Rubber mat replacing device for traction device of contact network operation vehicle

Abstract

The utility model relates to the technical field of railway maintenance equipment, and discloses a rubber mat replacement device for a traction device of an overhead line system working vehicle, which comprises a first adjustable positioning frame assembly, a second adjustable positioning frame assembly, a first supporting rod assembly and a second supporting rod assembly, wherein the first adjustable positioning frame assembly comprises a first adjustable frame and a first supporting rod assembly arranged at the bottom of the first adjustable frame; the first adjustable frame comprises a first upper supporting steel plate and a first lower supporting steel plate which are vertically arranged in parallel, and the two sides of the first upper supporting steel plate and the two sides of the first lower supporting steel plate are connected through a first left adjusting screw and a first right adjusting screw. The heights of the first right adjusting screw rod and the first supporting rod assembly are adjusted by adjusting the first left adjusting screw rod; the second adjustable positioning frame assembly and the first adjustable positioning frame assembly are the same in structure. A fulcrum adjusting assembly; and the first adjustable positioning frame assembly and the second adjustable positioning frame assembly are connected. The rubber mat replacing device for the traction device of the contact network operation vehicle is high in adaptability, safe and reliable.

Description

Technical Field

[0001] This utility model belongs to the technical field of railway maintenance equipment, specifically relating to a rubber pad replacement device for the traction device of a catenary work vehicle. Background Technology

[0002] In the maintenance of the overhead contact line work vehicle's tow bar device, replacing the crank arm rubber pad is a key step in ensuring the stability of traction force transmission.

[0003] However, the industry currently lacks specialized tools, and maintenance personnel generally use a makeshift solution of "double jacks + wooden pads," or even rely on crowbars and hammers for forced operations. Specifically, this involves cutting wooden pads on-site to match the crank arm's dimensions, using two ordinary jacks to lift the crank arm, placing a wooden block in the middle to adjust the height, then inverting the jacks onto the vehicle body to press the crank arm in the opposite direction to release pressure. This requires a designated person to secure the pads to prevent slippage. The old rubber pads are then manually removed and new ones installed. Alternatively, a crowbar is used to forcibly pry open the tow bar to create space, then a hammer is used to strike the tow bar or crank arm to forcibly remove the old rubber pads, followed by striking or prying in the opposite direction to install the new pads. This approach not only suffers from poor tool compatibility and low efficiency but also significantly increases the risk of injury to operators and damage to components. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the deficiencies and defects mentioned in the background art above, and to provide a rubber pad replacement device for the traction device of the overhead contact line operation vehicle that is highly adaptable, safe and reliable.

[0005] To solve the above-mentioned technical problems, the technical solution proposed by this utility model is: a rubber pad replacement device for the traction device of a catenary work vehicle, including a fulcrum adjustment component and a first adjustable positioning frame component and a second adjustable positioning frame component symmetrically connected on both sides of the fulcrum adjustment component;

[0006] The first adjustable positioning frame assembly includes a first adjustable frame and a first support rod assembly disposed at the bottom of the first adjustable frame; the first adjustable frame includes a first upper support steel plate and a first lower support steel plate arranged parallel to each other, and the two sides of the first upper support steel plate and the first lower support steel plate are connected by a first left adjusting screw and a first right adjusting screw; and the height of the first support rod assembly of the first right adjusting screw is adjusted by adjusting the first left adjusting screw;

[0007] The second adjustable positioning frame assembly includes a second adjustable frame and a second support rod assembly disposed at the bottom of the second adjustable frame; the second adjustable frame includes a second upper support steel plate and a second lower support steel plate arranged parallel to each other, the two sides of the second upper support steel plate and the first lower support steel plate are connected by a second left adjusting screw and a second right adjusting screw; and the height of the second support rod assembly is adjusted by adjusting the second left adjusting screw and the second right adjusting screw.

