An adjustable spacing steel structure truss chord positioning clamp

Abstract

The utility model relates to the field of steel structure truss processing installation especially adjustable interval's steel structure truss chord positioning fixture, including fixed mechanism, it includes truss body and I -beam bottom plate, and the upper end of I -beam bottom plate is provided with a plurality of chord positioning frame for supporting and clamping to I -beam bottom plate, and the lower end of chord positioning frame is provided with the limiting mechanism for carrying out the primary fixation after the distance adjustment of a plurality of chord positioning frame, and the upper end of limiting mechanism is provided with the lifting press assembly for further fixing chord positioning frame, the whole connecting mechanism, it includes the connecting rod for connecting adjacent two chord positioning frame and then synchronous adjustment, and the one side of connecting rod all is provided with the push -and -pull assembly for removing chord positioning frame further fixed. Solveed the problem that the existing technology has the interval adjustment operation lock and cannot realize the multiple simultaneous adjustment.

Description

Technical Field

[0001] This utility model relates to the field of steel structure truss processing and installation, and in particular to an adjustable spacing steel structure truss chord positioning clamp. Background Technology

[0002] In the field of steel structure truss fabrication and installation, the precise positioning of chord members is a key link to ensure the stability and load-bearing capacity of the truss structure. As a core auxiliary equipment, the ease of spacing adjustment and the reliability of fixing of chord member positioning fixtures directly affect construction efficiency and project quality.

[0003] In existing technologies, steel truss chord positioning clamps mostly adopt a fixed spacing design or a single adjustment structure. The spacing adjustment operation is cumbersome. During adjustment, the fixing parts of the positioning frame must be released one by one, which cannot achieve rapid and continuous adjustment. At the same time, when multiple chord positioning frames need to be adjusted at equal intervals or synchronously, they must be operated one by one, resulting in poor adjustment consistency and long time consumption, which seriously affects the installation accuracy and construction progress. Utility Model Content

[0004] In view of the problems of anti-locking operation and inability to achieve multiple simultaneous adjustments in the above or existing technologies, this utility model is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a fixing mechanism is provided, which includes a truss body and an I-beam base plate. The upper end of the I-beam base plate is provided with a plurality of chord positioning frames for supporting and clamping the I-beam base plate. The lower end of the chord positioning frames is provided with a limiting mechanism for initially fixing the plurality of chord positioning frames after the distance is adjusted. The upper end of the limiting mechanism is provided with a lifting and pressing assembly for further fixing the chord positioning frames.

[0006] The overall connection mechanism includes a connecting rod for connecting and synchronously adjusting two adjacent chord positioning frames, and each connecting rod has a push-pull assembly on one side for releasing the chord positioning frame from further fixation.

[0007] As a preferred embodiment of the adjustable spacing steel truss chord positioning fixture of this utility model, the limiting mechanism includes an I-beam groove slidably connected to the I-beam base plate on both sides of the lower end of the chord positioning frame. A through groove is provided in the middle of the outer side wall of the I-beam groove. A limiting plate is slidably arranged in the middle of one side of the through groove. A limiting rack is fixedly arranged in the middle of the I-beam base plate at the front end of the limiting plate. The width of the groove between the limiting racks is consistent with the width of the front end of the limiting plate, and the front end of the limiting plate is set as a semi-circle that can disengage from the limiting position.

[0008] As a preferred embodiment of the adjustable spacing steel truss chord positioning fixture of this utility model, wherein: a plurality of first compression springs are fixedly provided on the middle part of the surface of the limiting plate away from the limiting rack and fixedly connected to the inner wall of the through groove, and the plurality of first compression springs are used to push the limiting plate and the limiting rack to insert and limit the positioning.

[0009] As a preferred embodiment of the adjustable spacing steel truss chord positioning clamp of this utility model, the lifting and pressing assembly includes a first vertical groove opened at the upper end of the through groove on the side away from the I-beam groove, and a second vertical groove opened at the upper end of the first vertical groove. The inner cavity of the first vertical groove is slidably provided with a first vertical connecting rod that abuts against the rear end surface of the limiting plate for further fixation. A lower pressure plate that drives the first vertical connecting rod to move is fixedly provided at the upper end of the first vertical connecting rod. A plurality of second compression springs for driving the lower pressure plate to reset are fixedly provided on the lower surface of the lower pressure plate.

