Double-block type sleeper stirrup welding clamp

Abstract

The utility model discloses a double-block type sleeper stirrup welding clamp, which belongs to the technical field of rail traffic engineering construction and comprises a base shell, four inner plates for supporting the inside of a stirrup are connected to the top of the base shell in a sliding manner, the inside of the stirrup is supported by the four inner plates, and the four inner plates and an outer plate are arranged, so that during actual operation, the stirrup can be welded to the outer plate through the inner plates, and the stirrup can be welded to the outer plate through the outer plate. The four inner plates can synchronously slide outwards, force is evenly applied from the interiors of the stirrups, and the stirrups are stably supported. Meanwhile, the four outer plates can synchronously slide inwards to perform balanced extrusion on the outer walls of the stirrups, so that the four corners in the stirrups can uniformly bear the supporting force from the inner plates and the extrusion force from the outer plates at the same time, uniform stress is ensured in the process of fixing the stirrups, and the stirrups are prevented from being damaged. The problem of deformation caused by too large or too small local stress is avoided, the service life of the structure in practical application is effectively prolonged, and potential safety hazards caused by structural deformation are reduced.

Description

Technical Field

[0001] The utility model relates to the field of rail transit engineering construction, in particular to a double-block type rail sleeper stirrup welding fixture. Background Art

[0002] With the rapid development of rail transit, the demand for double-block sleepers continues to grow, and higher requirements are placed on their quality and production efficiency. Double-block sleepers are made of steel skeletons and poured concrete. Stirrups, as an important part of the steel skeleton, play a key role in enhancing the structural strength of sleepers and preventing concrete cracking.

[0003] After massive searches, it was found that the prior art publication number is CN211939634U, which discloses a double-block sleeper stirrup welding fixture, which includes a fixed platform, and the sleeper stirrups are placed flat on the upper end surface of the fixed platform; a shaping lever is provided on the upper end surface of the fixed platform, and the shaping lever includes a first lever and a second lever distributed at right angles, and the first lever and the second lever respectively press against the two sides of the outer hook of the sleeper stirrup to fix the welding posture of the sleeper stirrup; the upper end surface of the fixed platform is also provided with a first clamping plate and a second clamping plate arranged opposite to each other, and the second clamping plate moves opposite to the first clamping plate to realize the grabbing of the sleeper stirrups, and the second clamping plate moves in the same direction as the first clamping plate to realize the lateral translation of the sleeper stirrups and press the sleeper stirrups against the second lever; a third clamping plate is also provided on the upper end surface of the fixed platform, and the third clamping plate pushes the sleeper stirrups to translate longitudinally and presses the sleeper stirrups against the first lever.

[0004] Therefore, based on the above search and in combination with the existing, when the above device is used to clamp and fix the outer wall of the device, when the first clamp, the second clamp and the third clamp clamp the outer wall of the stirrup, when the second clamp and the first clamp move at different speeds in the same direction, or when the longitudinal translation occurs, the thrust of the third clamp does not match the clamping force of the first and second clamps, the stirrups may be subjected to unbalanced external forces, thereby causing twisting or deformation. Moreover, due to the deformation of the stirrups, the heat and stress conditions of various parts during welding become complicated and uneven, which may result in failure to form good fusion at the welding joint, reduce the strength of the weld, and make the weld part prone to cracking during the use of the sleeper, affecting the service life and safety of the sleeper. Therefore, the utility model provides a double-block sleeper stirrup welding fixture to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide a double-block sleeper stirrup welding fixture to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: comprising a base shell, the top of the base shell is slidably connected with four inner plates for supporting the inside of the stirrups, and the inside of the stirrups is propped up by the four inner plates, the top of the base shell is slidably connected with four outer plates for clamping and fixing the outer wall of the stirrups, the top of the base shell is fixedly connected with four top blocks for lifting the stirrups, the stirrups are kept at a certain distance from the top of the base shell by the top blocks, thereby increasing the visual range of the operator, the top of the four top blocks are fixedly connected with bent plates for helping the stirrups to connect, the top of the stirrups is pressed by the bent plates, and the stirrups are helped to be accurately aligning.

