linear drive device (3 d), wherein the fixed support (3 a) is arranged on the outer side of the main body (1) and fixedly connected with the main body (1), the moving block (3 b) is arranged on the outer side of the fixed support (3 a) and located on the axis of the main body (1), each sliding part (2) is in transmission connection with the moving block (3 b) through one connecting rod mechanism (3 c), the linear drive device (3 d) is fixedly connected with the fixed support (3 a), the linear drive device (3 d) is in transmission connection with the moving block (3 b), and the output direction of the moving block (3 b) is overlapped with the axis of the main body (1).

6. The special slit wrench for assembling the variable beam assembly node of the assembly building according to claim 5, wherein the link mechanism (3 c) comprises a plurality of first hinges (3 c 1), a plurality of hinge rods (3 c 2), and a plurality of second hinges (3 c 3), the first hinges (3 c 1), the hinge rods (3 c 2), and the second hinges (3 c 3) are respectively corresponding to each other, the first hinges (3 c 1) are fixedly connected with the moving block (3 b) and uniformly distributed around the moving block (3 b), each second hinge (3 c 3) is corresponding to each sliding part (2) and fixedly connected with the sliding part, and two ends of each hinge rod (3 c 2) are respectively hinged to the first hinges (3 c 1) and the second hinges (3 c 3).

7. The special slit wrench for assembling the variable beam assembly node of the assembly building according to claim 6, wherein the fixed bracket (3 a) comprises a connecting rod (3 a 1), a fixed plate (3 a 2) and an avoiding opening (3 a 3), the fixed plate (3 a 2) is arranged on the outer side of the main body (1), the fixed plate (3 a 2) coincides with the axis of the main body (1), the connecting rods (3 a 1) are uniformly distributed around the fixed plate (3 a 2), two ends of the connecting rod (3 a 1) are respectively fixedly connected with the main body (1) and the fixed plate (3 a 2), the linear driver (3 d) is fixedly connected with the fixed plate (3 a 2), and the avoiding opening (3 a 3) for avoiding the hinged rod (3 c 2) is arranged on the fixed plate (3 a 2).

8. The special slot wrench for assembling the variable beam assembly node of the assembly building as claimed in claim 7, wherein the linear driver (3 d) comprises a bearing (3 d 1), a threaded rod (3 d 2) and a hexagonal rod (3 d 3), an outer ring of the bearing (3 d 1) is fixedly connected with the fixed plate (3 a 2), an axis of the bearing (3 d 1) is overlapped with an axis of the main body (1), one end of the threaded rod (3 d 2) is fixedly connected with an inner ring of the bearing (3 d 1), the threaded rod (3 d 2) extends in a direction away from the main body (1), the hexagonal rod (3 d 3) which is coaxial with and fixedly connected with the threaded rod (3 d 2) is arranged at one end of the threaded rod (3 d 2) away from the main body (1), the moving block (3 b) is sleeved on the threaded rod (3 d 2), and the moving block (3 b) is in threaded connection with the threaded rod (3 d 2).

9. The special slit wrench for assembling the variable beam assembly node of the assembly building according to claim 1, wherein the holding part (4) is in an elongated shape, a groove (4 a) extending along the length direction of the holding part (4) is formed in the holding part (4), the groove (4 a) penetrates through one end, away from the main body (1), of the holding part (4), reinforcing ribs (4 b) located on two sides of the groove (4 a) are arranged on the holding part (4), the extension part (5) comprises an extension rod (5 a), the extension rod (5 a) is in sliding connection with the groove (4 a), one end, away from the main body (1), of the extension rod (5 a) is located on the outer side of the holding part (4), a pin (5 b) is fixedly installed on one end, away from the main body (1), and a rubber sleeve (5 c) is sleeved on the outer side of the pin (5 b).

10. The special slit wrench for assembling the variable beam assembly node of the assembly building according to claim 9, wherein a bolt (5 d) is installed at one end of the extension rod (5 a) close to the main body (1), the rod part of the bolt (5 d) is in threaded connection with the extension rod (5 a), and the cap part of the bolt (5 d) abuts against the surface of the holding part (4).