A steel structure column butt joint auxiliary device

Abstract

The present invention provides a steel structure column matching auxiliary device, which includes: two adjustment seats; wherein the two adjustment seats are both inverted U-shaped structures, which are respectively correspondingly clamped on two pieces to be matched; the two adjustment seats are both provided with a height adjustment mechanism, which is used to adjust the height of the piece to be matched corresponding to the adjustment seat, so that the top walls of the two pieces to be matched are flush; the two adjustment seats are both provided with a lateral adjustment mechanism, which is used to adjust the gap between the piece to be matched and the side plate, so that the side walls of the two pieces to be matched are flush; the two adjustment seats are both provided with a locking member, which is used to lock the piece to be matched and the adjustment seat when the two pieces to be matched are adjusted to match; a length adjustment mechanism is provided between the two adjustment seats, which is used to adjust the distance between the two adjustment seats to adjust the gap between the matching positions of the two pieces to be matched. The device fixes the steel plate in a spatial position, so that the welds of the two pieces to be matched are spatially butted, and the installation quality is guaranteed during the welding process.

Description

Technical Field

[0001] The present invention relates to the technical field of metallurgical structure installation, and more particularly, to an auxiliary device for aligning steel structure columns. Background Art

[0002] Since some steel structures need to be butt-welded on site, but the spatial positioning of steel structure welds has always been a difficult problem in installation. Summary of the Invention

[0003] In view of this, the present invention provides an auxiliary device for aligning steel structure columns, aiming to solve the problem of difficult butt-welding of existing steel structures.

[0004] The present invention provides an auxiliary device for aligning steel structure columns, which includes: two adjusting seats; wherein, both of the two adjusting seats are in an inverted U-shaped structure and are respectively used for clamping on two workpieces to be butted; height adjusting mechanisms are arranged on both of the two adjusting seats to adjust the height of the workpieces to be butted corresponding to the adjusting seats so that the top walls of the two workpieces to be butted are flush; side adjusting mechanisms are arranged on both of the two adjusting seats to adjust the gap between the workpiece to be butted and the side plate so that the side walls of the two workpieces to be butted are flush; locking members are arranged on both of the two adjusting seats to lock the workpiece to be butted and the adjusting seat when the two workpieces to be butted are adjusted to be butted; a length adjusting mechanism is arranged between the two adjusting seats to adjust the distance between the two adjusting seats so as to adjust the gap between the butting positions of the two workpieces to be butted.

[0005] Further, in the above auxiliary device for aligning steel structure columns, the height adjusting mechanism penetrates through the top plate of the adjusting seat and is connected with the top plate in a position-adjustable manner along the thickness direction of the top plate; and / or, the side adjusting mechanism penetrates through the side plate of the adjusting seat and is connected with the side plate in a position-adjustable manner along the thickness direction of the top plate.

[0006] Further, in the above auxiliary device for aligning steel structure columns, the height adjusting mechanism is a threaded rod which is threadedly connected with the top plate; and / or, the side adjusting mechanism is a bolt member which is threadedly connected with the side plate.

[0007] Further, in the above auxiliary device for aligning steel structure columns, an adjusting handle is arranged at the end of the height adjusting mechanism and / or the side adjusting mechanism outside the adjusting seat for screwing the height adjusting mechanism and / or the side adjusting mechanism to rotate relative to the adjusting seat.

[0008] Further, for the above steel structure column butt joint auxiliary device, an adjusting pad is provided at the end of the height adjusting mechanism and / or the side adjusting mechanism placed inside the U-shaped groove of the inverted U-shaped structure, for pressing against the piece to be butted so that it moves along the adjusting direction of the height adjusting mechanism and / or the side adjusting mechanism.

[0009] Further, for the above steel structure column butt joint auxiliary device, the locking member is a threaded rod provided on different side plates from the side adjusting mechanism, and is threadedly connected to the side plate, so as to press and lock the piece to be butted through the threaded rod and the end of the side adjusting mechanism.

[0010] Further, for the above steel structure column butt joint auxiliary device, a pressing pad is provided at the end of the locking member placed inside the U-shaped groove of the inverted U-shaped structure, for pressing against the piece to be butted so that the piece to be butted is clamped between the locking member and the side adjusting mechanism.

