A steel truss bridge member measuring device

Abstract

The utility model discloses a kind of steel truss bridge bar member measuring devices, it is related to steel truss bridge construction field, including the measuring operation platform for installing on measuring rack, the top surface of measuring operation platform is connected with the falling track structure for the bar member falling needing measurement for installation, measuring operation platform is opened in the falling end of falling track structure, and the falling passage for the bar member passing from falling track structure falling is set, the falling passage below is equipped with the receiving structure, and the receiving structure is used to connect with the bottom end of measuring operation platform;The falling track structure includes symmetrically arranged falling track, two The falling track is relatively movably arranged, and the two ends of the bar member needing measurement are respectively placed on the falling track for rolling and fall to falling passage through falling track, from falling passage to receiving structure falling. Through the measuring device, whether the length of bar member meets the requirement can be measured quickly, so as to ensure the progress and quality of construction.

Description

Technical Field

[0001] This utility model relates to the field of construction surveying for steel truss bridges, specifically a measuring device for steel truss bridge members. Background Technology

[0002] A steel truss bridge is a bridge structure that uses steel trusses as its main load-bearing components. It transfers loads through the axial forces of its members (upper chord, lower chord, and web members), combining the bending characteristics of a beam with the stability of a spatial structure. Its core components include the main truss, longitudinal connections, bridge portals, and the bridge deck system. The members primarily bear axial tension / compression, resulting in high material utilization and a self-weight 30%-40% lighter than concrete bridges, reducing foundation costs. Steel truss bridges can be designed with parallel chord trusses (uniform nodes), folded chord trusses (uniform force distribution), or triangular trusses (facilitating drainage). Members are prefabricated in the factory and assembled on-site with bolts (e.g., the 320-ton truss panels of the Yuhang Canal Bridge were hoisted as a whole), shortening the construction period by 60% compared to cast-in-place concrete.

[0003] Since the truss system of a steel truss bridge is constructed by splicing together members, different members act at different stress locations within the truss system. Therefore, in order to quickly distinguish and measure the different members for easy classification and connection, a device capable of measuring the size and length of members is needed during steel truss bridge construction to ensure the quality of the members used in construction. Utility Model Content

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A steel truss bridge member measuring device includes a measuring operation platform for mounting on a measuring frame. A drop track structure for the member to be measured to fall is installed and connected to the top surface of the measuring operation platform. A drop channel for the member falling from the drop track structure is opened at the drop end of the measuring operation platform for the member to pass through. A receiving structure is installed below the drop channel for connecting to the bottom end of the measuring operation platform.

[0006] The falling track structure includes symmetrically arranged falling tracks, with the two falling tracks being movably arranged relative to each other. The two ends of the rod to be measured are respectively placed on the falling tracks and fall through the falling tracks to the falling channel, and then fall from the falling channel to the receiving structure.

[0007] Preferably, the two falling tracks are respectively used to be installed and connected to the movable support frame, and the bottom of the two movable support frames away from the falling channel is movably inserted into the bottom movable shaft, and the middle part of the bottom movable shaft is used to connect to the measurement operation platform through the connecting block.

[0008] The two movable support frames are respectively provided with hydraulic rods at the ends away from the bottom movable axis for driving the movable support frames to move relative to each other along the bottom movable axis. One end of the hydraulic rod is used to connect to the movable support frame, and the other end of the hydraulic rod is used to connect to the support bracket. The support bracket is used to connect and fix to the measuring operation platform by bolts.

[0009] The bottoms of the two movable support frames are respectively movably threaded onto the top movable guide shaft, and the two ends of the top movable guide shaft are respectively used to connect to the support bracket.