[0010] As a preferred embodiment of the adjustable spacing steel truss chord positioning clamp of this utility model, wherein: a second vertical connecting rod for pushing the lower pressure plate to move is fixedly provided in the middle of the upper surface of the lower pressure plate, and a plug-in handle for driving the second vertical connecting rod to move up and down is slidably provided at the upper end of the second vertical connecting rod.

[0011] As a preferred embodiment of the adjustable spacing steel truss chord positioning fixture of this utility model, the second vertical groove has two mutually symmetrically arranged limiting grooves at its upper end. The limiting grooves are used to limit the insertion of the plug handle. The distance between the two limiting grooves is the travel distance of the first vertical connecting rod abutting and separating from the limiting plate.

[0012] As a preferred embodiment of the adjustable spacing steel truss chord positioning clamp of this utility model, the push-pull assembly includes a threaded rod that is inserted into and limited by the connecting rod. A push block is fixedly provided on the side of the threaded rod away from the connecting rod and is slidably arranged on both sides of the cavity of the through groove. The push block is provided on the side of the limiting plate with two mutually abutting first inclined surfaces and second inclined surfaces, which realize the push block pushes the first vertical connecting rod and the limiting plate to rise and separate from the limiting plate to release the fixed limitation. The first inclined surface is opened at the upper end of the push block on the side of the limiting plate, and the second inclined surface is opened at the lower end of the surface of the first vertical connecting rod on the side of the push block.

[0013] As a preferred embodiment of the adjustable spacing steel truss chord positioning fixture of this utility model, wherein: a fixed back plate is provided at the middle of the surface of the push block away from the limiting plate and fixedly penetrates the outer sidewall of the through groove, and the fixed back plate is threadedly connected to the threaded rod.

[0014] The beneficial effects of this utility model of an adjustable-spacing steel truss chord positioning clamp are as follows:

[0015] 1. Through the cooperation of the limiting mechanism and the lifting and pressing assembly, the spacing of the chord positioning frame is conveniently adjusted and reliably fixed. In the limiting mechanism, the semi-circular design of the front end of the limiting plate, together with the first compression spring, allows the chord positioning frame to slide along the limiting rack under the action of horizontal thrust. After being released, it automatically snaps into the tooth groove to complete the initial fixation. The adjustment process does not require disassembling the fixing parts one by one, making the operation highly efficient. The first vertical connecting rod abuts and limits the limiting plate, forming a secondary fixation, preventing the limiting plate from detaching from the limiting rack due to lateral force. The double fixation structure greatly improves the stability of the positioning fixture, ensuring that the chord will not be displaced during processing and installation, and guaranteeing the construction accuracy of the truss structure.

[0016] 2. Connecting rods can be used to connect adjacent chord positioning frames into a whole, and synchronous adjustment can be achieved with the push-pull assembly. After the fixed restriction of the lifting and pressing assembly is released by the inclined plane transmission in the push-pull assembly, the operator can push any chord positioning frame, which will drive multiple connected positioning frames to slide along the I-beam base plate to achieve equidistant or synchronous spacing adjustment. There is no need to operate them one by one, which solves the problems of poor consistency and long time consumption of traditional clamp adjustment. The synchronous adjustment function greatly shortens the spacing adjustment time, which is especially suitable for the installation of large trusses with multiple chords, and significantly improves the construction progress and adjustment accuracy. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of an adjustable-spacing steel truss chord positioning fixture.

[0019] Figure 2 A cross-sectional view of the internal structure of the chord positioning frame for an adjustable-spacing steel truss chord positioning fixture.

[0020] Figure 3 This is an enlarged cross-sectional view of the internal structure of the chord positioning frame of an adjustable-spacing steel truss chord positioning fixture.

[0021] Figure 4 A schematic diagram showing the positions of the limiting mechanism and lifting and pressing components of the adjustable-spacing steel truss chord positioning clamp.