[0007] Furthermore, the top of the base shell is slidably connected to two clamping plates 1, the inner cavities of the two clamping plates 1 are rotatably connected to a push plate 1 for pushing the inner plate to slide through a bearing, and one end of the four push plates 1 away from the two clamping plates 1 is fixedly connected to the inner plate.

[0008] Furthermore, the inner cavity of the base shell is rotatably connected to a gear, and the inner cavity of the base shell is slidably connected to two racks for pushing the clamp plate to slide, the two racks are respectively located at both ends of the gear, and both racks are meshed with the gear.

[0009] Furthermore, a square groove is provided in the inner cavity of the base shell, and the inner cavity of the square groove is slidably connected with two clamping plates 2 for pushing the outer plate to slide, and the inner cavities of the two clamping plates 2 are rotatably connected with push plates 2 for pushing the outer plate to slide through bearings.

[0010] Furthermore, the inner cavity of the base shell is slidably connected with a sliding plate for pushing the bent plate to flip, and four extension blocks are fixedly connected at both ends of the outer wall of the base shell. The inner cavities of the four extension blocks are fixedly connected with positioning shafts for positioning the bent plate.

[0011] Furthermore, four fixed sliding blocks are fixedly connected to the outer wall of the sliding plate, and the inner cavities of the four fixed sliding blocks are provided with strip grooves for providing sliding of the bent plate, and the inner cavities of the strip grooves are slidably connected to fixed shafts.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. By setting four inner plates and outer plates, in actual operation, the four inner plates can slide outward synchronously, apply force evenly from the inside of the stirrups, and hold up the stirrups steadily; at the same time, the four outer plates will also slide inward synchronously, and evenly squeeze the outer wall of the stirrups, ensuring that the four corners inside the stirrups can evenly bear the supporting force from the inner plates and the squeezing force from the outer plates at the same time, thereby ensuring uniform force in the process of fixing the stirrups, avoiding deformation problems caused by excessive or insufficient local force, effectively extending its service life in actual applications, and reducing safety hazards caused by structural deformation.

[0014] 2. By setting four bent plates on the outer wall of the base shell, after the top block lifts the stirrups, the top of the stirrups is pressed by the bent plates, which effectively corrects the slight deviations that may occur in the placement or preliminary operation of the stirrups, guides the stirrups to be accurately positioned, and achieves high-precision docking. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the whole of a double-block sleeper stirrup welding fixture;

[0016] Figure 2 It is a structural cross-sectional view of the base shell in a double-block sleeper stirrup welding fixture;

[0017] Figure 3 It is a structural diagram of a sliding plate in a double-block sleeper stirrup welding fixture;

[0018] Figure 4 The figure is a structural diagram of a rotating rod in a double-block sleeper stirrup welding fixture.

[0019] In the figure: 1, base shell; 2, inner plate; 3, outer plate; 4, top block; 5, bent plate; 201, rubber cushion; 202, clamping plate 1; 203, push plate 1; 204, gear; 205, rack; 206, motor; 207, slide groove; 208, square groove; 209, clamping plate 2; 210, push plate 2; 211, connecting plate; 212, rotating rod; 213, two-way thread groove; 214, motor; 215, oblique groove; 501, sliding plate; 502, extension block; 503, positioning shaft; 504, rubber pressure plate; 505, fixed slider; 506, strip groove; 507, fixed shaft; 508, square groove; 509, cylinder. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example 1: Please refer to Figure 1 to Figure 4A double-block rail sleeper stirrup welding fixture comprises a base shell 1, the top of the base shell 1 is slidably connected with four inner plates 2 for supporting the inside of the stirrups, and the inner plates 2 are respectively located at the four corners of the top of the base shell 1, and the inside of the stirrups is propped up by the four inner plates 2, so as to prevent the stirrups from being deformed when the stirrups are clamped and fixed, thereby affecting the shape and size accuracy of the stirrups, and the top of the base shell 1 is slidably connected with four outer plates 3 for clamping and fixing the outer wall of the stirrups, and the outer plates 3 correspond to the inner plates 2 respectively, and the stirrups are fixed to the top of the base shell 1 through the cooperation of the inner plates 2 and the outer plates 3, and at the same time, the inner plates 2 provide support force uniformly and stably from the inside to offset the pressure generated when the outer plates 3 are clamped, so as to prevent the stirrups from being deformed;

