Grinding sub-assembly rapid to overhaul

Abstract

The grinding sub-assembly comprises a grinding sub-body, a grinding sub-body support and an anti-disengaging assembly, the grinding sub-body comprises a back plate, an insertion block and a friction block, the insertion block is fixedly arranged on the upper side face of the back plate, an insertion groove is formed in the lower side face of the grinding sub-body support, and the insertion block on the grinding sub-body is installed in the insertion groove of the grinding sub-body support in an inserted mode; a first inserting groove extending in the front-back direction is formed in the inserting block, the anti-disengaging assembly comprises an inserting head and an inserting arm fixed to one end of the inserting head, the inserting arm is inserted into the first inserting groove in the grinding piece, and a locking mechanism is arranged between the inserting head and the grinding piece support. According to the grinding sub-assembly and the anti-falling assembly, the inserting arm of the anti-falling assembly is inserted into the first inserting groove in the grinding sub-assembly, and the locking mechanism is arranged between the inserting head and the grinding sub-support, so that under the violent vibration working condition in the train running process, the whole anti-falling assembly is limited by the grinding sub-assembly and the grinding sub-support, violent shaking of the inserting head is effectively avoided, and the service life of the grinding sub-assembly is prolonged. And the hidden danger that the grinder is separated from the grinder support is eliminated.

Description

Technical Field

[0001] The invention relates to the technical field of train track tread cleaning equipment, and in particular to a grinding subassembly with quick maintenance. Background Art

[0002] At present, when the wheel tread of a rail transit vehicle is damaged, out of round, or has low viscosity, the wheel surface condition can be improved, slipping and idling can be prevented, and the wheel tread can be corrected by contacting the wheel with the grinding wheel of the tread cleaning device. The tread cleaning device of the prior art includes a grinding wheel and a grinding wheel holder. After the grinding wheel and the grinding wheel holder are connected, they are locked by an anti-slip device. However, the grinding wheel is in a relatively poor working condition during use. Severe vibration will cause the hook tongue on the anti-slip device to be out of the anti-slip position, causing the anti-slip device to fail, thereby causing the grinding wheel to fall off the grinding wheel holder, which is very likely to cause a safety accident.

[0003] In order to solve the problem of the grinding disc falling off due to the hook tongue being out of the anti-slip position, the Chinese utility model patent with application number 202120687588.8 discloses an anti-slip grinding sub-assembly and a tread cleaner, wherein the anti-slip grinding sub-assembly includes a grinding disc, a grinding disc holder and an anti-slip device, the grinding disc includes a back plate, the back plate is provided with a first connecting part, the first connecting part includes an insertion hole; the grinding disc holder includes a second connecting part, the second connecting part includes an insertion head, the second connecting part is suitable for being connected to the first connecting part to connect the grinding disc holder and the back plate, and the insertion head is suitable for being assembled into the insertion hole when the first connecting part and the second connecting part are assembled in place; the anti-slip device is arranged on the insertion head, the anti-slip device includes at least one hook tongue suitable for being constrained during the process of inserting the insertion head into the insertion hole so that the insertion head can be smoothly inserted into the insertion hole and being in the anti-slip position after the insertion head is assembled into the insertion hole to prevent the insertion head from being detached from the insertion hole, and an anti-slip member is provided between the hook tongue and the insertion head to prevent the hook tongue from being detached from the anti-slip position; the anti-slip member is a cotter pin. The problem with the tread cleaner of this structure during use is that after the first connection part on the grinder and the second connection part on the grinder support are assembled in place, the insertion head on the second connection part passes through the insertion hole on the first connection part and is exposed to the outside of the grinder, and is connected to prevent disengagement by the matching hook tongue and cotter pin arranged on the insertion head. Under severe vibration conditions during train operation, the insertion head on the second connection part will continuously shake at the insertion hole on the first connection part, causing the two legs of the cotter pin to continuously vibrate or even rotate, which will cause the cotter pin to bend under stress over time, and even embed into the insertion port or break and fall off, causing the grinder to have a risk of falling off. To this end, the present invention proposes a grinder assembly that is quick to maintain in order to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects existing in the prior art and provide a grinding sub-assembly with quick maintenance. After the grinding sub-assembly and the grinding sub-assembly are assembled in place, the plug-in arm of the anti-slipping assembly is plugged into a slot on the grinding sub-assembly, and a locking mechanism is provided between the plug-in connector of the anti-slipping assembly and the grinding sub-assembly holder. Therefore, under the severe vibration conditions during the operation of the train, the anti-slipping assembly as a whole is restrained by the grinding sub-assembly and the grinding sub-assembly, effectively avoiding severe shaking of the plug-in connector and eliminating the hidden danger of the grinding sub-assembly falling off the grinding sub-assembly holder. The overall structural design is ingenious and reasonable, and the preparation and application implementation is highly feasible and practical.