[0008] In one embodiment, the first support rod assembly includes, from top to bottom, a first upper support screw, a first sleeve, a first lower support screw, a first base connected in sequence, and a first upper limit screw fitted onto the first upper support screw; the first upper support screw is fixed to the bottom of the first lower support steel plate; one end of the first sleeve is fitted onto the first upper support screw, and the other end is threaded to the first lower support screw, and the first lower support screw and the first base are fixedly connected. The second support rod assembly includes, from top to bottom, a second upper support screw, a second sleeve, a second lower support screw, a second base connected in sequence, and a second upper limit screw fitted onto the second upper support screw; the second upper support screw is fixed to the bottom of the second lower support steel plate; one end of the second sleeve is fitted onto the second upper support screw, and the other end is threaded to the second lower support screw, and the second lower support screw and the second base are fixedly connected.

[0009] In one embodiment, the first support rod assembly further includes a first hollow screw and a first O-ring fitted onto the first upper support screw; the second support rod assembly further includes a second hollow screw and a second O-ring fitted onto the second upper support screw, for anti-loosening and shock absorption.

[0010] In one embodiment, the fulcrum adjustment assembly consists of a lateral adjustment assembly and a vertical support assembly disposed at the bottom of the lateral adjustment assembly. The lateral length of the lateral adjustment assembly is adjustable, and the height of the vertical support assembly is adjustable.

[0011] In one embodiment, the lateral adjustment assembly includes a horizontally arranged lateral sleeve, symmetrically arranged eyelet screws at both ends of the lateral sleeve, and U-shaped sleeves respectively connected to the ends of the two eyelet screws. The two U-shaped sleeves are respectively fitted onto the first lower support screw and the second lower support screw, and the U-shaped sleeves are prevented from shifting by fixing the first lower limit screw and the second lower limit screw.

[0012] In one embodiment, the vertical support assembly includes, from top to bottom, a vertical sleeve, a fulcrum support screw, and a fulcrum base connected in sequence. A threaded tube and a locking pin that cooperate with the threaded tube are fixed at the bottom of the horizontal sleeve. The top of the vertical sleeve has a U-shaped opening. The vertical sleeve is sleeved on the threaded tube through the U-shaped opening and fixed by the locking pin to form a rotatable fulcrum.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: The rubber pad replacement device of the contact wire operation vehicle dynamically adapts to the size of the towing rod and crank arm of multiple vehicle models through the adjustable positioning frames on both sides. It forms a multi-level lifting structure through the first adjustable positioning frame assembly, the second adjustable positioning frame assembly and the fulcrum adjustment assembly, realizing millimeter-level precise lifting and lowering height adjustment. The tool reuse rate is increased from 0 to 80%, avoiding wood waste. The average annual maintenance cost per vehicle model is reduced by 40%, and it can still operate stably under complex working conditions (such as inclined ground). The lifting height error is ≤2mm, which is significantly better than the "double jack + wooden pad" in the prior art. The "double jack + wooden pad" generally has an error of ≥10mm. The rubber pad replacement device for the overhead contact line maintenance vehicle's traction unit allows for single-person operation, reducing the replacement time from 4 hours to 1.5 hours and increasing single-person operation efficiency by 60%. The device's positioning frame horizontal calibration function, combined with a modular process, controls rubber pad alignment errors, achieving an installation error of ≤±0.5mm (industry standard ±1mm), increasing the standardization rate to 80%. Furthermore, by adjusting the fulcrum position (lateral extension of 25-50cm in a 30-zone area), the device extends the power arm, reducing the force required for lifting. Lifting / lowering actions can be completed by a single person, reducing force by 50%. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of the rubber pad replacement device of the overhead contact line operation vehicle traction device according to one embodiment.

[0016] Figure 2 This is a schematic diagram of the rubber pad replacement device of the traction device of the overhead contact line operation vehicle according to one embodiment.

[0017] Figure 3 This is a cross-sectional view of the structure of a first adjustable positioning frame component according to one embodiment;

[0018] Figure 4 This is a cross-sectional view of the fulcrum adjustment component structure according to one embodiment.