[0022] Figure 5 A schematic diagram of the push-pull assembly of the limiting mechanism for the positioning clamp of the adjustable spacing steel truss chord members.

[0023] Figure 6A schematic diagram of a push-pull assembly for a positioning clamp on the chord of an adjustable-spacing steel truss.

[0024] Figure 7 A schematic diagram showing the connection relationship between the plug handle and the limiting groove of the positioning clamp for the chord members of an adjustable-spacing steel truss.

[0025] In the diagram: 10. Truss body; 11. I-beam base plate; 12. Chord positioning frame; 13. Limiting mechanism; 131. I-beam groove; 132. Through groove; 133. Limiting plate; 134. Limiting rack; 135. First compression spring; 14. Lifting and pressing assembly; 141. First vertical groove; 142. Second vertical groove; 143. First vertical connecting rod; 144. Lower pressure plate; 145. Second compression spring; 146. Second vertical connecting rod; 147. Insert handle; 148. Limiting groove; 20. Connecting rod; 21. Push-pull assembly; 211. Threaded rod; 212. Push block; 213. First inclined plane; 214. Second inclined plane; 215. Fixed back plate. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Example 1, referring to Figures 1 to 7 This is the first embodiment of the present invention. This embodiment provides an adjustable spacing steel truss chord positioning fixture, which can achieve the effect of adjusting the distance and fixing the position of multiple chord positioning frames. It includes a fixing mechanism, which includes a truss body 10 and an I-beam base plate 11. The upper end of the I-beam base plate 11 is provided with a plurality of chord positioning frames 12 for supporting and clamping the I-beam base plate 11. The lower end of the chord positioning frames 12 is provided with a limiting mechanism 13 for initially fixing the plurality of chord positioning frames 12 after the distance is adjusted. The limiting mechanism 13 includes an I-beam groove 131 opened on both sides of the lower end of the chord positioning frame 12 and slidably connected to the I-beam base plate 11. A through groove 132 is opened in the middle of the outer side wall of the I-beam groove 131. The inner cavity of the through groove 132 is located in the middle of one side of the I-beam groove 131 and a limiting plate 133 is slidably arranged in the middle. The front end of the limiting plate 133 is provided with a limiting rack 134 fixedly arranged in the middle of the I-beam base plate 11.

[0028] The width of the groove between the limiting racks 134 is the same as the width of the front end of the limiting plate 133, and the front end of the limiting plate 133 is set as a semi-circle that can be disengaged from the limiting position. A number of first compression springs 135 are fixedly installed on the middle of the surface of the limiting plate 133 away from the limiting racks 134 and are fixedly connected to the inner wall of the through groove 132. The number of first compression springs 135 are used to push the limiting plate 133 and the limiting racks 134 to insert and limit the position.

[0029] Specifically, the chord positioning bracket 12 has an inverted U-shaped structure, with its inner walls on both sides sliding against the outer flange of the I-beam base plate 11, thus providing stable guidance for the chord positioning bracket 12 in the horizontal direction. The semi-circular design at the front end of the limiting plate 133 allows it to automatically move backward and slide along the limiting rack 134 under the action of the first compression spring 135 when the chord positioning bracket 12 is subjected to horizontal thrust, achieving rapid adjustment of the spacing; and when the thrust disappears, the limiting plate 133 can quickly engage with the toothed groove of the limiting rack 134 to prevent displacement of the chord positioning bracket 12. The first compression spring 135 is evenly distributed on the back of the limiting plate 133 to ensure uniform force distribution when the limiting plate 133 is inserted with the limiting rack 134, improving the reliability of the limiting.

[0030] Furthermore, the upper end of the limiting mechanism 13 is provided with a lifting and pressing assembly 14 for further fixing the chord positioning frame 12; the lifting and pressing assembly 14 includes a first vertical groove 141 opened on the upper end of the through groove 132 away from the I-shaped groove 131, and a second vertical groove 142 opened on the upper end of the first vertical groove 141. The inner cavity of the first vertical groove 141 is slidably provided with a first vertical connecting rod 143 that abuts against the rear end surface of the limiting plate 133 for further fixing. The upper end of the first vertical connecting rod 143 is fixedly provided with a lower pressure plate 144 that drives the first vertical connecting rod 143 to move. The lower surface of the lower pressure plate 144 is fixedly provided with a plurality of second compression springs 145 for driving the lower pressure plate 144 to reset.

