Material trolley for replacing and transporting multiple auxiliary parts

Abstract

The utility model discloses a material trolley for replacing and transporting multiple auxiliary parts. The material trolley comprises a trolley body, a roller device, a hand lever and the auxiliary parts, the roller device is arranged at the bottom of the trolley body and is used for moving the trolley body; the hand lever is arranged at the first end of the trolley body and is used for pulling the trolley body; the trolley body is provided with a trolley body loading area; the auxiliary part is detachably connected with the trolley body; the number of the auxiliary components is multiple, and the multiple auxiliary components are timely installed at the set positions of the train body loading area and used for assisting transportation of the train body components of the motor train unit. The material trolley can improve operation efficiency, reduce operation risks, optimize operation environment and solve the problem that an existing common operation trolley cannot safely convey a large number of train body parts of the motor train unit.

Description

Technical Field

[0001] The utility model belongs to the technical field of transportation equipment, and in particular relates to a material trolley for replacing and transporting multiple auxiliary components. Background Art

[0002] The skirt plate protective filter effectively blocks potential impacts of flying rocks and debris on internal components during intercity EMU operation. It also performs preliminary filtration of the air around installed components, ensuring optimal air quality. It also significantly improves the heat dissipation efficiency of various components during operation.

[0003] The brake pads of an EMU are the primary components providing braking force in the EMU's brake unit. When the braking system receives a command, the brake pads come into close contact with the brake disc. The relative motion between the two generates intense friction. This friction impedes the EMU's movement, slowing it down and ultimately stopping it. The friction generated during braking converts the EMU's kinetic energy into heat, which is dissipated into the air through the braking system and cooling system, causing wear on the brake pads.

[0004] During intercity EMU maintenance, the skirt panel protective filter and brake pads are inspected, cleaned, and replaced according to the relevant requirements of the intercity EMU operating instructions. However, due to the large number of parts that need to be handled and inspected, the existing operation method often relies on disassembly and assembly, stacking, and transportation on flatbed trucks (i.e., conventional work vehicles).

[0005] While this method currently allows for the transport of EMU body parts to a certain extent, it often requires secondary or even multiple transports when handling large quantities of different body parts, significantly impacting operational efficiency. For example, the filter screens used in different skirt panels vary in specifications, posing significant challenges to transportation and securing.

[0006] ① The smooth overall frame design of the filter makes it difficult to effectively secure during transportation, which can easily lead to the risk of it falling, potentially causing personal injury and damage to components. After cleaning, the filter often retains water droplets, which easily accumulate on the flatbed truck (i.e., ordinary work vehicle), further affecting work efficiency and the working environment.

[0007] ② Brake pads have a certain weight and size, and these may vary depending on the vehicle model. This increases the burden and difficulty of handling. Furthermore, brake pads are precision components, with their surface and internal structure specially treated to meet braking performance requirements. Therefore, extreme care is required during handling to avoid scratches, collisions, or squeezing to prevent damage. Furthermore, the shape and structure of designs vary, with some having complex geometries and internal structures. This increases the difficulty of handling, requiring the use of appropriate handling methods and tools to ensure safe handling.

[0008] In summary, ordinary operation trolleys have exposed obvious shortcomings in actual applications. Ordinary operation trolleys cannot meet the needs of fast, efficient and safe operations in the maintenance process of intercity EMUs.

[0009] Therefore, in response to this problem, there is an urgent need to provide a material trolley for replacing and transporting multiple auxiliary components to overcome the defects of the existing technology, improve operating efficiency, reduce operating risks, and optimize the operating environment.

[0010] Therefore, a new technology is needed to solve the problem of lacking a material trolley for replacing and transporting multiple auxiliary components in the prior art. Utility Model Content

[0011] In order to solve the above-mentioned problems in the prior art, the utility model provides a material trolley for replacing and transporting multiple auxiliary components. The material trolley has multiple auxiliary components that can be installed on the body loading area of ​​the material trolley in a timely manner to assist in the transportation of EMU body components. This can solve the problem that ordinary operating trolleys are currently unable to safely transport a large number of EMU body components.

[0012] The utility model adopts the following technical solutions:

[0013] A material trolley for replacing and transporting multiple auxiliary components, comprising a trolley body, a roller device, a hand lever and auxiliary components; the roller device is provided at the bottom of the trolley body, and the roller device is used to move the trolley body; the first end of the trolley body is provided with the hand lever, and the hand lever is used to tow the trolley body; the trolley body is provided with a body loading area; the connection between the auxiliary components and the trolley body is a detachable connection; there are a plurality of auxiliary components, and a plurality of the auxiliary components are timely installed at set positions in the body loading area to assist in the transportation of EMU body components.