[0019] Reference numerals: 10. First adjustable positioning frame assembly; 110. First adjustable frame; 112. First upper support steel plate; 114. First lower support steel plate; 116. First left adjusting screw; 118. First right adjusting screw; 120. First support rod assembly; 121. First upper support screw; 122. First upper limit screw; 123. First sleeve; 124. First lower limit screw; 125. First lower support screw; 126. First base; 127. First hollow screw; 128. First O-ring seal; 129. First wrench plane; 20. Second adjustable positioning frame assembly; 210. Second adjustable frame; 212. Second upper support steel plate; 214. Second lower support steel plate; 216. Second left... 218. Adjusting screw; 220. Second right adjusting screw; 221. Second support rod assembly; 222. Second upper support screw; 223. Second upper limit screw; 224. Second lower limit screw; 225. Second lower support screw; 226. Second base; 227. Second hollow screw; 228. Second O-ring seal; 229. Second wrench plane; 30. Pivot adjustment assembly; 310. Lateral adjustment assembly; 311. Lateral sleeve; 312. Lifting eye lug screw; 313. Pin; 314. U-shaped sleeve; 320. Vertical support assembly; 321. Vertical sleeve; 322. Pivot support screw; 323. Locking pin; 324. Pivot base; 325. Pivot limit screw. Detailed Implementation

[0020] To facilitate understanding of this utility model, the following description will be provided in more comprehensive and detailed manner with reference to the accompanying drawings and preferred embodiments. However, the scope of protection of this utility model is not limited to the following specific embodiments.

[0021] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of protection of this invention.

[0022] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0023] Please see Figure 1-4A contact wire maintenance vehicle traction device rubber pad replacement device according to one embodiment mainly includes: a first adjustable positioning frame assembly 10, a second adjustable positioning frame assembly 20, and a fulcrum adjustment assembly 30 connecting the first adjustable positioning frame assembly 10 and the second adjustable positioning frame assembly 20. The first adjustable positioning frame assembly 10 and the second adjustable positioning frame assembly 20 are symmetrically arranged on the left and right sides of the fulcrum adjustment assembly 30. The first adjustable positioning frame assembly 10 consists of a first adjustable frame 110 and a first support rod assembly 120 disposed at the bottom of the first adjustable frame 110, and the height of the first support rod assembly 120 is adjustable. The second adjustable positioning frame assembly 20 consists of a second adjustable frame 210 and a second support rod assembly 220 disposed at the bottom of the second adjustable frame 210, and the height of the second support rod assembly 220 is adjustable. The height of the fulcrum adjustment assembly 30 is adjustable.

[0024] Specifically, the first adjustable frame 110 includes a horizontally arranged and symmetrically positioned upper support steel plate 112 and lower support steel plate 114. Threaded holes are provided on both sides of the lower support steel plate 114. A first left adjusting screw 116 and a first right adjusting screw 118 are provided between the upper support steel plate 112 and the lower support steel plate 114. The first left adjusting screw 116 and the first right adjusting screw 118 are fixedly connected to the upper support steel plate 112, respectively. The first left adjusting screw 116 and the first right adjusting screw 118 are respectively inserted into the two threaded holes of the lower support steel plate 114. The height of the first adjustable frame 110 can be adjusted by adjusting the threaded connection position between the first left adjusting screw 116 and the first right adjusting screw 118 and the lower support steel plate 114. In use, the height of the first adjustable frame 110 can be made to fit the size of the traction rod (5-12cm) to lock and fix the traction rod. The bottom of the first left adjusting screw 116 and the first right adjusting screw 118 are provided with fixing nuts. Alternatively, threaded holes can be opened on both the first upper support steel plate 112 and the first lower support steel plate 114, so that the position of the upper and lower threaded connection can be adjusted arbitrarily to adjust the height of the first adjustable frame 110.