[0022] The outer surfaces of the inner plate 2 and the outer plate 3 are fixedly connected with a rubber pad 201 for increasing friction, and the rubber pad 201 ensures that the stirrups maintain a stable position during the welding process to prevent the stirrups from sliding relative to each other in the fixture. At the same time, the rubber pad 201 is soft in texture, which effectively avoids scratches, indentations and other damages caused by direct rigid contact between the inner plate 2 and the outer plate 3 and the stirrup surface, protects the integrity and quality of the stirrup surface, and prevents the mechanical properties and service life of the stirrups from being affected by surface damage;

[0023] The top of the base shell 1 is fixedly connected with four top blocks 4 for lifting the stirrups. The top blocks 4 keep the stirrups at a certain distance from the top of the base shell 1, thereby increasing the visual range of the operator, allowing the operator to observe the welding parts of the stirrups more clearly, and helping to promptly discover problems that occur during the welding process, such as weld defects, welding position deviations, etc. At the same time, the gap can facilitate the heat dissipation during welding. The tops of the four top blocks 4 are fixedly connected with bent plates 5 for helping the stirrups to connect. The bent plates 5 are used to press the tops of the stirrups to help the stirrups to be accurately aligned, ensuring that the gaps at the connecting parts are uniform, reducing welding defects caused by poor connecting, such as incomplete welding, uneven weld widths, and other problems, and improving the strength and stability of the welded joints.

[0024] See also Figure 1 to Figure 4 The top of the base shell 1 is slidably connected with two clamping plates 202, and the inner cavities of the two clamping plates 202 are rotatably connected with a push plate 203 for pushing the inner plate 2 to slide through bearings, and the four push plates 203 are fixedly connected to the inner plate 2 at one end away from the two clamping plates 202, and slide to both sides respectively through the two clamping plates 202. When the two clamping plates 202 slide to both sides respectively, the fixed connection between the push plate 203 and the inner plate 2 can synchronously push the four inner plates 2 to slide outward, thereby ensuring that the four corners inside the stirrup are supported simultaneously and evenly, ensuring that the stirrups are balanced in force when they are propped up, effectively preventing deformation caused by uneven force, maintaining the shape and dimensional accuracy of the stirrups, and meeting the strict requirements of the welding process for the fixation of the stirrups.

[0025] See also Figure 1 to Figure 4 The inner cavity of the base shell 1 is rotatably connected with a gear 204, and the inner cavity of the base shell 1 is slidably connected with two racks 205 for pushing the clamp plate 202 to slide. The two racks 205 are respectively located at the two ends of the gear 204, and the two racks 205 are meshed with the gear 204. Specifically, the top of the base shell 1 is fixedly connected with a motor 206 for driving the gear 204 to rotate, and the output shaft of the motor 206 passes through the base shell 1 and is fixedly connected to the top of the gear 204. The inner cavity of the base shell 1 is provided with a slide groove 207 for providing sliding of the rack 205. The rack 205 passes through the slide groove 207 and is fixedly connected to the bottom of the clamp plate 202, and then the output shaft of the driving motor 206 drives the gear 204 to rotate. When the gear 204 rotates, the two clamp plates 202 can be pushed to slide through the rack 205.