[0011] Further, for the above steel structure column butt joint auxiliary device, a locking handle is provided at the end of the locking member placed outside the adjusting seat, for screwing the locking member to rotate relative to the adjusting seat.

[0012] Further, for the above steel structure column butt joint auxiliary device, the length adjusting mechanism includes: a positioning ring, a bolt and a nut connected by threads; wherein, the positioning ring and the nut are respectively arranged on the two adjusting seats, and the bolt passes through the positioning ring and the nut to adjust the gap between the positioning ring and the nut.

[0013] Further, for the above steel structure column butt joint auxiliary device, there are multiple length adjusting mechanisms, which are respectively arranged on the outer sides of the top plate and the two side plates.

[0014] The steel structure column butt joint auxiliary device provided by the present invention clamps the parts to be butted by two adjusting seats with an inverted U-shaped structure respectively. The height adjusting mechanisms on the adjusting seats are used to cooperate to adjust the height positions of the two parts to be butted, so that the top walls of the two parts to be butted are flush; the side adjusting mechanisms on the adjusting seats are used to adjust the positions of the parts to be butted in the U-shaped grooves along the width direction of the U-shaped grooves, so that the side walls of the two parts to be butted are flush, thereby ensuring that the two parts to be butted are flush in the front-back direction, and further ensuring that the two parts to be butted are butted; the parts to be butted and the adjusting seats are locked by locking parts, and the distance between the two adjusting seats is adjusted by the length adjusting mechanisms on the two adjusting seats to adjust the gap between the butt joint positions of the parts to be butted, so as to meet the requirements of butt joint welding. In particular, this device fixes the steel plate in a spatial position, enables the welds of the two parts to be butted to be butt-jointed in space, and ensures the installation quality during the welding process. Since this device is small, convenient, highly practical, and simple to operate, it can meet the butt joint requirements of most steel structures, and can also be extended to the local butt joint of steel plates; in addition, since it is a local adjustment of the steel structure, multiple sets of the same steel structure group can be used simultaneously to shorten the construction period and improve the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0016] Figure 1 is the front view of the steel structure column butt joint auxiliary device provided by the embodiment of the present invention;

[0017] Figure 2 is the rear view of the steel structure column butt joint auxiliary device provided by the embodiment of the present invention;

[0018] Figure 3 is the front view of the adjusting seat provided by the embodiment of the present invention;

[0019] Figure 4 is Figure 3 the cross-sectional view at A-A in

[0020] Figure 5 is the side view of the adjusting seat provided by the embodiment of the present invention;

[0021] Figure 6 is Figure 5 the cross-sectional view at B-B in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0023] See Figures 1 to 6 , which shows the preferred structure of the steel structure column butt joint auxiliary device provided by the embodiment of the present invention. As shown in the figure, the auxiliary device includes: two adjustment seats 1 arranged side by side; wherein,

[0024] Both of the two adjustment seats 1 are inverted U-shaped structures, which are respectively used to be clamped on two parts to be butted (not shown in the figure). Specifically, the adjustment seat 1 is an inverted U-shaped structure, which includes a top plate 11 and two side plates 12, and the three are arranged in a U-shape to enclose a U-shaped groove 13 for clamping the parts to be butted. The parts to be butted can be related components provided with plate-like structures, such as steel plates or I-beams and other steel structures. The adjustment seat 1 is clamped on the plate-like structure through its U-shaped groove 13. For a steel plate, the steel plate is clamped in the U-shaped groove 13. For an I-beam, its flange plate is clamped in the U-shaped groove 13. Therefore, the width of the U-shaped groove 13 is greater than the thickness of the plate-like structure of the part to be butted.

[0025] Height adjustment mechanisms 2 are provided on both of the two adjustment seats 1, which are used to adjust the height of the parts to be butted corresponding to the adjustment seats 1 so that the top walls of the two parts to be butted are flush. Specifically, the height adjustment mechanism 2 can be arranged on the top plate 11 of the adjustment seat 1 to cooperate with the height adjustment mechanisms 2 on the two adjustment seats 1 to adjust the height positions of the two parts to be butted so that the top walls of the two parts to be butted are flush, that is, the height positions of the two parts to be butted are the same.