[0025] Specifically, the first support rod assembly 120 includes, from top to bottom, a first upper support screw 121, a first upper limit screw 122, a first sleeve 123, a first lower support screw 125, and a first base 126 connected in sequence. Specifically, one end of the first upper support screw 121 is screwed into the central threaded hole of the first lower support steel plate 114, and the other end is sleeved inside the first sleeve 123. The other end of the first sleeve 123 is threaded to the first lower support screw 125. The first base 126 is a steel plate used to support the first adjustable positioning frame assembly 10. By rotating the first upper limit screw 122 to fix the initial height, the position of the first adjustable frame 110 is coarsely adjusted, achieving first-level lifting adjustment. Preferably, a first wrench plane 129 is provided on the first sleeve 123. The first wrench plane 129 is used to hold the wrench and rotate the first sleeve 123 for adjustment. By adjusting the threaded connection length between the first lower support screw 125 and the first sleeve 123, the overall height of the first support rod assembly 120 can be precisely adjusted to achieve secondary lifting and lowering adjustment. The fine-tuning height range of the secondary lifting and lowering adjustment is within 80cm. The first wrench plane 129 facilitates the wrench to hold the first sleeve 123 for rotation without damaging the first sleeve 123.

[0026] Furthermore, the first support rod assembly 120 also includes a first hollow screw 127 and a first O-ring 128 for anti-loosening and shock absorption, the first hollow screw 127 and the first O-ring 128 being sleeved on the first upper support screw 121.

[0027] Specifically, the second adjustable frame 210 includes a horizontally arranged and symmetrically positioned upper support steel plate 212 and lower support steel plate 214. Threaded holes are provided on both sides of the lower support steel plate 214. A second left adjusting screw 216 and a second right adjusting screw 218 are provided between the upper support steel plate 212 and the lower support steel plate 214. The second left adjusting screw 216 and the second right adjusting screw 218 are respectively fixedly connected to the upper support steel plate 212. The second left adjusting screw 216 and the second right adjusting screw 218 are respectively inserted into the two threaded holes of the lower support steel plate 214. The width of the second adjustable frame 210 can be adjusted by adjusting the threaded connection position between the second left adjusting screw 216 and the second right adjusting screw 218 and the lower support steel plate 214. In use, the inner diameter of the positioning frame can be adapted to the size of the crank arm (8-17cm), thereby locking and fixing the crank arm. The bottom of the second left adjusting screw 216 and the second right adjusting screw 218 is provided with a fixing nut. Of course, threaded holes can also be opened on both the second upper support steel plate 212 and the second lower support steel plate 214, so that the position of the upper and lower threaded connection can be adjusted arbitrarily to adjust the height of the second adjustable frame 210.

[0028] Specifically, the second support rod assembly 220 includes, from top to bottom, a second upper support screw 221, a second upper limit screw 222, a second sleeve 223, a second lower support screw 225, and a second base 226 connected in sequence. The second base 226 is a steel plate used to support the second adjustable positioning frame assembly 20. One end of the second upper support screw 221 is screwed and fixed to the central threaded hole of the second lower support steel plate 214, and the other end is sleeved in the second sleeve 223. The other end of the second sleeve 223 is threaded to the second lower support screw 225. By rotating the second upper limit screw 222 to fix the initial height, the position of the second adjustable frame 210 is coarsely adjusted, achieving first-level lifting adjustment. A second wrench plane 229 is provided on the second sleeve 223. This plane is used to engage the wrench and rotate the second sleeve 223 to adjust its threaded connection length with the second lower support screw 225. This allows for precise adjustment of the overall height of the second support rod assembly 220, enabling secondary lifting and lowering adjustments within a range of 80cm. Furthermore, the second support rod assembly 220 includes a second hollow screw 227 for anti-loosening and shock absorption, and a second O-ring 228. The second hollow screw 227 and the second O-ring 228 are fitted onto the second upper support screw 221.

[0029] The heights of the first adjustable frame 110 and the second adjustable frame 210 can be dynamically adjusted, thus adapting to tow rods and crank arms of different work vehicle models, and used to adjust and fix tow rods and crank arms of different sizes. After fixing the tow rod and crank arm using the first adjustable frame 110 and the second adjustable frame 210, the height is adjusted according to the needs of the actual scenario using the first support rod assembly 120 and the second support rod assembly 220, and then the tow rod and crank arm are raised or lowered to complete the replacement of the rubber pad.

