Welding fixture for crane girder

Abstract

The utility model relates to the technical field of machining, concretely discloses a welding tool for crane girder, including the bottom plate, the end surface of bottom plate is equipped with two equipment boxes, two equipment boxes between install the mounting plate, the end surface of mounting plate is equipped with two clamping mechanisms, the clamping mechanism includes the rectangular plate fixedly connected in the end surface of mounting plate, the end surface of rectangular plate is equipped with the rectangular groove, the inner wall of rectangular groove is fixedly connected with the rectangular block, the utility model discloses through the rotation screw rod, two clamps move simultaneously, realize the clamping of the girder, and the clamping force of two clamps is same, avoids the situation that the girder is not stable that the fastening force of the clamp on the both sides of girder is different as far as possible, in the process of clamp movement, through the pushing of top plate, can extrude the inside of girder through the top plate, namely only through the rotation screw rod, makes two clamps extrude and fasten the both sides of girder.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical processing technology, specifically relating to welding fixtures for crane main beams. Background Technology

[0002] The main end beam of a crane is a core component of the crane's metal structure and a key component connecting the main beam to the running mechanism (such as the wheel set). During the processing of the main beam, workers need to weld various parts.

[0003] Welding fixtures are specially designed and manufactured auxiliary devices used to precisely fix, position, and clamp the workpieces to be welded during the welding process.

[0004] During the current clamping operation of the main beam, since the internal partitions of the main beam have not yet been welded and fixed, the entire main beam structure is insufficient in terms of lateral support strength. If the clamping mechanism applies too much force at this time, the cover plates on both sides of the main beam are prone to displacement and deformation due to uneven force, causing the originally parallel edges to tilt, affecting the subsequent welding of the partitions, and causing problems such as uneven gaps and misalignment between the partitions and the mating surfaces of the two side plates. Utility Model Content

[0005] The purpose of this utility model is to provide a welding fixture for the main beam of a crane, so as to solve the problem that the existing welding fixtures are prone to displacement of the cover plates on both sides of the main beam when the clamping force is too large during the clamping operation.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] Welding fixtures for crane main beams include a base plate with two equipment boxes mounted on its end face. A mounting plate is installed between the two equipment boxes. The end face of the mounting plate has two clamping mechanisms. Each clamping mechanism includes a rectangular plate fixedly connected to the end face of the mounting plate. A rectangular groove is formed on the end face of the rectangular plate. A rectangular block is fixedly connected to the inner wall of the rectangular groove. A screw is rotatably connected to the surface of the rectangular block. Two clamping plates are threaded to the arc surface of the screw. Two round rods are provided on the surface of the two clamping plates. A top plate is provided on the arc surface of the round rods. A connecting rod is fixedly connected to the surface of the top plate. A slider is fixedly connected to the end of the connecting rod away from the top plate. A ring track is fixedly connected to the side of the clamping plate near the top plate. The slider is slidably connected inside the ring track.

[0008] Preferably, both clamping plates are slidably connected to the inner wall of the rectangular groove, and the arc surface of the screw is provided with two sections of opposite threads from the middle to both ends, and the two clamping plates are symmetrically distributed on the arc surface of the screw.

[0009] Preferably, the end face of the rectangular plate is fixedly connected to four uprights, the four uprights are in pairs, and the two round rods are respectively fixedly connected to the top of the two pairs of uprights.

[0010] Preferably, the clamping plate is slidably connected to the arc surfaces of the two round rods, and the annular track is slidably connected to the arc surfaces of the round rods.

[0011] Preferably, the surface of the top plate is provided with a groove, the inner wall of the groove is slidably connected with a locking block, and the inner wall of the groove is provided with two springs, the two ends of the springs being fixedly connected to the locking block and the inner wall of the groove, respectively.

[0012] Preferably, the surface of the top plate is fixedly connected to two fixing blocks, and the end faces of the two fixing blocks are slidably inserted with snap-fit ​​components. The end faces of the snap-fit ​​blocks have two slots that cooperate with the snap-fit ​​components.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model achieves clamping of the main beam by rotating the screw and moving the two clamping plates simultaneously. The clamping force of the two clamping plates is the same, which avoids the instability of the main beam caused by different clamping forces on both sides of the main beam. During the movement of the clamping plates, the top plate can be pushed to compress the inner side of the main beam. That is, the rotation of the screw alone can compress and tighten the two clamping plates on the outer sides of the main beam. At the same time, the two top plates can also compress the inner sides of the main beam, preventing the clamping force of the clamping plates from being too large and causing the main beam to shift on both sides.