[0026] See also Figure 2 to Figure 4 The inner cavity of the base shell 1 is provided with a square groove 208, and the inner cavity of the square groove 208 is slidably connected to two clamping plates 209. The inner cavities of the two clamping plates 209 are rotatably connected to push plates 210 for pushing the outer plate 3 to slide through bearings. Specifically, the tops of the four push plates 210 are fixedly connected to connecting plates 211. The inner cavity of the base shell 1 is provided with an oblique groove 215 for providing sliding of the connecting plate 211, and the connecting plate 211 is located in the inner cavity of the oblique groove 215. The top of the connecting plate 211 is fixedly connected to the bottom of the outer plate 3. The inner cavity of the square groove 208 is rotatably connected to a rotating rod 212 for driving the clamping plate 209 to slide through a bearing. The outer wall of the rotating rod 212 is provided with a bidirectional threaded groove 213, and the two clamping plates 209 are both threadedly connected to the outer wall of the rotating rod 212, the inner cavity of the square groove 208 is fixedly installed with a motor 214 for driving the rotating rod 212 to rotate, and the output shaft of the motor 214 is fixedly connected to the rotating rod 212, and then by driving the motor 214, its output shaft drives the rotating rod 212 to rotate, so that the rotating rod 212 pushes the two clamping plates 209 to approach each other through the two-way thread groove 213. When the two clamping plates 1 202 slide, the four outer plates 3 are synchronously pushed to slide inward by the push plate 210 and the connecting plate 211, so as to ensure that the clamping of the stirrups is uniform and stable, avoid the displacement or deformation of the stirrups due to uneven clamping, and ensure the welding quality.

[0027] Example 2: Please refer to Figure 1 to Figure 3, a double-block rail sleeper stirrup welding fixture, which differs from Example 1 in that the inner cavity of the base shell 1 is slidably connected with a sliding plate 501 for pushing the bent plate 5 to flip, and four extension blocks 502 are fixedly connected at both ends of the outer wall of the base shell 1, and the inner cavities of the four extension blocks 502 are fixedly connected with positioning shafts 503 for positioning the bent plate 5. Specifically, the positioning shaft 503 is rotatably connected to the outer wall of the bent plate 5, and the inner cavity of the bent plate 5 is fixedly connected with a rubber pressure plate 504 for increasing friction, and the rubber pressure plate 504 is located above the top block 4, and the rubber pressure plate 504 itself is elastic and has a large friction coefficient. It can be in close contact with the surface of the stirrup, increase the friction between the stirrup, and enable the bent plate 5 to more firmly fix the stirrup when pressing the stirrup, prevent the stirrup from sliding or shifting due to vibration, external force and other factors during welding, and ensure the welding position accuracy of the stirrup.

[0028] See also Figure 1 to Figure 3 The outer wall of the sliding plate 501 is fixedly connected with four fixed sliders 505, and the inner cavity of the four fixed sliders 505 is provided with a strip groove 506 for providing sliding of the bent plate 5, and the inner cavity of the strip groove 506 is slidably connected with a fixed shaft 507. Specifically, there are two fixed shafts 507 respectively fixedly connected at both ends of the outer wall of the bent plate 5, and the inner cavity of the base shell 1 is provided with a square groove 508 for providing sliding of the sliding plate 501, and the inner cavity top of the square groove 508 is fixedly connected with a cylinder 509 for driving the sliding plate 501 to move upward, and then by driving the cylinder 509 to shrink, the sliding plate 501 is pulled upward, and the fixed slider 505 is driven upward at the same time, and then the bent plate 5 is pushed to flip around the positioning axis 503 through the fixed shaft 507.