[0014] Furthermore, the auxiliary components include a brake disc bracket and / or a filter screen guardrail;

[0015] The vehicle body loading area is provided with a plurality of fixing holes;

[0016] The brake pad bracket and / or filter screen guardrail are installed on the trolley body through the fixing holes in due time;

[0017] The vehicle body loading area is provided with a plurality of drainage holes.

[0018] Furthermore, the vehicle body is provided with a flat panel area; the flat panel area is used for placing articles.

[0019] Furthermore, the roller device includes a universal wheel group and a fixed wheel group; the universal wheel group is arranged at a front end setting position at the bottom of the trolley body; the fixed wheel group is arranged at a rear end setting position at the bottom of the trolley body.

[0020] Furthermore, it also includes a brake member, which is adjustably arranged on the universal wheel assembly and is used to limit the rolling of the universal wheel of the universal wheel assembly.

[0021] Furthermore, the first end of the trolley body has a mounting seat; the hand pull rod is hinged to the mounting seat.

[0022] Furthermore, a material trolley for replacing and transporting multiple auxiliary components further includes a hand-pull rod limit adjustment mechanism;

[0023] The hand lever limit adjustment mechanism includes a movable limit mechanism and an unlocking adjustment mechanism;

[0024] The movable limiting mechanism is provided at the bottom end of the hand lever, and the movable limiting mechanism can be locked with the mounting seat to limit the position so that the hand lever is in a vertical state;

[0025] The unlocking and adjusting mechanism is arranged on the hand pull rod and is used for unlocking the abutting connection between the movable limiting mechanism and the mounting seat.

[0026] Furthermore, the hand pull rod includes a handle portion, a connecting rod and an assembly plate; the handle portion is provided above the connecting rod; the assembly plate is provided below the connecting rod; and the assembly plate is hinged to the mounting seat through a connecting shaft.

[0027] Furthermore, the assembly plate is provided with a back plate; the movable limiting mechanism includes a locking piece and a push-lock spring; one end of the push-lock spring is connected to the back plate, and the other end is connected to the locking piece; a guide groove is provided on the assembly plate, and the locking piece can be movably arranged on the guide groove; the mounting seat has a limiting plate; the locking piece is connected to the limiting plate in a timely manner through the push-lock spring; the unlocking adjustment mechanism can adjust the locking piece to compress the push-lock spring to achieve limited unlocking.

[0028] Furthermore, the unlocking and adjusting mechanism includes an unlocking member, a pulling rope member, an unlocking handle and a return spring;

[0029] The unlocking member is rotatably arranged on the assembly plate;

[0030] The connecting rod has a hollow cavity; the side wall of the connecting rod is provided with an operation window;

[0031] One end of the unlocking handle is rotatably arranged in the connecting rod, and the other end is horizontally arranged outside through the operating window hole;

[0032] The return spring is in the hollow cavity and is located above the unlocking handle. One end of the return spring is connected to the inner wall of the connecting rod, and the other end is connected to the unlocking handle.

[0033] The pull cable member is located in the hollow cavity, one end of the pull cable member is connected to the set position of the unlocking handle, and the other end is connected to the unlocking member;

[0034] By adjusting the unlocking handle, the pulling rope can drive the unlocking member to rotate, and then drive the locking member to compress the push-lock spring to achieve limited unlocking.

[0035] Compared with the prior art, the beneficial effects of the present invention are:

[0036] The utility model discloses a material trolley for replacing and transporting multiple auxiliary components, comprising a trolley body, a roller device, a hand lever and auxiliary components. People can pull the trolley body to move by means of the hand lever, thereby transporting items. The trolley body is provided with a body loading area, and multiple auxiliary components can be installed on the material trolley body loading area in a timely manner to assist in the transportation of EMU body components. This can solve the problem that ordinary operating trolleys are currently unable to safely transport a large number of EMU body components, thereby improving operating efficiency, reducing operating risks, and optimizing the operating environment. Among them, common EMU body components include brake pads and skirt bottom plate protective filters. To assist in the transportation of brake pads, the utility model uses a brake pad bracket as an auxiliary component. To assist in the transportation of skirt bottom plate protective filters, the utility model uses a filter guardrail as an auxiliary component. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The technology of the utility model is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0038] Figure 1 It is a three-dimensional schematic diagram of the material trolley carrying brake pads and skirt bottom plate protective filter;