[0026] Side adjustment mechanisms 3 are provided on the side plates 12 of both of the two adjustment seats 1, which are used to adjust the gap between the part to be butted and the side plate 12 so that the side walls of the two parts to be butted are flush. Specifically, the side adjustment mechanism 3 can be one or more, and it can be arranged on the same side plate 12 to adjust the position of the part to be butted in the U-shaped groove 13 along the width direction of the U-shaped groove 13 (such as the horizontal direction shown in Figure 5 ) in one direction (such as the right side shown in Figure 5 ) so that the side walls of the two parts to be butted are flush, thereby ensuring that the two parts to be butted are in the front-rear direction (relative to Figure 1flush with the position shown), so as to ensure the butting of the two parts to be butted, thereby realizing the welding of the two parts to be butted. Of course, the side adjustment mechanism 3 can also be arranged on the two side plates 12, that is, the side adjustment mechanism 3 is arranged on both of the two side plates 12 to adjust the position of the part to be butted in the width direction of the U-shaped groove 13 in the U-shaped groove through two directions. Among them, in this embodiment, one is taken as an example, which is arranged on the same side plate 12, that is, the left side plate 12 (relative to Figure 5 the position shown) for illustration.

[0027] Locking parts 4 are arranged on both of the two adjustment seats 1 to lock the part to be butted and the adjustment seat 1 when the two parts to be butted are adjusted to be butted. Specifically, the locking part 4 can be components such as a clamp. For the convenience of locking the part to be butted, preferably, the locking part 4 can be a threaded rod arranged on different side plates 12 from the side adjustment mechanism 3, which is threadedly connected to the side plate 12, and the length of the locking part 4 placed in the U-shaped groove 13 is adjusted to press and lock the part to be butted through the threaded rod and the end of the side adjustment mechanism 3, thereby avoiding the movement of the part to be butted, and thus ensuring the accuracy of the butting position of the two parts to be butted. That is to say, the side adjustment mechanism 3 is arranged on the left side plate 12 (relative to Figure 5 the position shown), and the locking part 4 is arranged on the right side plate 12, so that the locking part 4 cooperates with the side adjustment mechanism 3 to clamp the part to be butted in two directions (such as Figure 5 the left and right sides shown), so as to realize the clamping and locking of the part to be butted. Of course, there can also be multiple locking parts 4. In this embodiment, two are taken as an example for illustration, and they are arranged side by side on the right side plate 12 to ensure the stability of the locking of the part to be butted. To further improve the stability of the locking of the part to be butted, preferably, a pressing pad 41 is arranged at the end of the locking part 4 placed in the U-shaped groove 13 of the inverted U-shaped structure (such as Figure 4 shown) to press the part to be butted so that the part to be butted is clamped between the locking part 4 and the adjustment pad 8 arranged at the end of the side adjustment mechanism 3, so that the part to be butted is clamped between the pressing pad 41 and the adjustment pad 8 arranged at the end of the side adjustment mechanism 3. For the convenience of the locking part 4 to lock the part to be butted, preferably, a locking handle 42 is arranged at the end of the locking part 4 outside the adjustment seat 1 (such as Figure 4 the lower end shown) to rotate the locking part 4 relative to the side plate 12 of the adjustment seat 1 to clamp the part to be butted. At least one of the locking parts 4 is arranged facing the side adjustment mechanism 3, that is, face to face, so as to directly clamp the part to be butted, and a fixing pad 6 fixed on the side plate 12 is arranged at the position opposite to the other locking parts 4 to increase the area for supporting the part to be butted.

[0028] A length adjustment mechanism 5 is provided between the two adjustment seats 1 for adjusting the distance between the two adjustment seats 1 to adjust the gap between the butting positions of the two components to be butted. Specifically, there can be multiple length adjustment mechanisms 5, which are respectively arranged on the outer sides of the top plate 11 and the two side plates 12. In this embodiment, three are taken as examples for illustration, and they are respectively arranged on the outer sides of the top plate 11 and the two side plates 12, so as to adjust the distance between the two adjustment seats 1 in the length direction thereof (such as Figure 1 the horizontal direction shown) through three points, and further adjust the gap between the butting positions of the components to be butted to meet the requirements of butt welding.

