A device for troubleshooting electrical equipment

Abstract

The present invention discloses an electrical equipment fault inspection and repair device, belonging to the technical field of electrical equipment inspection and repair. An electrical equipment fault inspection and repair device comprises an inspection platform, a protective cover is arranged on the inspection platform, a clamping assembly is arranged in the center of the upper side of the inspection platform, a mounting plate is fixedly connected to the center of the upper side of the protective cover, a mounting disk is fixedly connected to the lower side of the mounting plate, an inspection assembly is arranged inside the lower side of the mounting disk, and the inspection assembly is arranged above the clamping assembly; the clamping assembly comprises a rotating base, the lower side of the rotating base is in movable contact with the upper side of the inspection platform, a receiving cavity is opened inside the inspection platform, and a driving assembly is arranged inside the receiving cavity; the present invention solves the problems in the prior art that positioning is difficult and fault detection is not comprehensive when inspecting the motor, which makes the motor fault inspection and repair efficiency low and is prone to miss the inspection parts, resulting in the problem that hidden faults are not detected.

Description

Technical Field

[0001] The invention belongs to the technical field of electrical equipment maintenance, and in particular relates to an electrical equipment fault maintenance device. Background Art

[0002] Electrical equipment is a general term for generators, transformers, power lines, circuit breakers and other equipment in the power system. Motors are an important type of electrical equipment. After a period of operation, motor parts may wear, corrode and loosen, dust may accumulate on the coil surface and ventilation holes, and the coil insulation may age. Therefore, it is necessary to conduct preventive and restorative maintenance on motor equipment on a regular basis to ensure that the motor is in good condition during the maintenance process.

[0003] However, in the prior art, there are problems such as difficulty in positioning and incomplete fault detection when repairing motors, which makes the motor fault repair efficiency low and easily leads to missed repair parts, resulting in hidden faults not being detected. If the motor still has undetected problems after repair and is put into use again, it may cause operating failures and generate losses or even cause accidents. Therefore, the present invention provides a clamping assembly that can tightly position the motor, and uses an adjustable base in conjunction with a dynamic repair assembly, so that the motor can be comprehensively repaired under the premise of stable positioning, thereby achieving efficient repair and avoiding missed detection parts, so as to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the following problems in the prior art:

[0005] (1) In the prior art, there are problems such as difficulty in positioning and incomplete fault detection when repairing motors, which makes the motor fault repair efficiency low and easily leads to missed repair parts, resulting in hidden faults not being detected.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A device for repairing faults of electrical equipment comprises a repair platform, a protective cover is arranged on the repair platform, a clamping assembly is arranged in the center of the upper side of the repair platform, a mounting plate is fixedly connected to the center of the upper side of the protective cover, a mounting disk is fixedly connected to the lower side of the mounting plate, a repair assembly is arranged inside the lower side of the mounting disk, and the repair assembly is arranged above the clamping assembly; the clamping assembly comprises a rotating base, the lower side of the rotating base is in movable contact with the upper side of the repair platform, an accommodating cavity is opened inside the repair platform, a driving assembly is arranged inside the accommodating cavity, and the lower central side of the rotating base and the upper end of the driving assembly pass through the upper wall of the repair platform and are connected.

[0008] Preferably, the driving assembly includes a motor B, which is fixedly installed inside the maintenance platform, and the end of the output shaft of the motor B is fixedly connected to a driving wheel; the driving wheel is meshed with a stabilizing wheel through a transmission belt, and a connecting shaft is passed through the axis of the stabilizing wheel, and both ends of the connecting shaft are movably connected to the side walls of the maintenance platform.

[0009] Preferably, a driving frame is provided at the front end of the driving wheel axis, and the driving frame includes two groups of linkage rods A and linkage rods B, and the two groups of linkage rods A and linkage rods B are evenly spaced; a transmission column is provided below the clamping assembly, and a driving groove is provided on the side wall of the transmission column, and lead-in grooves are correspondingly provided at the upper and lower edges of the transmission column, and each group of lead-in grooves is respectively located at the end of the driving groove.