[0010] Preferably, the two falling ports of the falling tracks are respectively provided with limit structures;

[0011] All of the limiting structures include a limiting movable rod;

[0012] A limiting movable seat is provided at one end of each of the two limiting movable rods that is far apart from each other. The limiting movable seat is used to connect and fix it to the movable support frame by bolts. A bolt adjusting rod is connected to one end of each of the two limiting movable rods that is far apart from each other. The end of the bolt adjusting rod that is far away from the limiting movable rod passes through the limiting movable seat.

[0013] Preferably, a flexible limiting plate is provided below the two falling tracks to limit the rod falling from the falling tracks. The flexible limiting plate has several limiting grooves for limiting the rod. The flexible limiting plate is used to be installed on the conveyor belt. Conveying rollers are driven at both ends of the conveyor belt. The conveying rollers are rotatably connected to the mounting base through bearings. The mounting base is used to be connected and fixed to the measuring operation platform.

[0014] One of the two conveying rollers is connected to a drive shaft, and a connecting pulley is connected to the drive shaft. The connecting pulley is connected to the drive pulley via a belt drive. The drive pulley is connected to the output end of a servo motor via the shaft. The servo motor drives the drive pulley to rotate. The housing of the servo motor is connected and fixed to the measurement operation platform via a motor bracket.

[0015] Preferably, the flexible limiting plate is provided with a blocking structure at one end near the falling channel;

[0016] The blocking structure includes a blocking limiting block, which is movably disposed on the side of the conveyor belt near the falling channel, and is used to block and limit the rod in the limiting groove of the flexible limiting plate.

[0017] The end of the blocking and limiting block away from the flexible limiting plate is provided with a movable structure for driving the blocking and limiting block to move.

[0018] Preferably, the movable structure includes a movable cylinder;

[0019] The cylinder body of the movable cylinder is used to connect with the measurement operation platform. The output end rod of the movable cylinder is connected to the movable block. A movable guide shaft is provided on the movable block. The two ends of the movable guide shaft pass through the movable guide plate, and the movable guide plate is used to connect and fix with the measurement operation platform.

[0020] The stop and limit block is used to connect to the movable guide shaft.

[0021] Preferably, the receiving structure includes a receiving chute;

[0022] The receiving chute is installed below the falling channel to receive the rods passing through the falling channel;

[0023] The receiving chute is connected and fixed to the bottom of the measuring operation platform via a bracket.

[0024] Preferably, the end of the receiving chute away from the falling channel is provided with a movable track for supporting and limiting the rod falling from the receiving chute, and the movable track is connected to a support plate, which is connected and fixed to the measuring frame through a support base;

[0025] A movable push plate is slidably mounted on the movable track. A movable cylinder for driving the movable push plate is connected to the top of the movable push plate. The movable cylinder is connected and fixed to the support plate through a bracket.

[0026] The beneficial effects of this utility model are as follows: The purpose of this utility model is to provide a steel truss bridge member measuring device, which is used to measure and detect whether the members used to connect the steel truss bridge meet the requirements; through this measuring device, the length of the members can be quickly measured to ensure the progress and quality of construction. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the connection structure of a steel truss bridge member measuring device according to the present invention;

[0028] Figure 2 This is an exploded view of the connection structure of a steel truss bridge member measuring device according to the present invention;

[0029] Figure 3 This is a schematic diagram of the connection structure between the measuring operation platform and the conveyor belt of a steel truss bridge member measuring device according to this utility model;

[0030] Figure 4 This is a schematic diagram of the connection structure of the drop track of the measuring device for steel truss bridge members according to this utility model;

[0031] Figure 5This is a schematic diagram of the connection structure of the receiving structure of the measuring device for steel truss bridge members according to this utility model;

[0032] In the diagram, 1-measuring operation platform, 2-falling track, 3-servo motor, 4-telescopic cylinder, 11-movable support frame, 12-bottom movable shaft, 13-support bracket, 14-top movable guide shaft, 15-limiting movable rod, 16-limiting movable seat, 32-connecting pulley, 33-drive pulley, 34-movable cylinder, 35-movable guide shaft, 36-movable guide plate, 41-receiving chute, 42-movable track, 43-movable push plate, 151-bolt adjusting rod. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0034] Example 1