[0039] Figure 2 yes Figure 1 3D schematic diagram of the medium material trolley;

[0040] Figure 3 yes Figure 2 Front view of

[0041] Figure 4 yes Figure 3 It is the right view;

[0042] Figure 5 yes Figure 3 A top view of

[0043] Figure 6 yes Figure 4 A partial schematic diagram of the middle hand lever;

[0044] Figure 7 yes Figure 2 A local enlarged view at K;

[0045] Figure 8 It is a layout diagram of the connecting rod, assembly plate, connecting shaft, mounting seat, locking member, abutment plate, push lock spring, cable member and unlocking member;

[0046] Figure 9 It is a partial schematic diagram of the car body and mounting base;

[0047] Figure 10 yes Figure 8 A three-dimensional schematic diagram of the middle assembly panel;

[0048] Figure 11 yes Figure 8 A three-dimensional schematic diagram of the unlocking part;

[0049] Figure 12 yes Figure 8 A three-dimensional schematic diagram of the middle locking member;

[0050] Figure 13 yes Figure 12 A three-dimensional diagram from another perspective.

[0051] Reference numerals:

[0052] 1-trolley body; 11-trolley loading area; 111-fixing hole; P-unit; L-length direction of the vehicle loading area; 112-drainage hole; 12-trolley flat plate area; 13-mounting seat; 131-limiting plate; 14-stiffening plate; K-partial enlargement figure number;

[0053] 2-roller device; 21-universal wheel set; 22-fixed wheel set;

[0054] 3 - Hand lever; 31 - Handle; 32 - Connecting rod; 321 - Hollow cavity; 322 - Operation window; 33 - Assembly plate; 331 - Guide groove; 332 - Strip hole; 333 - Shaft hole; 334 - Flange; 335 - Connecting hole; 34 - Connecting shaft; 35 - Abutment plate;

[0055] 4- auxiliary components; 41- brake disc bracket; 411- rack position; 42- filter guardrail; A1- the highest filter guardrail; A2- the medium-height filter guardrail; A3- the lowest filter guardrail;

[0056] 5-brake parts;

[0057] 6 - Hand lever limit adjustment mechanism; 61 - Movable limit mechanism; 611 - Locking member; B - Limiting portion; B1 - Groove; B2 - Beveled portion; C - Connecting portion; 612 - Lock push spring; 62 - Unlock adjustment mechanism; 621 - Unlocking member; Q - Through hole; F - First rotation axis; G - Claw-shaped unlocking member; 622 - Pull cable member; 623 - Unlocking handle; D - Second rotation axis; 624 - Return spring; E - Fixing member;

[0058] 71-brake pad; 72-filter (or skirt plate protection filter); 73-tool box; M-section line; N-half section line. DETAILED DESCRIPTION

[0059] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0060] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. In addition, the terms "upper," "lower," "left," and "right" used in this utility model are only used with respect to the relative positions of the components of the utility model in the accompanying drawings.

[0061] Reference Figures 1 to 13A material trolley for replacing and transporting multiple auxiliary components comprises a trolley body 1, a roller device 2, a hand lever 3 and auxiliary components 4; the bottom of the trolley body 1 is provided with the roller device 2, and the roller device 2 is used to move the trolley body 1; the first end (such as the front end) of the trolley body 1 is provided with the hand lever 3, and the hand lever 3 is used to tow the trolley body 1, wherein the towing method can be manifested as people pulling or pushing the trolley body 1 through the hand lever 3; the trolley body 1 is provided with a body loading area 11; the connection between the auxiliary components 4 and the trolley body 1 is detachable; there are a plurality of auxiliary components 4, and a plurality of the auxiliary components 4 are timely installed at the set positions of the body loading area 11 to assist in the transportation of EMU body components. Among them, the EMU body components include brake pads 71 ​​and skirt bottom plate protective filter screen 72.