[0010] Preferably, the end of the linkage rod B is movably matched with the driving groove, and the end of the linkage rod A is fixedly connected with an arc rod, and the arc rod matches the introduction groove; the surface of the transmission column is also provided with an arc groove, and the arc groove is arranged between the upper and lower groups of introduction grooves; after the arc rod at the end of the linkage rod A slides into the upper introduction groove, it slides out along the arc groove and the lower introduction groove in turn, and the direction of the transmission column is not changed at this time; after the end of the linkage rod B slides into the upper introduction groove, it slides along the inclined driving groove to drive the transmission column to rotate, and the linkage rod B is retractable.

[0011] Preferably, a transmission shaft is fixedly connected in the center of the transmission column, the lower end of the transmission shaft movably passes through a fixed frame, the fixed frame is fixedly installed inside the maintenance platform, and the upper end of the transmission shaft movably passes through the maintenance platform and is connected to the bottom of the rotating base; the clamping assembly includes multiple groups of clamping blocks, and the multiple groups of clamping blocks form clamping grooves in the center, and the clamping grooves are used to position electrical equipment; the clamping blocks are respectively slidably connected to the linkage grooves on the limit frame, and the limit frame is fixedly connected to the upper side of the rotating base.

[0012] Preferably, an upper rack is provided below the clamping block, and a lower rack is meshingly connected below the upper rack, and both the upper rack and the lower rack are helical racks; a connecting slider is fixedly connected to the lower side of the lower rack, and the lower side of the connecting slider is slidably connected to the connecting groove on the limiting rail, and the limiting rail is fixedly connected to the upper side of the rotating base.

[0013] Preferably, the inner side of the lower rack is fixedly connected to the side rack, and the side rack is meshedly connected to the edge of the center gear. The lower end of the center gear axis passes through the center of the rotating base and is fixedly connected to the upper end of the output shaft of motor A. The motor A is fixedly installed inside the rotating base.

[0014] Preferably, the maintenance component includes a transmission frame, a maintenance probe is connected to the lower side of the transmission frame, a transverse groove and a longitudinal groove are opened in the transmission frame, a transverse slider is slidably connected in the transverse groove, and a longitudinal slider and a limit block are slidably connected in the longitudinal groove; the end of the transmission frame is slidably connected to the limit groove in the center of the upper end of the protective cover, and the limit block is fixedly connected to the center of the limit groove.

[0015] Preferably, the maintenance component also includes a transmission wheel, and a driving wheel is meshedly connected to one edge of the transmission wheel. The axis of the driving wheel movably passes through the mounting plate and is fixedly connected to the output shaft of the motor C. The motor C is fixedly mounted inside the mounting plate; the lower end of the axis of the transmission wheel is connected to the longitudinal slider, and the axis of the transmission wheel is movably connected to the center of the mounting plate.

[0016] Preferably, a positioning wheel is provided between the mounting plate and the transmission wheel disc, and the axis of the positioning wheel is movably connected to the outside of the shaft body of the transmission wheel disc and connected to the mounting plate through a sleeve shaft; the edge of the positioning wheel is meshingly connected with a linkage wheel, and one end of the axis of the linkage wheel passes through the transmission wheel disc and is connected to a transverse slider.

[0017] Compared with the prior art, the present invention provides an electrical equipment fault inspection and repair device, which has the following beneficial effects:

[0018] (1) The present invention cooperates with a clamping assembly and a driving assembly. The clamping assembly is used to clamp the electrical equipment first, and then the driving assembly drives the transmission column to rotate periodically. The transmission column then drives the transmission shaft and the motor equipment fixed on the rotating base to rotate. In combination with the maintenance assembly, efficient and comprehensive fault maintenance can be achieved.

[0019] (2) The present invention provides a clamping assembly. When clamping a motor to be repaired, the motor is first placed in the clamping groove. The central gear is then rotated to drive the surrounding side racks to move, thereby driving the lower rack to move horizontally. The lower rack drives the upper rack to drive the clamping block to move, thereby tightening the clamping groove to clamp the motor to be repaired.