[0029] Working principle: First, by driving the cylinder 509 to shrink, the sliding plate 501 is pulled up, and the fixed slider 505 is driven up at the same time, and then the bent plate 5 is pushed to flip around the positioning axis 503 to the outside through the fixed axis 507, and then the stirrups are placed on the top of the base shell 1, the outer walls of the four inner plates 2, and the inner cavities of the four outer plates 3, and at the same time, the drive motor 206 and the motor 214 are driven to drive the output shaft to drive the gear 204 to rotate. When the gear 204 rotates, the rack 205 can push the two splints 202 to slide to both sides respectively. When the two splints 202 slide to both sides respectively, the push plate 203 is fixedly connected to the inner plate 2, and the four inner plates 2 can be pushed outward synchronously. The four outer plates 3 are pushed inwards by the push plate 210 and the connecting plate 211 synchronously, and are clamped on the outer wall of the stirrups to fix the stirrups, and the cylinder 509 is driven again to expand, push the sliding plate 501 and the fixed slider 505 downwards, and then push the bent plate 5 to flip and reset around the positioning axis 503 through the fixed axis 507, and squeeze the top of the stirrups through the rubber pressure plate 504 to help the stirrups to be accurately aligned for welding.

[0030] The above description is only a preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present utility model according to the technical scheme and utility model concept of the present utility model, which should be covered by the protection scope of the present utility model.

Claims

1. A double-block sleeper stirrup welding fixture, comprising a base shell (1), characterized in that: The top of the base shell (1) is slidably connected to four inner plates (2) for supporting the inside of the stirrups, and the inside of the stirrups is propped up by the four inner plates (2). The top of the base shell (1) is slidably connected to four outer plates (3) for clamping and fixing the outer wall of the stirrups. The top of the base shell (1) is fixedly connected to four top blocks (4) for lifting the stirrups. The stirrups are kept at a certain distance from the top of the base shell (1) by the top blocks (4), thereby increasing the visual range of the operator. The tops of the four top blocks (4) are fixedly connected to bent plates (5) for helping the stirrups to dock. The bent plates (5) are used to press the tops of the stirrups to help the stirrups to be accurately aligned.

2. A double-block sleeper stirrup welding fixture according to claim 1, characterized in that: The top of the base shell (1) is slidably connected to two clamping plates (202); the inner cavities of the two clamping plates (202) are rotatably connected to push plates (203) for pushing the inner plate (2) to slide via bearings; and the ends of the four push plates (203) that are away from the two clamping plates (202) are fixedly connected to the inner plate (2).

3. A double-block sleeper stirrup welding fixture according to claim 2, characterized in that: The inner cavity of the base shell (1) is rotatably connected to a gear (204), and the inner cavity of the base shell (1) is slidably connected to two racks (205) for pushing the first clamping plate (202) to slide. The two racks (205) are respectively located at two ends of the gear (204), and both racks (205) are meshingly connected to the gear (204).

4. A double-block sleeper stirrup welding fixture according to claim 3, characterized in that: The inner cavity of the base shell (1) is provided with a square groove (208), and the inner cavity of the square groove (208) is slidably connected to two clamping plates (209) for pushing the outer plate (3) to slide. The inner cavities of the two clamping plates (209) are both rotatably connected to push plates (210) for pushing the outer plate (3) to slide via bearings.

5. A double-block sleeper stirrup welding fixture according to claim 1, characterized in that: The inner cavity of the base shell (1) is slidably connected to a sliding plate (501) for pushing the bent plate (5) to flip, and four extension blocks (502) are fixedly connected to both ends of the outer wall of the base shell (1), and the inner cavities of the four extension blocks (502) are fixedly connected to positioning shafts (503) for positioning the bent plate (5).

6. A double-block sleeper stirrup welding fixture according to claim 5, characterized in that: Four fixed sliding blocks (505) are fixedly connected to the outer wall of the sliding plate (501); the inner cavities of the four fixed sliding blocks (505) are provided with strip grooves (506) for providing sliding for the bent plate (5); and the inner cavities of the strip grooves (506) are slidably connected to fixed shafts (507).

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