[0062] In one embodiment, the auxiliary component 4 includes a brake disc bracket 41 and / or a filter guardrail 42;

[0063] The vehicle loading area 11 is provided with a plurality of fixing holes 111 ; the fixing holes 111 are used to fix the brake pad bracket 41 , or to fix the filter screen guardrail 42 , or to fix the brake pad bracket 41 and the filter screen guardrail 42 ;

[0064] The brake pad bracket 41 and / or filter guardrail 42 are installed on the trolley body 1 through the fixing holes 111 in due time;

[0065] The vehicle loading area 11 is provided with a plurality of drainage holes 112. When the cleaned filter screen 72 is placed in the vehicle loading area 11 and leans against the filter screen guardrail 42 (refer to Figure 1 ), the drainage hole 112 is used to drain water dripping from the filter screen 72; specifically, when the cleaned filter screen 72 is placed in the vehicle loading area 11 and leaned against the filter screen guardrail 42, the cleaned filter screen 72, since there is water on its surface, the water will drip onto the vehicle loading area 11, and then the water can be drained away through the drainage hole 112. This design effectively reduces the accumulation of water in the vehicle loading area 11. At the same time, the drainage hole 112 is conducive to ventilation, which is conducive to faster drying of the filter screen 72.

[0066] The brake pad bracket 41 is an additional component of the trolley body 1, which is fixed to the body loading area 11 of the trolley body 1 through the fixing hole 111. The brake pad bracket 41 is used to fix the brake pad 71 to ensure that the brake pad 71 is stable and does not shake during transportation; Figures 1 to 3In this embodiment, the utility model designs a brake pad bracket 41 with a certain height dimension for this type of auxiliary component 4. One brake pad bracket 41 can be used to place multiple brake pads 71 ​​at the same time. In this embodiment, the height dimension of the brake pad bracket 41 is fixed. In another embodiment, the height dimension of the brake pad bracket 41 is adjustable.

[0067] The filter guardrail 42 is an additional component of the trolley body 1, which is fixed to the body loading area 11 of the trolley body 1 through the fixing hole 111; the filter guardrail 42 provides support for the filter 72 in the form of a guardrail to facilitate the collective transportation of a large number of filters 72; for the filter guardrail 42, refer to Figure 3 In this embodiment, the utility model designs three filter guardrails 42 with different heights for this type of auxiliary component 4, namely the highest filter guardrail A1, the medium height filter guardrail A2 and the smallest height filter guardrail A3, to meet the transportation needs of filters 72 of different sizes.

[0068] People can flexibly install brake shoe brackets 41 and / or filter screen guardrails 42 on the vehicle body loading area 11 of the vehicle body 1 according to actual needs.

[0069] There are three solutions for adding auxiliary components 4 to the trolley body 1:

[0070] The first one is that when the auxiliary component 4 only includes a brake pad bracket 41, several of the brake pad brackets 41 are installed on the body loading area 11 of the trolley body 1 through the fixing holes 111. At this time, only one type of auxiliary component 4, namely the brake pad bracket 41, is installed on the body loading area 11 of the trolley body 1.

[0071] The second type is that when the auxiliary component 4 only includes the filter guardrail 42, several of the filter guardrails 42 are installed on the body loading area 11 of the trolley body 1 through the fixing holes 111. At this time, only one type of auxiliary component 4, namely the filter guardrail 42, is installed on the body loading area 11 of the trolley body 1.

[0072] Ginseng Figures 1 to 3 , third, when the auxiliary components 4 include a brake pad bracket 41 and a filter guardrail 42, several of the brake pad brackets 41 are installed on the body loading area 11 of the trolley body 1 through the fixing holes 111, and several of the filter guardrails 42 are also installed on the body loading area 11 of the trolley body 1 through the fixing holes 111 at other positions. At this time, two types of auxiliary components 4, namely the brake pad bracket 41 and the filter guardrail 42, are added to the body loading area 11 of the trolley body 1.

[0073] Among them, the detachable connection relationship between the brake pad bracket 41 and the trolley body 1 is: the brake pad bracket 41 is inserted into the fixing hole 111 to achieve the fixation of the brake pad bracket 41; similarly, the detachable connection relationship between the filter screen guardrail 42 and the trolley body 1 is: the filter screen guardrail 42 is inserted into the fixing hole 111 to achieve the fixation of the filter screen guardrail 42; the plug-in connection mode of the auxiliary component 4 and the fixing hole 111 facilitates the installation and replacement of multiple or multiple types of auxiliary components 4 on the vehicle body loading area 11; when the auxiliary component 4 has only one type of auxiliary component, multiple "auxiliary components" are replaced, which is reflected in the installation and replacement of multiple auxiliary components 4 of the same type. For example, when the auxiliary component 4 has only one type of auxiliary component, the brake pad bracket 41, the auxiliary component 4 and the fixing hole 1 The plug-in and fixed method 11 can facilitate the installation and replacement of multiple brake pad brackets 41, thereby better assisting the transportation of the brake pad 71; for example, when the auxiliary component 4 has only one type of auxiliary component, the filter guardrail 42, the plug-in and fixed method of the auxiliary component 4 and the fixing hole 111 can facilitate the installation and replacement of multiple filter guardrails 42, thereby better assisting the transportation of the filter 72; and when the auxiliary component 4 has multiple types of auxiliary components, the replacement of multiple "auxiliary components" can be reflected in the replacement of multiple types of auxiliary components 4. For example, when the auxiliary component 4 has two types of brake pad brackets 41 and filter guardrails 42, the plug-in and fixed method of the auxiliary component 4 and the fixing hole 111 can facilitate the installation and replacement of multiple brake pad brackets 41 and multiple filter guardrails 42.