[0020] (3) The present invention provides a maintenance component. When it needs to be activated, the transverse slider can be moved through a multi-gear transmission and the transmission frame can be pushed forward and backward through the transverse groove. The transmission frame drives the maintenance probe on its lower side to move back and forth, thereby expanding the maintenance range and avoiding the problem of missing maintenance parts and causing hidden faults to go undetected. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of an electrical equipment fault repair device proposed by the present invention;

[0022] Figure 2A schematic diagram of a partial structure of an electrical equipment fault repair device proposed by the present invention Figure 1 ;

[0023] Figure 3 A schematic diagram of a partial structure of an electrical equipment fault repair device proposed by the present invention Figure 2 ;

[0024] Figure 4 A schematic diagram of a partial structure of an electrical equipment fault repair device proposed by the present invention Figure 3 ;

[0025] Figure 5 A schematic diagram of a partial structure of an electrical equipment fault repair device proposed by the present invention Figure 4 ;

[0026] Figure 6 A schematic diagram of a partial structure of an electrical equipment fault repair device proposed by the present invention Figure 5 ;

[0027] Figure 7 A schematic diagram of a partial structure of an electrical equipment fault repair device proposed by the present invention Figure 6 ;

[0028] Figure 8 A schematic diagram of a partial structure of an electrical equipment fault repair device proposed by the present invention Figure 7 .

[0029] Description of the numbers in the figure:

[0030] 1. Inspection table; 2. Protective cover; 201. Limiting groove; 202. Limiting block; 3. Clamping assembly; 301. Clamping block; 302. Clamping groove; 303. Limiting frame; 304. Lower rack; 305. Side rack; 306. Connecting slider; 307. Center gear; 308. Limiting rail; 309. Connecting groove; 310. Motor A; 311. Linkage groove; 312. Rotating base; 4. Mounting plate; 401. Transmission frame; 40 2. Inspection probe; 403. Drive wheel; 404. Driving wheel; 405. Linkage wheel; 406. Longitudinal slider; 407. Positioning wheel; 408. Transverse slider; 5. Accommodating chamber; 6. Mounting plate; 7. Driving assembly; 701. Motor B; 702. Drive wheel; 703. Stabilizing wheel; 704. Connecting shaft; 705. Linkage rod A; 706. Linkage rod B; 707. Drive column; 708. Fixed bracket; 709. Drive shaft. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] Embodiment 1:

[0034] See also Figure 1-4 , an electrical equipment fault repair device comprises a repair platform 1, a protective cover 2 is arranged on the repair platform 1, a clamping assembly 3 is arranged in the center of the upper side of the repair platform 1, a mounting plate 6 is fixedly connected to the center of the upper side of the protective cover 2, a mounting plate 4 is fixedly connected to the lower side of the mounting plate 6, a repair assembly is arranged inside the lower side of the mounting plate 4, and the repair assembly is arranged above the clamping assembly 3; the clamping assembly 3 comprises a rotating base 312, the lower side of the rotating base 312 is in active contact with the upper side of the repair platform 1, an accommodating chamber 5 is opened inside the repair platform 1, a driving assembly 7 is arranged inside the accommodating chamber 5, and the lower side of the central part of the rotating base 312 and the upper end of the driving assembly 7 pass through the upper wall of the repair platform 1 and are connected;

[0035] The driving assembly 7 includes a motor B701, which is fixedly installed inside the maintenance platform 1. The end of the output shaft of the motor B701 is fixedly connected to a driving wheel 702; the driving wheel 702 is meshedly connected to a stabilizing wheel 703 through a transmission belt, and the axis of the stabilizing wheel 703 is penetrated by a connecting shaft 704, and both ends of the connecting shaft 704 are movable through the side wall of the maintenance platform 1;

[0036] A driving frame is arranged at the front end of the axis of the driving wheel 702, and the driving frame includes two groups of linkage rods A705 and linkage rods B706, and the two groups of linkage rods A705 and linkage rods B706 are evenly spaced; a transmission column 707 is arranged below the clamping assembly 3, and a driving groove is opened on the side wall of the transmission column 707, and introduction grooves are correspondingly opened at the upper and lower edges of the transmission column 707, and each group of introduction grooves is respectively located at the end of the driving groove;