[0015] 2. This utility model utilizes the elastic force of a spring to give the locking block a telescopic space for movement. When the locking block first contacts the inner side of the main beam, the clamping plate can continue to move and press against the outer side of the main beam within the telescopic space of the locking block. With the engagement of the locking member and the locking groove, the position of the locking block can be secured. When the locking block and the clamping plate contact the main beam simultaneously, the stability of the locking block can be improved. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a partial structural schematic diagram of the clamping mechanism of this utility model;

[0018] Figure 3 This utility model Figure 2 Partial structural diagram;

[0019] Figure 4 This is a schematic diagram showing the disassembled structure of the top plate and the card block of this utility model.

[0020] In the diagram: 1. Base plate; 101. Equipment box; 102. Mounting plate; 2. Clamping mechanism; 201. Rectangular plate; 202. Rectangular groove; 203. Rectangular block; 204. Clamping plate; 205. Screw; 206. Upright pole; 207. Round rod; 208. Top plate; 209. Connecting rod; 210. Slider; 211. Circular track; 212. Groove; 213. Locking block; 214. Spring; 215. Fixing block; 216. Snap-fit ​​component; 217. Slot. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figures 1-4 As shown, this utility model provides a welding fixture for the main beam of a crane, including a base plate 1, two equipment boxes 101 are installed on the end face of the base plate 1, and an installation plate 102 is installed between the two equipment boxes 101.

[0023] In this embodiment, both the equipment box 101 and the mounting plate 102 are existing technologies and will not be described in detail here. The two equipment boxes 101 are of different heights so that the main beam can be placed on the mounting plate 102.

[0024] The end face of the mounting plate 102 is provided with two clamping mechanisms 2. The clamping mechanism 2 includes a rectangular plate 201 fixedly connected to the end face of the mounting plate 102. A rectangular groove 202 is opened on the end face of the rectangular plate 201. A rectangular block 203 is fixedly connected to the inner wall of the rectangular groove 202. A screw 205 is rotatably connected to the surface of the rectangular block 203. Two clamping plates 204 are threadedly connected to the arc surface of the screw 205. Two round rods 207 are provided on the surface of the two clamping plates 204. A top plate 208 is provided on the arc surface of the round rods 207. A connecting rod 209 is fixedly connected to the surface of the top plate 208. A slider 210 is fixedly connected to the end of the connecting rod 209 away from the top plate 208. An annular track 211 is fixedly connected to the side of the clamping plate 204 near the top plate 208. The slider 210 is slidably connected inside the annular track 211.

[0025] In this embodiment, the clamping plate 204 is slidably connected to the two round rods 207, and the top plate 208 is both slidably and rotatably connected to the round rods 207. Both clamping plates 204 are slidably connected to the inner wall of the rectangular groove 202. The arc surface of the screw 205 is provided with two sections of opposite threads from the middle to both ends. The two clamping plates 204 are symmetrically distributed on the arc surface of the screw 205. Only by rotating the screw 205 can the two clamping plates 204 press and tighten the outer sides of the main beam. At the same time, the two top plates 208 can also press the inner sides of the main beam to prevent the clamping force of the clamping plates 204 from being too large, which would cause the sides of the main beam to shift.

[0026] In an optional embodiment: four uprights 206 are fixedly connected to the end face of the rectangular plate 201, the four uprights 206 are in pairs, and two round rods 207 are fixedly connected to the top ends of the two pairs of uprights 206 respectively.

[0027] In an optional embodiment: the clamping plate 204 is slidably connected to the arc surfaces of the two round rods 207, and the annular track 211 is slidably connected to the arc surfaces of the round rods 207.

[0028] In an optional embodiment: a groove 212 is provided on the surface of the top plate 208, a locking block 213 is slidably connected to the inner wall of the groove 212, and two springs 214 are provided on the inner wall of the groove 212, with the two ends of the springs 214 being fixedly connected to the locking block 213 and the inner wall of the groove 212, respectively.

[0029] It should be noted that the locking block 213 serves to prevent the clamping plate 204 from contacting the main beam before the top plate 208. When the locking block 213 contacts the main beam before the clamping plate 204, the locking block 213 is squeezed and slides inward, and the spring 214 is in a compressed state until the clamping plate 204 contacts the outside of the main beam. At this time, the locking block 213 will also slide into the groove 212. The clamping plate 204 will exert an inward force on the main beam, while the top plate 208 will exert an outward force on the main beam, thereby restricting the cover plates on both sides of the main beam and making it difficult for the cover plates on both sides of the main beam to shift.