[0074] The present invention solves the problem of inconvenience in transporting a large number of EMU body parts during daily maintenance operations by flexibly adding and replacing required auxiliary parts 4 on the trolley body 1, thereby improving the transportation efficiency of EMU body parts and improving the transportation quality of EMU body parts; among them, EMU body parts such as brake pads 71 ​​and skirt bottom plate protective filter 72.

[0075] Reference Figure 2In one embodiment, the fixing holes 111 are arranged in a plurality of equally spaced rows along the length L of the vehicle loading area 11, with each row 111 comprising a plurality of fixing holes. In this embodiment, the vehicle loading area 111 is provided with eleven rows of fixing holes 111, each row comprising four fixing holes. The area between two adjacent rows of fixing holes 111 constitutes a unit P. In one embodiment, in a vehicle loading area 11 equipped with multiple filter guardrails, a unit P can accommodate up to ten skirt bottom protection filters 72 or thirty fresh air filters. In this embodiment, the area between the filter guardrails 42 occupies two units P, providing space for a large number of skirt bottom protection filters 72. After a large number of skirt bottom protection filters 72 are placed, the area between the two units P is essentially filled with the skirt bottom protection filters 72, leaving little space for the skirt bottom protection filters 72 to slide downward. This effectively ensures the stability of the skirt bottom protection filters 72. Preferably, the brake pad bracket 41 is installed on the vehicle body loading area 11 through the fixing hole 111. During installation, the brake pad bracket 41 occupies two units P. When installed adjacently, it must be separated by one unit P from the brake pad bracket 41 to avoid interference with the placement of the brake pad 71. Preferably, each of the brake pad brackets 41 is provided with a plurality of rack positions 411, and each of the rack positions 411 is used to place a brake pad 71. In this embodiment, a maximum of three brake pad brackets 41 can be installed on the vehicle body loading area 11, and each of the brake pad brackets 41 can place ten brake pads 71.

[0076] Reference Figure 1 and Figure 2 In one embodiment, the trolley body 1 has a body flat panel area 12, which is adjacent to the body loading area 11. The body flat panel area 12 is not provided with fixing holes 111 and drainage holes 112. The body flat panel area 12 is used to place items, such as a tool box 73 and sundries.

[0077] In one embodiment, the roller device 2 includes a universal wheel set 21 and a fixed wheel set 22; the universal wheel set 21 is arranged at the front end setting position of the bottom of the trolley body 1; the fixed wheel set 22 is arranged at the rear end setting position of the bottom of the trolley body 1.

[0078] Reference Figures 1 to 3 In one embodiment, it also includes a brake member 5, which is adjustably arranged on the universal wheel set 21 to limit the rolling of the universal wheel of the universal wheel set 21. This design can enable the material trolley of the utility model to be effectively stopped on the ground, and effectively prevent the material trolley from moving at will under the action of thrust.

[0079] Reference Figures 1 to 13In one embodiment, the first end (such as the front end) of the trolley body 1 has a mounting seat 13; the hand pull rod 3 is hinged to the mounting seat 13.

[0080] Reference Figures 1 to 13 , in one embodiment, a material trolley for replacing and transporting multiple auxiliary components further includes a hand-pull rod limit adjustment mechanism 6;

[0081] The hand lever limit adjustment mechanism 6 includes a movable limit mechanism 61 and an unlocking adjustment mechanism 62;

[0082] The movable limiting mechanism 61 is provided at the bottom end of the hand lever 3 and can engage with the mounting seat 13 to limit the position thereof, thereby limiting the hand lever 3 to a vertical position (after being limited, the hand lever 3 cannot rotate about the hinged connection with the mounting seat 13). The unlocking adjustment mechanism 62 is provided on the hand lever 3 and is used to unlock the engagement connection between the movable limiting mechanism 61 and the mounting seat 13. This design facilitates flexible towing of the trolley body 1 by the hand lever 3.