[0037] The end of the linkage rod B706 is movably matched with the driving groove, and the end of the linkage rod A705 is fixedly connected with an arc rod, which matches the introduction groove; the surface of the transmission column 707 is also provided with an arc groove, which is arranged between the upper and lower groups of introduction grooves; after the arc rod at the end of the linkage rod A705 slides into the upper introduction groove, it slides out along the arc groove and the lower introduction groove in turn, and the direction of the transmission column 707 is not changed at this time; after the end of the linkage rod B706 slides into the upper introduction groove, it slides along the inclined driving groove to drive the transmission column 707 to rotate, and the linkage rod B706 is retractable;

[0038] A transmission shaft 709 is fixedly connected to the center of the transmission column 707. The lower end of the transmission shaft 709 movably passes through the fixed frame 708. The fixed frame 708 is fixedly installed inside the maintenance platform 1. The upper end of the transmission shaft 709 movably passes through the maintenance platform 1 and is connected to the bottom of the rotating base 312.

[0039] The present invention can realize the positioning and steering of electrical equipment through the cooperation of the clamping component 3 and the driving component 7, so as to facilitate the efficient maintenance of the electrical equipment; when it is necessary to repair the electrical equipment such as the motor, the motor is first clamped by the clamping component 3, and then the driving wheel 702 is driven to rotate by starting the motor B701, thereby driving the driving frame at the front end of the driving wheel 702 to rotate, and the arc rod at the end of the linkage rod A705 in the driving frame slides into the upper guide groove, and then slides out along the arc groove and the lower guide groove in turn. At this time, the direction of the transmission column 707 is not changed. After the end of the linkage rod B706 slides into the upper guide groove, it slides along the inclined driving groove to drive the transmission column 707 to rotate, and then the transmission column 707 drives the transmission shaft 709 and the motor equipment fixed on the rotating base 312 to rotate. In conjunction with the maintenance component, efficient and comprehensive fault maintenance can be achieved, avoiding the problems existing in the background technology.

[0040] Embodiment 2:

[0041] like Figure 4-5 As shown, the difference based on Example 1 is that:

[0042] The clamping assembly 3 includes a plurality of clamping blocks 301, and a clamping groove 302 is formed in the center of the plurality of clamping blocks 301. The clamping groove 302 is used to position the electrical equipment; the clamping blocks 301 are respectively slidably connected to the linkage groove 311 on the limiting frame 303, and the limiting frame 303 is fixedly connected to the upper side of the rotating base 312;

[0043] An upper rack is provided below the clamping block 301, and a lower rack 304 is meshed and connected below the upper rack. Both the upper rack and the lower rack 304 are helical racks. A connecting slider 306 is fixedly connected to the lower side of the lower rack 304, and the lower side of the connecting slider 306 is slidably connected to a connecting groove 309 on a limiting rail 308, and the limiting rail 308 is fixedly connected to the upper side of the rotating base 312.

[0044] The inner side of the lower rack 304 is fixedly connected to the side rack 305, and the side rack 305 is meshed and connected to the edge of the central gear 307. The lower end of the central gear 307 passes through the center of the rotating base 312 and is fixedly connected to the upper end of the output shaft of the motor A310. The motor A310 is fixedly installed inside the rotating base 312.

[0045] The present invention sets a clamping assembly 3. When clamping the motor that needs to undergo fault maintenance, the motor is first placed in the clamping groove 302, and then the motor A310 is started through an external switch. The motor A310 drives the central gear 307 to rotate, and the central gear 307 drives the surrounding side racks 305 to move and then drives the lower rack 304 to move horizontally, and drives the upper rack through the lower rack 304 to drive the clamping block 301 to move, so that the clamping groove 302 is tightened to clamp the motor equipment to be repaired; it should be noted that a rubber layer can be set in the clamping groove 302, so that the contact between the clamping block 301 and the motor equipment is softer and generates a larger friction force to avoid the motor from shifting during the positioning process, and the limit rail 308 is longer than the connecting slider 306 and can be used to cooperate with the clamping block 301 to tighten, clamp and loosen the motor.