[0030] Specifically, the fulcrum adjustment assembly 30 consists of a lateral adjustment assembly 310 and a vertical support assembly 320. The lateral length of the lateral adjustment assembly 310 is adjustable, and the height of the vertical support assembly 320 is adjustable. Specifically, the lateral adjustment assembly 310 includes a horizontally arranged lateral sleeve 311, symmetrically arranged eyelet screws 312 at both ends of the lateral sleeve 311, U-shaped sleeves 314 connected to the ends of the two eyelet screws 312, and pins 313 for fixing the U-shaped sleeves 314 and the eyelet screws 312. The two U-shaped sleeves 314 are respectively fitted onto the first lower support screw 125 and the second lower support screw 225. The height of the first lower limit screw 124 and the second lower limit screw 224 is fixed to prevent the U-shaped sleeves 314 from shifting upwards. By rotating the two eyelet screws 312, the connection length with the lateral sleeve 311 can be adjusted by 25-50cm, thereby reducing the force required for jacking. The vertical support assembly 320 comprises, from top to bottom, a vertical sleeve 321, a fulcrum support screw 322, and a fulcrum base 324. A threaded tube and a locking pin 323 are fixed at the connection between the horizontal sleeve 311 and the vertical sleeve 321. The vertical sleeve 321 has a U-shaped opening, which is fitted onto the threaded tube and secured by the locking pin 323, forming a rotatable fulcrum. The vertical sleeve 321 can rotate left and right to adapt to uneven ground. One end of the fulcrum support screw 322 is threaded to the vertical sleeve 321, and the other end is fixed to the fulcrum base 324. By rotating the fulcrum support screw 322, an additional 0-8cm of height compensation can be achieved, which is then secured with a fulcrum limit screw 325, enabling three-stage lifting.

[0031] The working process of the rubber pad replacement device of the above-mentioned overhead contact line maintenance vehicle traction device is as follows: First, before replacing the rubber pad, the cotter pin, bolts, traction pin, and bushing need to be removed. Then, by rotating the first left adjusting screw 116, the first right adjusting screw 118, the second left adjusting screw 216, and the second right adjusting screw 218, the heights of the first adjustable frame 110 and the second adjustable frame 210 are adjusted respectively, and the traction rod and the crank arm are fixed in the first adjustable frame 110 and the second adjustable frame 210 respectively. Next, the first upper support screw 121 is tightened to the first lower support steel plate 114 through the central threaded hole, and the second upper support screw 221 is tightened to the second lower support steel plate 214 through the central threaded hole, ensuring that the plane of the steel plate is perpendicular to the screw. Then, the first upper support screw 121 is inserted into the first sleeve 123, and the second upper support screw 221 is inserted into the second sleeve 223. The initial height is fixed by rotating the first upper limit screw 122 and the second upper limit screw 222 to achieve the first stage of lifting. Next, rotate the first lower limit screw 124 to fix the U-shaped sleeve 314, and rotate the second lower limit screw 224 to fix the U-shaped sleeve 314. Immediately afterwards, rotate the first sleeve 123 to drive the first upper support screw 121 to pull down appropriately, and rotate the second sleeve 223 to drive the second upper support screw 221 to perform a two-stage lifting until the crank arm rises to the height required to remove the lower rubber pad, and remove the lower rubber pad, and at the same time remove the rubber pads on both sides of the traction rod. Next, rotate the first sleeve 123 to drive the first upper support screw 121 to lift, and rotate the second sleeve 223 in the opposite direction to slowly lower the crank arm. The lifting height is 10mm for one rotation, and the lifting height range is 40-80cm. Adjust the length of the power arm by rotating the transverse sleeve 311 of the pivot adjustment component 30, and pull down the crank arm to the position where the upper rubber pad can be removed. Next, after removing the rubber pad at the upper end of the crank arm and cleaning the residual adhesive in the rubber pad mounting grooves on both the crank arm and the traction rod side, insert the new rubber pad into the traction rod groove and the crank arm groove, ensuring horizontal alignment (error ≤ ±0.5mm). Then, raise the traction rod to the installation height using the second adjustable positioning frame assembly 20, rotate the second sleeve 223 in the opposite direction to pull down the crank arm, and use the fulcrum adjustment assembly 30's fulcrum reaction force to compact the rubber pad. Finally, install the bushing, traction pin, bolts, and cotter pin, and check the seal.