[0083] Reference Figures 1 to 13 In one embodiment, the hand pull rod 3 includes a handle portion 31, a connecting rod 32 and an assembly plate 33; the handle portion 31 is provided above the connecting rod 32; the assembly plate 33 is provided below the connecting rod 32; the assembly plate 33 is hinged to the mounting seat 13 through a connecting shaft 34. After people release the rotation limit of the hand pull rod 3 by the movable limiting mechanism 61, the hinged method allows the hand pull rod 3 to rotate around the connecting shaft 34, thereby adjusting to a height suitable for the operator to pull. This design can meet the traction needs of operators of different heights.

[0084] Reference Figure 2 and Figure 7 In one embodiment, the mounting seat 13 is reinforcedly connected to the trolley body 1 through a stiffening plate 14 .

[0085] Reference Figure 4 and Figure 6 In one embodiment, the handle portion 31 is an arc-shaped handle portion. Specifically, a "P" shape is formed, with the central axis of the connecting rod 32 as the center line of symmetry. The combined shape after symmetry is the shape of the handle portion 31 combined with the connecting rod 32.

[0086] In one embodiment, an anti-slip strip is provided on the handle portion 31 . This design can help the operator better grip the handle portion 31 .

[0087] In one embodiment, the connecting rod 32 is a connecting rod made of metal, and its cross section is a square section.

[0088] Reference Figures 1 to 13 In one embodiment, the assembly plate 33 is provided with a push plate 35; the movable limiting mechanism 61 includes a locking member 611 and a push-lock spring 612; one end of the push-lock spring 612 is connected to the push plate 35, and the other end is connected to the locking member 611; specifically, a groove B1 is provided on the locking member 611 to connect with the push-lock spring 612; a guide groove 331 is provided on the assembly plate 33, and the locking member 611 is movably provided on the guide groove 331; the mounting seat 13 has a limiting plate 131; the locking member 611 is timely connected to the limiting plate 131 through the push-lock spring 612; the unlocking adjustment mechanism 62 can adjust the locking member 611 to compress the push-lock spring 612 to achieve limited unlocking.

[0089] Reference Figures 1 to 13 In one embodiment, the assembly plate 33 has a strip hole 332, which is used for connecting the abutment plate 35. The assembly plate 33 has a shaft hole 333, which is used for connecting the connecting shaft 34.

[0090] Reference Figures 1 to 13 In one embodiment, the assembly plate 33 has a flange 334, which is used to abut against the limiting strip 131 of the mounting seat 13, which is conducive to cooperating with the locking member 611 to achieve locking and limiting, so that the hand pull rod 3 remains in a vertical state.

[0091] Reference Figures 1 to 13 In one embodiment, the locking member 611 includes a limiting portion B and a connecting portion C; the limiting portion B is provided with the groove B1 at one end and a beveled portion B2 at the other end, and the beveled portion B2 facilitates the locking member 611 to smoothly pass over the limiting plate 131 of the mounting seat 13 to achieve a card-stopping limit (after the hand lever 3 is rotated and unlocked, the vertical limiting state must be restored: the hand lever 3 is rotated back, and the beveled portion B2 exists. During the process of the locking member 611 contacting the limiting plate 131 and passing over the limiting plate 131, the push-lock spring 612 is compressed by the locking member 611; after the locking member 611 passes over the limiting plate 131, the push-lock spring 612 is reset, pushing the locking member 611 to the limiting plate 131 for card-stopping limit); the connecting portion C is movably connected to the guide groove 331 of the assembly plate 33.

[0092] Reference Figures 1 to 13 In one embodiment, the unlocking adjustment mechanism 62 includes an unlocking member 621, a cable member 622, an unlocking handle 623 and a return spring 624;

[0093] The unlocking member 621 is rotatably provided on the assembly plate 33 ; specifically, a connecting hole 335 is provided on the assembly plate 33 , and the unlocking member 621 is rotatably connected to the connecting hole 335 via a first rotation axis F;

[0094] The connecting rod 32 has a hollow cavity 321; the side wall of the connecting rod 32 is provided with an operation window 322;

[0095] One end of the unlocking handle 623 is rotatably disposed in the connecting rod 32 via the second rotation axis D, and the other end is horizontally disposed outside through the operation window 322;

[0096] The return spring 624 is located in the hollow cavity 321 and above the unlocking handle 623. One end of the return spring 624 is connected to the inner wall of the connecting rod 32 via a fixing member E, and the other end is connected to the unlocking handle 623. The return spring 624 is used to keep the unlocking handle 623 in a horizontal state.