[0046] Embodiment 3:

[0047] like Figure 6-8 As shown, what is different from Example 1-2 is:

[0048] The inspection component includes a transmission frame 401, a maintenance probe 402 is connected to the lower side of the transmission frame 401, a transverse groove and a longitudinal groove are provided in the transmission frame 401, a transverse slider 408 is slidably connected in the transverse groove, and a longitudinal slider 406 and a limit block 202 are slidably connected in the longitudinal groove; the end of the transmission frame 401 is slidably connected to the limit groove 201 at the center of the upper end of the protective cover 2, and the limit block 202 is fixedly connected to the center of the limit groove 201;

[0049] The maintenance component also includes a transmission wheel 403, and a driving wheel 404 is meshed and connected to one edge of the transmission wheel 403. The axis of the driving wheel 404 movably passes through the mounting plate 6 and is fixedly connected to the output shaft of the motor C. The motor C is fixedly installed inside the mounting plate 6; the lower end of the axis of the transmission wheel 403 is connected to the longitudinal slider 406, and the axis of the transmission wheel 403 is movably connected to the center of the mounting plate 6.

[0050] A positioning wheel 407 is provided between the mounting plate 6 and the transmission wheel disc 403. The axis of the positioning wheel 407 is movably connected to the outside of the axis of the transmission wheel disc 403 through a sleeve shaft and is connected to the mounting plate 6. The edge of the positioning wheel 407 is meshedly connected with a linkage wheel 405. One end of the axis of the linkage wheel 405 penetrates the transmission wheel disc 403 and is connected to a transverse slider 408.

[0051] The present invention sets up a maintenance component. When it needs to be enabled, the motor C behind the axis of the driving wheel 404 can be started through an external switch. The motor C drives the transmission wheel 403 to rotate. The transmission wheel 403 drives the linkage wheel 405 to rotate along the edge of the positioning wheel 407, thereby driving the horizontal slider 408 to move and push the transmission frame 401 to move forward and backward through the horizontal groove. The transmission frame 401 drives the maintenance probe 402 on its lower side to move back and forth, thereby expanding the maintenance range, avoiding the problem of missing the maintenance parts and causing hidden faults to not be detected.

[0052] It should be noted that the above-mentioned maintenance probe 402 can be removed and replaced with a nozzle for cleaning dust accumulation and blockage, and can also be replaced with a detection head for detecting the degree of coil aging and other tools that may be used for fault maintenance to assist the fault maintenance process.