[0035] like Figures 1 to 5 As shown, a steel truss bridge member measuring device is disclosed. This measuring device is used to measure and detect whether the members used to connect the steel truss bridge meet the requirements (including whether the length meets the requirements). The measuring device includes a measuring operation platform 1 mounted on a measuring frame. A drop track structure for the member to be measured is installed on the top surface of the measuring operation platform 1. A drop channel is provided at the drop end of the drop track structure for the member to pass through. A receiving structure is installed below the drop channel and is connected to the bottom end of the measuring operation platform. The drop track structure includes symmetrically arranged drop tracks 2, which are movably arranged relative to each other. The two ends of the member to be measured are respectively placed on the drop tracks 2 and fall through the drop tracks 2 to the drop channel, and then fall from the drop channel to the receiving structure.

[0036] In this embodiment, segments of the same type of rod (in this embodiment, the same type of rod refers to the same type of chord, web member, etc.) are sequentially dropped through two relatively adjustable drop tracks 2; then they pass through the drop channel and fall onto the receiving structure; by adjusting the relative position of the two drop tracks 2, the length of the rod falling through the two drop tracks 2 is controlled and adjusted, and the rod length is observed and judged sequentially to see if it meets the requirements.

[0037] Example 2

[0038] Based on Embodiment 1, two falling tracks 2 are respectively installed and connected to the movable support frame 11, and the bottom of the two movable support frames 11, away from the falling channel, is movably inserted through the bottom movable shaft 12, and the middle of the bottom movable shaft 12 is connected to the measurement operation platform 1 through a connecting block; the two movable support frames 11, away from the bottom movable shaft 12, are respectively provided with hydraulic rods for driving the movable support frames 11 to move relative to each other along the bottom movable shaft, one end of the hydraulic rod is used to connect to the movable support frame 11, and the other end of the hydraulic rod is used to connect to the support bracket 13, and the support bracket 13 is used to connect and fix to the measurement operation platform 1 through bolts; the bottom of the two movable support frames 11 is respectively movably inserted through the top movable guide shaft 14, and the two ends of the top movable guide shaft 14 are respectively used to connect to the support bracket 13.

[0039] In this embodiment, by controlling the "extension and retraction" of the hydraulic rods, the movable support frame 11 is moved relative to each other, thereby controlling the length of the rod passing through the two falling tracks 2. If the rod exceeds the allowable range, it will get stuck between the two falling tracks 2. In this case, the excessive rod is removed from the two falling tracks 2, recut, and then measured and tested again by the measuring device. If the rod is shorter than the allowable range, it will fall directly through the "gap" between the two falling tracks 2. The fallen rod is then processed uniformly.

[0040] Example 3

[0041] Furthermore, the two falling ports of the two falling tracks 2 are respectively provided with limit structures; each limit structure includes a limit movable rod 15; a limit movable seat 16 is provided at the ends of the two limit movable rods 15 that are far apart from each other, and the limit movable seat 16 is used to connect and fix to the movable support frame 11 by bolts. A bolt adjusting rod 151 is connected to the ends of the two limit movable rods 15 that are far apart from each other, and the end of the bolt adjusting rod 151 that is far away from the limit movable rod 15 moves through the limit movable seat 16.

[0042] Meanwhile, flexible limiting plates are provided below the two falling tracks 2 to limit the rods falling from the falling tracks 2. The flexible limiting plates have several limiting grooves for limiting the rods. The flexible limiting plates are installed on the conveyor belt. Conveying rollers are installed at both ends of the conveyor belt. The conveying rollers are rotatably connected to the mounting base through bearings. The mounting base is used to connect and fix to the measurement operation platform 1. One of the two conveying rollers is connected to a drive shaft. A connecting pulley 32 is connected to the drive shaft. The connecting pulley 32 is connected to a drive pulley 33 through a belt drive. The drive pulley 33 is connected to the output end of the servo motor 3 through the shaft. The servo motor 3 drives the drive pulley 33 to rotate. The housing of the servo motor 3 is connected and fixed to the measurement operation platform 1 through the motor bracket.