[0031] A second vertical connecting rod 146 for pushing the lower pressure plate 144 to move is fixedly installed in the middle of the upper surface of the lower pressure plate 144. A plug handle 147 for driving the second vertical connecting rod 146 to move up and down is slidably installed at the upper end of the second vertical connecting rod 146. Two mutually symmetrically arranged limiting grooves 148 are opened at the upper end of the second vertical groove 142. The limiting grooves 148 are used to limit the plug handle 147 to be plugged in. The distance between the two limiting grooves 148 is the travel distance of the first vertical connecting rod 143 and the limiting plate 133 when they abut and separate.

[0032] The lower end of the first vertical connecting rod 143 is configured with an inclined surface adapted to the rear end surface of the limiting plate 133. When the pressing plate 144 moves downward, the inclined surface of the first vertical connecting rod 143 can further press the limiting plate 133 against the limiting rack 134, increasing the friction between the limiting plate 133 and the limiting rack 134, while preventing the limiting plate 133 from moving backward and separating from the limiting rack 134 under the action of the lateral force, thereby achieving secondary fixation of the chord positioning frame 12. The middle part of the plug handle 147 is provided with a sliding groove adapted to the upper end of the second vertical connecting rod 146 (e.g., Figure 7As shown, the plug handle 147 can slide laterally on the upper end of the second vertical connecting rod 146. The depth of the limiting groove 148 is matched with the diameter of the plug handle 147. When the plug handle 147 is inserted into the limiting groove 148, it can effectively prevent the lower pressure plate 144 from being displaced due to vibration.

[0033] In use, the chord positioning frame 12 is first pushed to slide on the I-beam base plate 11 according to the actual spacing requirements of the steel truss chords. During the sliding process, the semi-circular structure at the front end of the limiting plate 133 slides on the back of the teeth of the limiting rack 134, while compressing the first compression spring 135. When the chord positioning frame 12 slides to the predetermined position, the limiting plate 133 engages with the tooth groove of the limiting rack 134 to prevent it from moving left or right, thus achieving initial fixation and limitation of the chord positioning frame 12.

[0034] Then, by pulling the plug handle 147 out of the upper limiting groove 148 and pushing it downward, the second vertical connecting rod 146 moves downward and pushes the lower pressure plate 144 downward, compressing the second compression spring 145. When the lower pressure plate 144 moves downward, it will push the first vertical connecting rod 143 to slide downward in the inner cavity of the first vertical groove 141, and then insert it into the through groove 132 to abut against the back of the limiting plate 133 for limiting. This prevents the limiting plate 133 from moving backward due to further lateral movement, thus achieving a stable fixation between the limiting plate 133 and the limiting rack 134, which is also a further fixation of the chord positioning bracket 12.

[0035] Finally, insert the plug handle 147 into the lower limiting groove 148 to prevent the lower pressure plate 144 from resetting and ensure that the entire positioning fixture is in a stable working state. When it is necessary to adjust the spacing of the chord positioning frame 12, simply pull the plug handle 147 out of the limiting groove 148 and lift it upward to release the pressure of the first vertical connecting rod 143 on the limiting plate 133, and then push the chord positioning frame 12 to slide and adjust it again.

[0036] Example 2, refer to Figures 1 to 7This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides an integrated connection mechanism for an adjustable-spacing steel truss chord positioning fixture, solving the problem of not being able to adjust multiple chord positioning frames simultaneously. It includes an integrated connection mechanism comprising connecting rods 20 for connecting two adjacent chord positioning frames 12 for synchronous adjustment. Each side of the connecting rod 20 is provided with a push-pull assembly 21 for releasing the chord positioning frame 12 from further fixation. The push-pull assembly 21 includes a threaded rod 211 that is inserted into and limited by the connecting rod 20. A push block 212 is fixedly installed on the side away from the connecting rod 20 and slidably disposed on both sides of the inner cavity of the through groove 132. The push block 212 is located on the side of the limiting plate 133 and has two mutually abutting first inclined surface 213 and second inclined surface 214 that push the first vertical connecting rod 143 and the limiting plate 133 to rise and separate from the limiting plate 133 to release the fixed limit. The first inclined surface 213 is opened at the upper end of the push block 212 on the side of the limiting plate 133, and the second inclined surface 214 is opened at the lower end of the surface of the first vertical connecting rod 143 on the side of the push block 212.