[0053] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electrical equipment fault inspection and repair device, comprising an inspection platform (1), wherein a protective cover (2) is provided on the inspection platform (1), characterized in that: A clamping assembly (3) is arranged at the center of the upper side of the inspection platform (1); a mounting plate (6) is fixedly connected to the center of the upper side of the protective cover (2); a mounting plate (4) is fixedly connected to the lower side of the mounting plate (6); an inspection assembly is arranged inside the lower side of the mounting plate (4); the inspection assembly is arranged above the clamping assembly (3); the clamping assembly (3) comprises a rotating base (312); the lower side of the rotating base (312) is in movable contact with the upper side of the inspection platform (1); a receiving chamber (5) is provided inside the inspection platform (1); a driving assembly (7) is arranged inside the receiving chamber (5); the lower side of the rotating base (312) and the upper end of the driving assembly (7) penetrate the upper wall of the inspection platform (1) and are connected; The driving assembly (7) comprises a motor B (701), the motor B (701) being fixedly mounted inside the maintenance platform (1), the output shaft end of the motor B (701) being fixedly connected to a driving wheel disc (702); the driving wheel disc (702) being meshedly connected to a stabilizing wheel (703) via a transmission belt, the stabilizing wheel (703) being connected to a connecting shaft (704) through the axis thereof, and the two ends of the connecting shaft (704) being movably connected to the side wall of the maintenance platform (1); A driving frame is arranged at the front end of the axis of the driving wheel disc (702), and the driving frame comprises two groups of linkage rods A (705) and linkage rods B (706), and the two groups of linkage rods A (705) and linkage rods B (706) are evenly spaced. A transmission column (707) is arranged below the clamping assembly (3), and a driving groove is provided on the side wall of the transmission column (707). The upper and lower edges of the transmission column (707) are provided with introduction grooves, and each group of the introduction grooves is located at the end of the driving groove. The end of the linkage rod B (706) is movably matched with the driving groove, and the end of the linkage rod A (705) is fixedly connected with an arc rod, and the arc rod matches the introduction groove; the surface of the transmission column (707) is also provided with an arc groove, and the arc groove is arranged between the upper and lower groups of introduction grooves; after the arc rod at the end of the linkage rod A (705) slides into the upper introduction groove, it slides out along the arc groove and the lower introduction groove in sequence, and the direction of the transmission column (707) is not changed at this time; after the end of the linkage rod B (706) slides into the upper introduction groove, it slides along the inclined driving groove to drive the transmission column (707) to rotate, and the linkage rod B (706) is retractable; The transmission column (707) is fixedly connected to a transmission shaft (709) at the center thereof; the lower end of the transmission shaft (709) movably passes through a fixed frame (708); the fixed frame (708) is fixedly installed inside the inspection platform (1); the upper end of the transmission shaft (709) movably passes through the inspection platform (1) and is connected to the bottom of the rotating base (312); the clamping assembly (3) comprises a plurality of groups of clamping blocks (301); a clamping groove (302) is formed at the center of the plurality of groups of clamping blocks (301); the clamping groove (302) is used to position the electrical equipment; the clamping blocks (301) are respectively slidably connected to the linkage grooves (311) on the limiting frame (303); the limiting frame (303) is fixedly connected to the upper side of the rotating base (312); An upper rack is provided below the clamping block (301), and a lower rack (304) is meshedly connected below the upper rack, and both the upper rack and the lower rack (304) are helical racks; a connecting slider (306) is fixedly connected to the lower side of the lower rack (304), and the lower side of the connecting slider (306) is slidably connected to a connecting groove (309) on a limiting rail (308), and the limiting rail (308) is fixedly connected to the upper side of a rotating base (312); The inner side of the lower rack (304) is fixedly connected to the side rack (305), and the side rack (305) is meshedly connected to the edge of the central gear (307). The lower end of the axis of the central gear (307) passes through the center of the rotating base (312) and is fixedly connected to the upper end of the output shaft of the motor A (310). The motor A (310) is fixedly installed inside the rotating base (312).

2. An electrical equipment fault inspection and repair device according to claim 1, characterized in that: The inspection component comprises a transmission frame (401), the lower side of the transmission frame (401) is connected to an inspection probe (402), a transverse groove and a longitudinal groove are provided in the transmission frame (401), a transverse slider (408) is slidably connected in the transverse groove, and a longitudinal slider (406) and a limit block (202) are slidably connected in the longitudinal groove; the end of the transmission frame (401) is slidably connected to the limit groove (201) at the center of the upper end of the protective cover (2), and the limit block (202) is fixedly connected to the center of the limit groove (201).

3. An electrical equipment fault inspection and repair device according to claim 2, characterized in that: The maintenance component also includes a transmission wheel (403), one side edge of which is meshedly connected with a driving wheel (404), the axis of which movably passes through the mounting plate (6) and is fixedly connected to the output shaft of the motor C, and the motor C is fixedly mounted inside the mounting plate (6); the lower end of the axis of the transmission wheel (403) is connected to a longitudinal slider (406), and the axis of the transmission wheel (403) is movably connected to the center of the mounting plate (6).

4. An electrical equipment fault repair device according to claim 3, characterized in that: A positioning wheel (407) is provided between the mounting plate (6) and the transmission wheel disc (403); the axis of the positioning wheel (407) is movably connected to the outside of the axis of the transmission wheel disc (403) through a sleeve shaft and is connected to the mounting plate (6); the edge of the positioning wheel (407) is meshingly connected to a linkage wheel (405); one end of the axis of the linkage wheel (405) passes through the transmission wheel disc (403) and is connected to a transverse slider (408).

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