[0097] The pull rope member 622 is in the hollow cavity 321 , one end of the pull rope member 622 is connected to the set position of the unlocking handle 623 , and the other end is connected to the unlocking member 621 ;

[0098] By adjusting the unlocking handle 623 , the pulling rope member 622 can drive the unlocking member 621 to rotate, and further drive the locking member 611 to compress the push-lock spring 612 to achieve limited unlocking.

[0099] Reference Figure 8 and Figure 11 In one embodiment, a through hole Q is provided on the unlocking member 621, and the through hole Q is used for the cable member 622 to pass through and connect.

[0100] Reference Figures 1 to 13 In one embodiment, the unlocking member 621 is a hook-shaped unlocking member G. Once installed on the assembly plate 33, the hook-shaped unlocking member G engages with the locking member 611. Adjusting the unlocking handle 623 (e.g., by moving the unlocking handle 623 upward) moves the cable member 622 upward, which in turn rotates the hook-shaped unlocking member G. Adjusting the rotation of the hook-shaped unlocking member G adjusts the movement of the locking member 611 within the guide slot 331 and compresses the push-lock spring 612, thereby unlocking the locking member 611's limit portion B from the limit plate 131 of the mounting seat 13, thereby allowing the hand lever 3 to freely rotate about the connecting shaft 34.

[0101] After the external force on the unlocking handle 623 is removed, the unlocking handle 623 will return to a horizontal state due to the presence of the reset spring 624. In addition, the pull rope member 622 will remove the (pulling) effect on the hook-shaped unlocking member G, and then the locking member 611 will lose the (pressing) effect of the hook-shaped unlocking member G. Under the action of the push-lock spring 612, the locking member 611 will be pushed by the push-lock spring 612 and restored to the initial state of the locking member 611.

[0102] In one embodiment, the method for using the material cart includes the following steps:

[0103] SA1. First, confirm the number and specifications of the filters 72 that need to be replaced, prepare the corresponding filter guardrails 42, and install the filter guardrails 42 on the vehicle loading area 11. When placing the skirt plate protective filter 72, select an appropriate unit P based on the specific size of the skirt plate protective filter 72 and place it on the vehicle loading area 11 of the material cart to avoid a mismatch between the height of the filter 72 and the height of the filter guardrail 42. This ensures that the filter guardrail 42 plays an optimal protective and fixing role. Placing filters 72 of the same specifications in the same area and filling them up facilitates transportation and quantitatively counts the number of filters 72 of the same specifications.

[0104] SA2. The user unlocks the vertical locking state of the hand lever 3 by adjusting the unlocking handle 623 on the hand lever 3 and adjusts the hand lever 3 to a suitable angle to ensure stability during the traction process. The user pulls the hand lever 3 to move the material cart carrying the new filter to the side of the EMU where the filter needs to be replaced.

[0105] SA3. Remove the old skirt protective filter 72 from the EMU and place it on the car body loading area 11 of the material cart. Remove the cleaned new filter from the car body loading area 11 and install it on the EMU. Since the new filter contains water after cleaning, the drainage holes 112 in the car body loading area 11 can drain water dripping from the filter 72 when it is placed on the car body loading area 11. The drainage holes 112 also help to dry the wet filter 72.

[0106] SA4. After completing the replacement of the EMU skirt plate protective filter 72, move the material trolley back to the cleaning room or designated storage location.

[0107] In another embodiment, a method for using a material cart includes the following steps:

[0108] SB1. First, confirm the number and specifications of the brake pads 71 ​​that need to be replaced, prepare the corresponding brake pad brackets 41, and install the brake pad brackets 41 on the vehicle loading area 11 through the fixing holes 111 to ensure that the brake pads 71 ​​do not shake during transportation;

[0109] SB2. The user adjusts the unlocking handle 623 on the hand lever 3 to unlock the vertical locking state of the hand lever 3 and adjusts the hand lever 3 to a suitable angle to ensure stability during the towing process. The user then pulls the hand lever 3 to move the material cart carrying the new brake pads to the side of the EMU where the brake pads need to be replaced.

[0110] SB3. Remove the old brake pads according to the operating specifications and carefully place them on the brake pad bracket 41 of the material trolley. Then, remove the new brake pads from the brake pad bracket 41 of the material trolley and install them on the EMU.

[0111] SB4. After completing the replacement of all brake pads on the EMU, move the material cart carrying the old brake pads to the processing area or designated storage location.