[0029] Continue to refer to Figures 1 to 6 , the height adjustment mechanism 2 passes through the top plate 11 of the adjustment seat 1 and is connected to the top plate 11 in a position-adjustable manner along the thickness direction of the top plate 11 (such as Figure 1 the up and down direction shown). Specifically, an installation hole is provided on the top plate 11, and the height adjustment mechanism 2 passes through the installation hole so that the bottom end of the height adjustment mechanism 2 is arranged in the U-shaped groove 13 of the adjustment seat 1 and presses against the top wall of the component to be butted. By adjusting the relative position between the height adjustment mechanism 2 and the top plate 11, the length of the height adjustment mechanism 2 placed in the U-shaped groove 13 is further adjusted, so as to push the component to be butted downward by pressing with the bottom end of the height adjustment mechanism 2, that is, the height adjustment of the two components to be butted is realized through the height adjustment mechanisms 2 arranged on the two adjustment seats, so that their top walls are flush.

[0030] In an embodiment of the present invention, the height adjustment mechanism 2 can be a threaded rod, and the installation hole on the top plate 11 is a threaded through hole. The threaded rod passes through the threaded through hole and is threadedly connected to the top plate 11. It should be noted that the size value of the threaded rod can be determined according to specific situations, and this embodiment does not make any limitation on it. When adjusting the position of the component to be butted through the height adjustment mechanism 2, the component to be butted can be moved along the height direction by rotating the threaded rod. In this embodiment, the threaded rod cooperates with the threaded through hole to adjust the position of the component to be butted, with a simple structure, convenient operation, and easy to control the adjustment of the position of the component to be butted. For the convenience of screwing the height adjustment mechanism 2, preferably, an adjustment handle (not shown in the figure) is provided at the end of the height adjustment mechanism 2 located outside the U-shaped groove of the inverted U-shaped structure for pressing against the component to be butted to make it move along the adjustment direction of the height adjustment mechanism 2 (such as Figure 5 the up and down direction shown).

[0031] In another embodiment of the present invention, the height adjustment mechanism 2 can be a smooth straight rod, and the mounting hole on the top plate 11 is a connecting through hole. The smooth straight rod is slidably inserted through the connecting through hole and can be connected to the top plate 11 through a clamping member. Specifically, in implementation, the cross-sectional shape of the straight rod and the cross-sectional shape of the connecting through hole can be circular. However, the present invention is not limited thereto. In other embodiments, the shape of the straight rod and the connecting through hole can be appropriate shapes, such as square, diamond, etc. The specific adjustment method is as follows: the clamping member can be released, and then the straight rod can be adjusted to move the position of the component to be butted along the height direction through the connecting through hole. After the adjustment is completed, it can be clamped by the clamping member.

[0032] In the above embodiments, in order to increase the contact area between the height adjustment mechanism 2 and the component to be butted when adjusting the position of the component to be butted, preferably, the end of the height adjustment mechanism 2 placed in the adjustment seat 1 (such as Figure 5 the lower end shown) is provided with an adjustment pad 8 for screwing the height adjustment mechanism 2 to rotate relative to the adjustment seat 1, so that the adjustment pad 8 moves downward along with the bottom end of the height adjustment mechanism 2 to push the component to be butted to move, thereby realizing the adjustment of the positions of the two components to be butted in the height direction.

[0033] Continue to refer to Figures 1 to 6 , the principle of adjusting the position of the component to be butted by the side adjustment mechanism 3 is similar to that of the height adjustment mechanism 2, and the two can refer to each other.

[0034] In this embodiment, the side adjustment mechanism 3 is inserted through the side plate 12 of the adjustment seat 1 and is connected to the side plate 12 in a position-adjustable manner along the thickness direction of the side plate 12 (such as Figure 4 the up and down direction shown). Specifically, an adjustment hole is provided on the side plate 12, and the side adjustment mechanism 3 is inserted through the adjustment hole so that the end of the side adjustment mechanism 3 located in the adjustment seat 1 (such as Figure 4 the lower end shown) is arranged in the U-shaped groove 13 of the adjustment seat 1 and abuts against the side wall of the component to be butted. By adjusting the relative position of the side adjustment mechanism 3 and the side plate 12, the length of the side adjustment mechanism 3 placed in the U-shaped groove 13 can be adjusted, so that the bottom end of the side adjustment mechanism 3 abuts and pushes the component to be butted to move downward, that is, the front and back directions (relative to Figure 2 the position shown) of the two components to be butted are adjusted through the side adjustment mechanisms 3 provided on the two adjustment seats 1 to make their side walls flush.