[0037] A fixed back plate 215 is provided on the middle of the surface of the push block 212 away from the limiting plate 133, which is fixedly connected to the outer side wall of the through groove 132. The fixed back plate 215 is threadedly connected to the threaded rod 211.

[0038] Specifically, both ends of the connecting rod 20 are provided with hexagonal bolts for insertion into hexagonal bolt holes on the outer side of the threaded rod 211. The bolts have anti-slip textures on the outside. By inserting the bolts into the bolt holes of the threaded rod 211, the two adjacent chord positioning frames 12 can become a single unit that can move simultaneously. The threaded rod 211 and the connecting rod 20 are connected through threaded holes. Rotating the threaded rod 211 can adjust the position of the push block 212. The push block 212 is rectangular in shape, and the inclination angle between the first inclined surface 213 and the second inclined surface 214 is... The angles are all 45 degrees, which allows the push block 212 to efficiently convert the horizontal thrust into the vertical lifting force of the first vertical connecting rod 143 when it moves horizontally. The part of the through groove 132 that protrudes and mutually limits the first vertical connecting rod 143 does not exceed the sliding path of the push block 212. This ensures that when the push block 212 moves towards the limiting plate 133, it will not be interfered with by the limiting plate 133 and thus will not be unable to move normally. At the same time, the limiting plate 133 can also move backward normally and squeeze the first compression spring 135.

[0039] When it is necessary to adjust the spacing of multiple chord positioning brackets 12 simultaneously, the operator first pulls the plug handle 147 out of the limiting groove 148, and then uses a tool to insert into the hexagonal bolt hole on the outside of the threaded rod 211. Rotating the threaded rod 211 causes the push block 212 to move away from the fixed back plate 215. Since the threaded rod 211 is threadedly connected to the fixed back plate 215 and the fixed back plate 215 is fixed to the outer side wall of the through groove 132, the rotation of the threaded rod 211 will be converted into its own linear motion, thereby causing the push block 212 to move with the threaded rod 211. As it continues to move, the first inclined surface 213 and the second inclined surface 214 gradually approach each other and abut against each other. The second inclined surface 214 will be pushed upward under the continuous movement of the first inclined surface 213, thereby separating from the limiting plate 133 and releasing the limitation on the limiting plate 133.

[0040] Then, the connecting rod 20 is inserted into the threaded rod 211 on the two adjacent chord positioning frames 12, so that the two adjacent chord positioning frames 12 can become a whole. Since the limiting plate 133 is released at this time, when the chord positioning frame 12 is moved laterally, the limiting plate 133 can slide on the limiting rack 134, thereby allowing the two or more adjacent chord positioning frames 12 to slide on the I-beam base plate 11 for overall adjustment.

[0041] After adjusting to the predetermined position, pull out the connecting rod 20, then rotate the threaded rod 211 in the opposite direction to move the push block 212 away from the limiting plate 133. Then, by pushing the plug handle 147 downward, the first vertical connecting rod 143 and the limiting plate 133 continue to abut against each other and be limited, thus achieving a second fixation.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An adjustable-spacing steel truss chord positioning clamp, characterized in that: include, The fixing mechanism includes a truss body (10) and an I-beam base plate (11). The upper end of the I-beam base plate (11) is provided with a plurality of chord positioning frames (12) for supporting and clamping the I-beam base plate (11). The lower end of the chord positioning frames (12) is provided with a limiting mechanism (13) for initially fixing the plurality of chord positioning frames (12) after the distance is adjusted. The upper end of the limiting mechanism (13) is provided with a lifting and pressing assembly (14) for further fixing the chord positioning frames (12). The overall connection mechanism includes a connecting rod (20) for connecting and synchronously adjusting two adjacent chord positioning frames (12), and each side of the connecting rod (20) is provided with a push-pull assembly (21) for releasing the chord positioning frame (12) from further fixation.