[0043] Furthermore, a blocking structure is provided at the end of the flexible limiting plate near the falling channel; the blocking structure includes a blocking limiting block, which is movably disposed on the side of the conveyor belt near the falling channel to block and limit the rod in the limiting groove of the flexible limiting plate; a movable structure is provided at the end of the blocking limiting block away from the flexible limiting plate to drive the blocking limiting block to move. This movable structure includes a movable cylinder 34; the cylinder body of the movable cylinder 34 is used to connect to the measuring operation platform 1, the output rod of the movable cylinder 34 is connected to the movable block, a movable guide shaft 35 is provided on the movable block, the two ends of the movable guide shaft 35 respectively movably pass through the movable guide plate 36, and the movable guide plate 36 is used to connect and fix to the measuring operation platform 1; the blocking limiting block is used to connect to the movable guide shaft 35.

[0044] In this embodiment, when a rod falls from between the two falling tracks 2 onto the flexible limiting plate and rolls into any of the limiting slots on the flexible limiting plate, the servo motor 3 drives the drive pulley 33 to rotate. The drive pulley 33 then drives the connecting pulley 32 to rotate via a belt. The connecting pulley 32 then drives one of the conveyor rollers to rotate, and with the transmission action of the other conveyor roller, the conveyor belt rotates, causing the flexible limiting plate on the conveyor belt to rotate with the conveyor belt. This, in turn, causes the rod to move in the limiting slot on the flexible limiting plate to the falling channel of the measuring operation platform 1. To ensure that the rod falls smoothly from the falling channel onto the receiving structure, the relative positions of the two limiting movable rods 15 and the position of the blocking limiting block of the blocking structure are adjusted appropriately. This allows the rod in the limiting slot of the flexible limiting plate to fall from the falling channel onto the receiving structure as it passes the "conveying end" of the conveyor belt.

[0045] Example 4

[0046] Furthermore, the receiving structure includes a receiving chute 41; the receiving chute 41 is used to be set below the falling channel to receive the rod passing through the falling channel; the receiving chute 41 is connected and fixed to the bottom end of the measuring operation platform 1 by a bracket.

[0047] A movable track 42 is provided at the end of the receiving chute 41 away from the falling channel to support and limit the rod falling from the receiving chute 41. The movable track 42 is connected to a support plate, which is connected and fixed to the measuring frame through a support base. A movable push plate 43 is slidably installed on the upper part of the movable track 42. A telescopic cylinder 4 is connected to the top of the movable push plate 43 to drive the movable push plate 43. The telescopic cylinder 4 is connected and fixed to the support plate through a bracket.

[0048] In this embodiment, when a rod falls through the drop channel, it falls onto the movable track 42 via the receiving chute 41 of the receiving structure. In order to facilitate the movement and handling of the "qualified" rod, the movable push plate 43 is moved by controlling the telescopic cylinder 4 to move the rod on the movable track 42 to a certain distance from the measuring frame. Then, it is manually moved and transported to the designated position for use.

Claims

1. A measuring device for steel truss bridge members, comprising a measuring operation platform mounted on a measuring frame, characterized in that, The top surface of the measurement operation platform is equipped with a falling track structure for the rod to be measured to fall. The measurement operation platform has a falling channel at the falling end of the falling track structure for the rod to pass through. A receiving structure is installed below the falling channel and is used to connect to the bottom end of the measurement operation platform. The falling track structure includes symmetrically arranged falling tracks, with the two falling tracks being movably arranged relative to each other. The two ends of the rod to be measured are respectively placed on the falling tracks and fall through the falling tracks to the falling channel, and then fall from the falling channel to the receiving structure.