[0035] The lateral adjustment mechanism 3 can be a threaded rod. The adjustment hole on the side plate 12 is a threaded through-hole. The threaded rod passes through the threaded through-hole and is threadedly connected to the side plate 12. It should be noted that the dimensional value of the threaded rod can be determined according to specific circumstances, and this embodiment does not make any limitations on it. When adjusting the position of the component to be butted by the lateral adjustment mechanism 3, the threaded rod can be rotated by a knob to make the component to be butted move in the front-back direction. In this embodiment, the threaded rod cooperates with the threaded through-hole to adjust the position of the component to be butted, with a simple structure, convenient operation, and easy to control the adjustment of the position of the component to be butted. For the convenience of screwing the lateral adjustment mechanism 3, preferably, an adjustment handle 7 is provided at the end of the lateral adjustment mechanism 3 located outside the U-shaped groove of the inverted U-shaped structure, for pressing against the component to be butted to make it move in the adjustment direction of the height adjustment mechanism 2 (the front-back direction as shown in the figure).

[0036] To increase the contact area between the lateral adjustment mechanism 3 and the component to be butted when adjusting the position of the component to be butted, preferably, an adjustment pad 8 is provided at the end of the lateral adjustment mechanism 3 located inside the adjustment seat 1 (such as Figure 4 the lower end shown in the figure), for screwing the lateral adjustment mechanism 3 to rotate relative to the adjustment seat 1, so that the adjustment pad 8 moves back and forth with the end of the lateral adjustment mechanism 3 located inside the adjustment seat 1 to push the component to be butted to move, thereby realizing the adjustment of the positions of the two components to be butted in the front-back direction.

[0037] Continue to refer to Figures 1 to 6 , the principle of the length adjustment mechanism 5 adjusting the distance between the two adjustment seats 1 is similar to the principle of the lateral adjustment mechanism 3 and the height adjustment mechanism 2 adjusting the position of the component to be butted, and they can be mutually referred to.

[0038] In the first implementation manner of the present invention, the length adjustment mechanism 5 includes: a positioning ring 51, a bolt 52 and a nut 53 that are threadedly connected; wherein,

[0039] The positioning ring 51 and the nut 522 are respectively arranged on the two adjustment seats 1, and the bolt 52 passes through the positioning ring 51 and the nut 53 to adjust the gap between the positioning ring 51 and the nut 53. Specifically, the positioning ring 51 can be a ring-shaped structure, which can be fixed on the outer wall surface of the adjustment seat 1 by welding or other connection methods. For example, in this embodiment, taking the length adjustment mechanism 5 being arranged on the outer side wall of the side plate 12 as an example for illustration, the positioning ring 51 can be welded on the outer side wall of the side plate 12 of one of the adjustment seats 1, and the outer side wall is the side wall located outside the U-shaped groove 13. The nut 522 can be welded on the outer side wall of the side plate 12 of the other adjustment seat 1, and it is arranged on the same side of the two adjustment seats 1 as the positioning ring 51. When the length adjustment mechanism 5 is arranged on the top wall of the top 11 of one of the adjustment seats 1, the positioning ring 51 can be welded on the top wall of the top 11, and the nut 522 can be welded on the top wall of the top 11 of the other adjustment seat 1.

[0040] The head 521 of the bolt 52 and the nut 53 are respectively arranged on the left and right sides of the positioning ring 51 (relative to Figure 2 the position shown), the screw rod 522 of the bolt 52 passes through the positioning ring 51 and is threadedly connected to the nut 53. By screwing the bolt 52 to press against the positioning ring 51 and the nut 53, the gap between the positioning ring 51 and the nut 53 is adjusted, so as to adjust the gap between the two adjusting seats 1, thereby driving the two parts to be butted to move, and realizing the adjustment of the gap at the butting position of the two parts to be butted, so as to realize the welding of the parts to be butted.