2. The adjustable-spacing steel truss chord positioning clamp as described in claim 1, characterized in that: The limiting mechanism (13) includes an I-beam groove (131) that is slidably connected to the I-beam base plate (11) on both sides of the lower end of the chord positioning frame (12). A through groove (132) is provided in the middle of the outer side wall of the I-beam groove (131). A limiting plate (133) is slidably provided in the middle of one side of the through groove (132). A limiting rack (134) is fixedly provided in the middle of the I-beam base plate (11) at the front end of the limiting plate (133). The width of the groove between the limiting racks (134) is consistent with the width of the front end of the limiting plate (133). The front end of the limiting plate (133) is set as a semi-circle that can be disengaged from the limiting position.

3. The adjustable-spacing steel truss chord positioning clamp as described in claim 2, characterized in that: A plurality of first compression springs (135) are fixedly provided on the middle part of the surface of the limiting plate (133) away from the limiting rack (134) and are fixedly connected to the inner wall of the through groove (132). The plurality of first compression springs (135) are used to push the limiting plate (133) and the limiting rack (134) to insert and limit the positioning.

4. The adjustable-spacing steel truss chord positioning clamp as described in claim 1, characterized in that: The lifting and pressing assembly (14) includes a first vertical groove (141) opened on the upper end of the through groove (132) away from the I-shaped groove (131), and a second vertical groove (142) opened at the upper end of the first vertical groove (141). The first vertical groove (141) is slidably provided with a first vertical connecting rod (143) that abuts against the rear end surface of the limiting plate (133) for further fixation. A lower pressure plate (144) is fixedly provided at the upper end of the first vertical connecting rod (143) to drive the first vertical connecting rod (143) to move. A plurality of second compression springs (145) for driving the lower pressure plate (144) to reset are fixedly provided on the lower surface of the lower pressure plate (144).

5. The adjustable-spacing steel truss chord positioning clamp as described in claim 4, characterized in that: A second vertical connecting rod (146) for pushing the lower pressure plate (144) to move is fixedly provided in the middle of the upper surface of the lower pressure plate (144). A plug handle (147) for driving the second vertical connecting rod (146) to move up and down is slidably provided at the upper end of the second vertical connecting rod (146).

6. The adjustable-spacing steel truss chord positioning clamp as described in claim 5, characterized in that: The upper end of the second vertical groove (142) has two mutually symmetrically arranged limiting grooves (148). The limiting grooves (148) are used to limit the insertion of the plug handle (147). The distance between the two limiting grooves (148) is the travel distance of the first vertical connecting rod (143) and the limiting plate (133) when they abut and separate.

7. The adjustable-spacing steel truss chord positioning clamp as described in claim 1, characterized in that: The push-pull assembly (21) includes a threaded rod (211) that is inserted into and limited by the connecting rod (20). The threaded rod (211) is fixedly provided with a push block (212) on the side away from the connecting rod (20) and slidably disposed on both sides of the cavity of the through groove (132). The push block (212) is provided with two mutually abutting first inclined surface (213) and second inclined surface (214) on the side of the limiting plate (133) so that the push block (212) pushes the first vertical connecting rod (143) and the limiting plate (133) to rise and separate from the limiting plate (133) to release the fixed limitation. The first inclined surface (213) is opened at the upper end of the push block (212) on the side of the limiting plate (133), and the second inclined surface (214) is opened at the lower end of the surface of the first vertical connecting rod (143) on the side of the push block (212).

8. The adjustable-spacing steel truss chord positioning clamp as described in claim 7, characterized in that: The push block (212) is provided with a fixed back plate (215) on the middle of the side surface away from the limiting plate (133), which is fixedly connected to the outer side wall of the through groove (132). The fixed back plate (215) is threadedly connected to the threaded rod (211).

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