[0030] In an optional embodiment: two fixing blocks 215 are fixedly connected to the surface of the top plate 208, and the end faces of the two fixing blocks 215 are slidably inserted with snap-fit ​​members 216. The end faces of the snap-fit ​​blocks 213 are provided with two snap-fit ​​grooves 217 that cooperate with the snap-fit ​​members 216.

[0031] It should be noted that if the locking block 213 and the clamping plate 204 contact the main beam at the same time, pressing the locking member 216 will insert the two ends of the bottom of the locking member 216 into the two locking slots 217, which will stabilize the position of the locking block 213 and improve the stability of the locking block 213.

[0032] The working principle of this utility model is as follows: In use, the operator places the main beam on the mounting plate 102 using a tool. First, the top plate 208 is rotated. When the top plate 208 rotates, it drives the slider 210 to slide along the inside of the annular track 211. After rotating the top plate 208 to a position that does not affect the movement of the main beam, the main beam is pushed so that it passes between the two clamping plates 204. After the main beam is in place, the top plate 208 is rotated down again, and then the screw 205 is turned. Driven by the screw thread, the two clamping plates 204 move towards each other. At the same time, the two top plates 208 move with the movement of the two clamping plates 204. If the locking block 213 contacts the clamping plate 204 first... When the main beam is pressed, the locking block 213 slides inward under pressure, and the spring 214 is in a compressed state until the clamping plate 204 contacts the outside of the main beam. At this time, the locking block 213 will also slide into the groove 212. The clamping plate 204 will exert an inward force on the main beam, while the top plate 208 will exert an outward force on the main beam, thereby restricting the cover plates on both sides of the main beam and making it difficult for the cover plates on both sides of the main beam to shift. If the locking block 213 and the clamping plate 204 contact the main beam at the same time, the locking member 216 is pressed, so that the two ends of the bottom of the locking member 216 are inserted into the two locking slots 217, which stabilizes the position of the locking block 213. After the main beam is stabilized, the workers can weld the main beam with tools.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, whether directly or indirectly applied to other related technical fields, are similarly within the scope of protection of this utility model patent.

Claims

1. A welding tool for a crane girder, comprising a base plate (1), two equipment boxes (101) are mounted on the end face of the base plate (1), and a mounting plate (102) is mounted between the two equipment boxes (101), characterized in that, The mounting plate (102) has two clamping mechanisms (2) on its end face. Each clamping mechanism (2) includes a rectangular plate (201) fixedly connected to the end face of the mounting plate (102). A rectangular groove (202) is formed on the end face of the rectangular plate (201). A rectangular block (203) is fixedly connected to the inner wall of the rectangular groove (202). A screw (205) is rotatably connected to the surface of the rectangular block (203). Two clamping plates (204) are threadedly connected to the arc surface of the screw (205). The surface of the clamping plate (204) is provided with two round rods (207), and the arc surface of the round rods (207) is provided with a top plate (208). A connecting rod (209) is fixedly connected to the surface of the top plate (208). A slider (210) is fixedly connected to the end of the connecting rod (209) away from the top plate (208). A ring track (211) is fixedly connected to the side of the clamping plate (204) near the top plate (208). The slider (210) is slidably connected inside the ring track (211).

2. A welding fixture for a crane girder according to claim 1, characterized in that: Both clamping plates (204) are slidably connected to the inner wall of the rectangular groove (202). The arc surface of the screw (205) is provided with two sections of opposite threads from the middle to both ends. The two clamping plates (204) are symmetrically distributed on the arc surface of the screw (205).

3. The welding fixture for a crane main beam according to claim 1, characterized in that: The rectangular plate (201) has four uprights (206) fixedly connected to its end face. The four uprights (206) are in pairs, and the two round rods (207) are fixedly connected to the top of the two pairs of uprights (206).

4. The welding fixture for a crane main beam according to claim 1, characterized in that: The clamping plate (204) is slidably connected to the arc surfaces of the two round rods (207), and the annular track (211) is slidably connected to the arc surfaces of the round rods (207).

5. The welding fixture for a crane main beam according to claim 1, characterized in that: The surface of the top plate (208) is provided with a groove (212), and a locking block (213) is slidably connected to the inner wall of the groove (212). Two springs (214) are provided on the inner wall of the groove (212), and the two ends of the springs (214) are fixedly connected to the locking block (213) and the inner wall of the groove (212) respectively.

6. The welding fixture for a crane main beam according to claim 5, characterized in that: Two fixing blocks (215) are fixedly connected to the surface of the top plate (208). The end faces of the two fixing blocks (215) are slidably inserted with snap-fit ​​pieces (216). The end face of the snap-fit ​​piece (213) has two snap-fit ​​grooves (217) that cooperate with the snap-fit ​​pieces (216).

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