[0112] For other details of the material trolley for replacing and transporting multiple auxiliary components described in the present invention, please refer to the prior art and will not be described in detail here.

[0113] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A material trolley for replacing and transporting multiple auxiliary components, characterized in that: It includes a trolley body, a roller device, a hand lever and auxiliary components; the roller device is provided at the bottom of the trolley body, and the roller device is used to move the trolley body; the first end of the trolley body is provided with the hand lever, and the hand lever is used to tow the trolley body; the trolley body is provided with a body loading area; the connection between the auxiliary components and the trolley body is a detachable connection; there are several auxiliary components, and several of the auxiliary components are installed at the set positions of the body loading area in a timely manner to assist in the transportation of EMU body components.

2. The material trolley for replacing and transporting multiple auxiliary components according to claim 1, characterized in that: The auxiliary components include a brake disc bracket and / or a filter screen guardrail; The vehicle body loading area is provided with a plurality of fixing holes; The brake pad bracket and / or filter screen guardrail are installed on the trolley body through the fixing holes in due time; The vehicle body loading area is provided with a plurality of drainage holes.

3. The material trolley for replacing and transporting multiple auxiliary components according to claim 1, characterized in that: The trolley body is provided with a body flat plate area; the body flat plate area is used for placing articles.

4. The material trolley for replacing and transporting multiple auxiliary components according to claim 1, characterized in that: The roller device includes a universal wheel group and a fixed wheel group; the universal wheel group is arranged at a front end setting position of the bottom of the trolley body; the fixed wheel group is arranged at a rear end setting position of the bottom of the trolley body.

5. The material trolley for replacing and transporting multiple auxiliary components according to claim 4, characterized in that: It also includes a brake member, which is adjustably arranged on the universal wheel set and is used to limit the rolling of the universal wheel of the universal wheel set.

6. The material trolley for replacing and transporting multiple auxiliary components according to any one of claims 1 to 5, characterized in that: The first end of the trolley body is provided with a mounting seat; the hand pull rod is hinged to the mounting seat.

7. The material trolley for replacing and transporting multiple auxiliary components according to claim 6, characterized in that: It also includes a hand pull rod limit adjustment mechanism; The hand lever limit adjustment mechanism includes a movable limit mechanism and an unlocking adjustment mechanism; The movable limiting mechanism is provided at the bottom end of the hand lever, and the movable limiting mechanism can be locked with the mounting seat to limit the position so that the hand lever is in a vertical state; The unlocking and adjusting mechanism is arranged on the hand pull rod and is used for unlocking the abutting connection between the movable limiting mechanism and the mounting seat.

8. The material trolley for replacing and transporting multiple auxiliary components according to claim 7, characterized in that: The hand pull rod comprises a handle portion, a connecting rod and an assembly plate; the handle portion is provided above the connecting rod; the assembly plate is provided below the connecting rod; the assembly plate is hinged to the mounting seat via a connecting shaft.

9. The material trolley for replacing and transporting multiple auxiliary components according to claim 8, characterized in that: The assembly plate is provided with a back plate; the movable limiting mechanism includes a locking piece and a push-lock spring; one end of the push-lock spring is connected to the back plate, and the other end is connected to the locking piece; a guide groove is provided on the assembly plate, and the locking piece is movably arranged on the guide groove; the mounting seat has a limiting plate; the locking piece is connected to the limiting plate in a timely manner through the push-lock spring; the unlocking adjustment mechanism can adjust the locking piece to compress the push-lock spring to achieve limited unlocking.

10. The material trolley for replacing and transporting multiple auxiliary components according to claim 9, characterized in that: The unlocking and adjusting mechanism includes an unlocking member, a pulling rope member, an unlocking handle and a return spring; The unlocking member is rotatably arranged on the assembly plate; The connecting rod has a hollow cavity; An operation window is provided on the side wall of the connecting rod; One end of the unlocking handle is rotatably arranged in the connecting rod, and the other end is horizontally arranged outside through the operating window hole; The return spring is in the hollow cavity and is located above the unlocking handle. One end of the return spring is connected to the inner wall of the connecting rod, and the other end is connected to the unlocking handle. The pull cable member is located in the hollow cavity, one end of the pull cable member is connected to the set position of the unlocking handle, and the other end is connected to the unlocking member; By adjusting the unlocking handle, the pulling rope can drive the unlocking member to rotate, and then drive the locking member to compress the push-lock spring to achieve limited unlocking.

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