[0041] In summary, for the steel structure column butting auxiliary device provided in this embodiment, the two adjusting seats 1 with an inverted U-shaped structure respectively clamp the parts to be butted. The height adjusting mechanism 2 on the adjusting seat 1 is used to cooperate to adjust the height positions of the two parts to be butted, so that the top walls of the two parts to be butted are flush; the side adjusting mechanism 3 on the adjusting seat 1 is used to adjust the position of the part to be butted in the U-shaped groove 13 along the width direction of the U-shaped groove 13, so that the side walls of the two parts to be butted are flush, thereby ensuring that the two parts to be butted are flush in the front-back direction, and further ensuring that the two parts to be butted are butted; the locking member 4 locks the part to be butted and the adjusting seat 1, and the length adjusting mechanism 5 on the two adjusting seats 1 is used to adjust the distance between the two adjusting seats 1, so as to adjust the gap between the butting positions of the parts to be butted, so as to meet the requirements of butting welding. In particular, this device fixes the steel plate in the spatial position, enables the welds of the two parts to be butted to be butted in space, and ensures the installation quality during the welding process. Since this device is small, convenient, highly practical, and simple to operate, it can meet the butting requirements of most steel structures, and can also be extended to the local butting of steel plates; in addition, since it is a local adjustment of the steel structure, multiple sets of the same steel structure group can be used simultaneously to shorten the construction period and improve the construction efficiency.

[0042] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. An auxiliary device for aligning steel structure columns, characterized in that, Comprising: Two adjusting seats (1); wherein, Both of the two adjusting seats (1) are in an inverted U-shaped structure, including a top plate (11) and two side plates (12), and the two adjusting seats (1) are respectively used for clamping on two parts to be butted; Height adjusting mechanisms (2) are arranged on both of the two adjusting seats (1) for adjusting the height of the part to be butted corresponding to the adjusting seat (1) so that the top walls of the two parts to be butted are flush; Side adjusting mechanisms (3) are arranged on both of the two adjusting seats (1) for adjusting the gap between the part to be butted and the side plate so that the side walls of the two parts to be butted are flush; Locking parts (4) are arranged on both of the two adjusting seats (1) for locking the part to be butted and the adjusting seat (1) when the two parts to be butted are adjusted to be butted; A length adjusting mechanism (5) is arranged between the two adjusting seats (1) for adjusting the distance between the two adjusting seats (1) to adjust the gap between the butting positions of the two parts to be butted; The height adjusting mechanism (2) passes through the top plate (11) of the adjusting seat (1) and is connected with the top plate (11) in a position-adjustable manner along the thickness direction of the top plate (11); the side adjusting mechanism (3) passes through the side plate (12) of the adjusting seat (1) and is connected with the side plate (12) in a position-adjustable manner along the thickness direction of the side plate (12); The height adjusting mechanism (2) is a threaded rod which is threadedly connected with the top plate (11); the side adjusting mechanism (3) is a bolt part which is threadedly connected with the side plate (12); An adjusting handle (7) is arranged at the end of the height adjusting mechanism (2) and / or the side adjusting mechanism (3) outside the adjusting seat (1) for screwing the height adjusting mechanism (2) and / or the side adjusting mechanism (3) to rotate relative to the adjusting seat (1); An adjusting pad (8) is arranged at the end of the height adjusting mechanism (2) and / or the side adjusting mechanism (3) inside the U-shaped groove (13) of the inverted U-shaped structure for pressing the part to be butted to move it along the adjusting direction of the height adjusting mechanism (2) and / or the side adjusting mechanism (3); The locking part (4) is a threaded rod arranged on different side plates (12) from the side adjusting mechanism (3), and it is threadedly connected with the side plate (12) to press and lock the part to be butted through the threaded rod and the end of the side adjusting mechanism (3); A pressing pad (41) is arranged at the end of the locking part (4) inside the U-shaped groove (13) of the inverted U-shaped structure for pressing the part to be butted so that the part to be butted is clamped between the locking part (4) and the side adjusting mechanism (3); A locking handle (42) is arranged at the end of the locking part (4) outside the adjusting seat (1) for screwing the locking part (4) to rotate relative to the adjusting seat (1); The length adjusting mechanism (5) includes: a positioning ring (51), a bolt (52) and a nut (53) which are threadedly connected; wherein, The positioning ring (51) and the nut (53) are respectively arranged on the two adjusting seats (1), and the bolt (52) passes through the positioning ring (51) and the nut (53) to adjust the gap between the positioning ring (51) and the nut (53); A plurality of length adjusting mechanisms (5) are arranged on the outer sides of the top plate (11) and the two side plates (12) respectively.

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