[0032] The above description is merely a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. For those skilled in the art, improvements and modifications obtained without departing from the technical concept of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A rubber pad replacement device for the traction device of a catenary work vehicle, characterized in that, include: A fulcrum adjustment assembly and a first adjustable positioning frame assembly and a second adjustable positioning frame assembly symmetrically connected on both sides of the fulcrum adjustment assembly; The first adjustable positioning frame assembly includes a first adjustable frame and a first support rod assembly disposed at the bottom of the first adjustable frame; the first adjustable frame includes a first upper support steel plate and a first lower support steel plate arranged parallel to each other, and the two sides of the first upper support steel plate and the first lower support steel plate are connected by a first left adjusting screw and a first right adjusting screw; and the height of the first support rod assembly of the first right adjusting screw is adjusted by adjusting the first left adjusting screw; The second adjustable positioning frame assembly includes a second adjustable frame and a second support rod assembly disposed at the bottom of the second adjustable frame; the second adjustable frame includes a second upper support steel plate and a second lower support steel plate arranged parallel to each other, the two sides of the second upper support steel plate and the first lower support steel plate are connected by a second left adjusting screw and a second right adjusting screw; and the height of the second support rod assembly is adjusted by adjusting the second left adjusting screw and the second right adjusting screw.

2. The rubber pad replacement device for the traction device of the overhead contact line operation vehicle according to claim 1, characterized in that, The first support rod assembly comprises, from top to bottom, a first upper support screw, a first sleeve, a first lower support screw, a first base connected in sequence, and a first upper limit screw fitted onto the first upper support screw; the first upper support screw is fixed to the bottom of the first lower support steel plate; one end of the first sleeve is fitted onto the first upper support screw, and the other end is threaded to the first lower support screw, and the first lower support screw and the first base are fixedly connected. The second support rod assembly comprises, from top to bottom, a second upper support screw, a second sleeve, a second lower support screw, a second base connected in sequence, and a second upper limit screw fitted onto the second upper support screw; the second upper support screw is fixed to the bottom of the second lower support steel plate; one end of the second sleeve is fitted onto the second upper support screw, and the other end is threaded to the second lower support screw, and the second lower support screw and the second base are fixedly connected.

3. The rubber pad replacement device for the overhead contact line operation vehicle traction device according to claim 2, characterized in that, The first support rod assembly also includes a first hollow screw and a first O-ring that are fitted onto the first upper support screw; the second support rod assembly also includes a second hollow screw and a second O-ring that are fitted onto the second upper support screw, for anti-loosening and shock absorption.

4. The rubber pad replacement device for the traction device of the overhead contact line operation vehicle according to claim 2, characterized in that, The fulcrum adjustment component consists of a lateral adjustment component and a vertical support component located at the bottom of the lateral adjustment component. The lateral length of the lateral adjustment component is adjustable, and the height of the vertical support component is adjustable.

5. The rubber pad replacement device for the traction device of the overhead contact line operation vehicle according to claim 4, characterized in that, The lateral adjustment assembly includes a horizontally arranged lateral sleeve, symmetrically arranged eyelet screws at both ends of the lateral sleeve, and U-shaped sleeves respectively connected to the ends of the two eyelet screws. The two U-shaped sleeves are respectively fitted onto the first lower support screw and the second lower support screw, and the U-shaped sleeves are prevented from shifting by fixing the first lower limit screw and the second lower limit screw.

6. The rubber pad replacement device for the traction device of the overhead contact line operation vehicle according to claim 4, characterized in that, The vertical support assembly comprises, from top to bottom, a vertical sleeve, a fulcrum support screw, and a fulcrum base connected in sequence. The bottom of the horizontal sleeve is fixed with a threaded tube and a locking pin that works with the threaded tube. The top of the vertical sleeve has a U-shaped opening. The vertical sleeve is fitted onto the threaded tube through the U-shaped opening and fixed with the locking pin to form a rotatable fulcrum.

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