2. The steel truss bridge member measuring device according to claim 1, characterized in that, The two falling tracks are respectively used to be installed and connected to the movable support frame, and the bottom of the two movable support frames away from the falling channel is movably inserted through the bottom movable shaft, and the middle of the bottom movable shaft is used to connect to the measurement operation platform through the connecting block. The two movable support frames are respectively provided with hydraulic rods at the ends away from the bottom movable axis for driving the movable support frames to move relative to each other along the bottom movable axis. One end of the hydraulic rod is used to connect to the movable support frame, and the other end of the hydraulic rod is used to connect to the support bracket. The support bracket is used to connect and fix to the measuring operation platform by bolts. The bottoms of the two movable support frames are respectively movably threaded onto the top movable guide shaft, and the two ends of the top movable guide shaft are respectively used to connect to the support bracket.

3. The steel truss bridge member measuring device according to claim 2, characterized in that, The two drop ports of the drop tracks are each equipped with a limit structure; All of the limiting structures include a limiting movable rod; A limiting movable seat is provided at one end of each of the two limiting movable rods that is far apart from each other. The limiting movable seat is used to connect and fix it to the movable support frame by bolts. A bolt adjusting rod is connected to one end of each of the two limiting movable rods that is far apart from each other. The end of the bolt adjusting rod that is far away from the limiting movable rod passes through the limiting movable seat.

4. The steel truss bridge member measuring device according to claim 3, characterized in that, Below the two falling tracks, there are flexible limiting plates for limiting the rods falling from the falling tracks. The flexible limiting plates have several limiting grooves for limiting the rods. The flexible limiting plates are installed on the conveyor belt. The two ends of the conveyor belt are equipped with conveyor rollers. The conveyor rollers are rotatably connected to the mounting base through bearings. The mounting base is used to connect and fix to the measuring operation platform. One of the two conveying rollers is connected to a drive shaft, and a connecting pulley is connected to the drive shaft. The connecting pulley is connected to the drive pulley via a belt drive. The drive pulley is connected to the output end of a servo motor via the shaft. The servo motor drives the drive pulley to rotate. The housing of the servo motor is connected and fixed to the measurement operation platform via a motor bracket.

5. A steel truss bridge member measuring device according to claim 4, characterized in that, The flexible limiting plate is provided with a blocking structure at one end near the falling channel; The blocking structure includes a blocking limiting block, which is movably disposed on the side of the conveyor belt near the falling channel, and is used to block and limit the rod in the limiting groove of the flexible limiting plate. The end of the blocking and limiting block away from the flexible limiting plate is provided with a movable structure for driving the blocking and limiting block to move.

6. The steel truss bridge member measuring device according to claim 5, characterized in that, The movable structure includes a movable cylinder; The cylinder body of the movable cylinder is used to connect with the measurement operation platform. The output end rod of the movable cylinder is connected to the movable block. A movable guide shaft is provided on the movable block. The two ends of the movable guide shaft pass through the movable guide plate, and the movable guide plate is used to connect and fix with the measurement operation platform. The stop and limit block is used to connect to the movable guide shaft.

7. The steel truss bridge member measuring device according to claim 1, characterized in that, The receiving structure includes a receiving chute; The receiving chute is installed below the falling channel to receive the rods passing through the falling channel; The receiving chute is connected and fixed to the bottom of the measuring operation platform via a bracket.

8. A steel truss bridge member measuring device according to claim 7, characterized in that, The receiving chute is provided with a movable track at the end away from the falling channel to support and limit the rod falling from the receiving chute. The movable track is connected to a support plate, and the support plate is connected and fixed to the measuring frame through a support base. A movable push plate is slidably mounted on the movable track. A movable cylinder for driving the movable push plate is connected to the top of the movable push plate. The movable cylinder is connected and fixed to the support plate through a bracket.

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