[0005] To achieve the above-mentioned purpose, the technical solution of the present invention is to design a grinding sub-assembly with quick maintenance, including a grinding sub-assembly, a grinding sub-assembly and an anti-slipping assembly, the grinding sub-assembly including a back plate, a plug-in block and a friction block, the friction block being fixed on the lower side of the back plate, the plug-in block being fixed on the upper side of the back plate, the lower side of the grinding sub-assembly having an opening facing the left or right side, the plug-in block on the grinding sub-assembly being plugged and installed in the plug-in slot on the lower side of the grinding sub-assembly, the plug-in block having a slot one extending in the front-rear direction, the anti-slipping assembly comprising a plug-in connector and a plug-in arm fixed at one end of the plug-in connector, the plug-in arm being plugged into the inside of slot one on the grinding sub-assembly, and a locking mechanism being provided between the plug-in connector and the grinding sub-assembly.

[0006] The present invention provides a grinding subassembly with quick maintenance. After the grinding subassembly and the grinding subassembly holder are assembled in place, the plug-in arm of the anti-slipping assembly is plugged into a slot on the grinding subassembly, and a locking mechanism is provided between the plug-in connector of the anti-slipping assembly and the grinding subassembly holder. Therefore, under the severe vibration condition during the operation of the train, the anti-slipping assembly as a whole is restrained by the grinding subassembly and the grinding subassembly holder, effectively preventing the plug-in connector from shaking violently and eliminating the hidden danger of the grinding subassembly falling off the grinding subassembly holder. The overall structural design is ingenious and reasonable, and the preparation and application implementation feasibility is high and the practicability is strong.

[0007] A preferred technical solution is that the grinding sub-holder has a protrusion extending to the outside of the front side or the outside of the rear side, the protrusion has a accommodating cavity one and an extension hole one connected to the accommodating cavity one, the inner end of the accommodating cavity one is connected to the plug-in groove, the plug connector is adapted to the accommodating cavity one, the plug connector is embedded in the accommodating cavity one, the plug connector has a accommodating cavity two and an extension hole two connected to the accommodating cavity two, an elastic element is embedded in the accommodating cavity two, a hook tongue is installed on the elastic element, one end of the hook tongue is accommodated in the accommodating cavity two, and the other end of the hook tongue passes through the corresponding extension hole two and extension hole one in sequence to extend to the outside of the protrusion, and the protrusion, accommodating cavity one, extension hole one, accommodating cavity two, extension hole two, elastic element and hook tongue constitute the locking mechanism. The locking mechanism is ingeniously and reasonably designed. After the grinder and the grinder support are assembled in place, the plug-in arm of the anti-slip assembly passes through the accommodating cavity one on the grinder support protrusion and is plugged into the slot one on the grinder, and the plug-in connector of the anti-slip assembly is embedded in the accommodating cavity one on the grinder support protrusion. Therefore, under the severe vibration conditions during the operation of the train, the anti-slip assembly as a whole is restrained by the grinder and the grinder support, effectively preventing the plug-in connector from shaking violently, so that the hook tongue set on the plug-in connector will not shake violently, ensuring the stability of the hook tongue when it is connected inside the corresponding set of extension holes two and one, eliminating the hidden danger of the grinder falling off the grinder support.

[0008] A further preferred technical solution is that the top wall of the accommodating chamber 1 has a plurality of through holes 1 intersecting the accommodating chamber 1, and the top wall of the accommodating chamber 2 has a through hole 2. When inspecting and replacing the grinder, a screwdriver, a wrench or other tool is inserted from the through hole 1 into the accommodating chamber 1, and then the anti-slip assembly is tilted out from the accommodating chamber 1, thereby ensuring the convenience of operation when disassembling the anti-slip assembly; when assembling the anti-slip assembly, a screwdriver, a wrench or other tool can be inserted from the through hole 2 into the accommodating chamber 2, thereby facilitating the adjustment of the position of the spring and the hook tongue, thereby ensuring the assembly efficiency of the anti-slip assembly.

[0009] A further preferred technical solution is that the inner side surface of the bottom wall of the accommodating chamber 1 is provided with a slot 3 which is interlinked with the accommodating chamber 1, the lower side surface of the grinding sub holder is provided with a slot 2 which is interlinked with the plug-in slot, a positioning slot is also provided on the side edge of the plug-in slot away from the protrusion, and the slot 3, the slot 2 and the positioning slot correspond to each other, one end of the plug-in arm on the anti-slip assembly is fixedly arranged on the lower side of one end of the plug connector, and the free end of the plug-in arm passes through the slot 3 and the slot 2 in sequence and is clamped inside the positioning slot. The plug-in arm and the plug connector on the anti-slip assembly are staggered on different planes, and one end of the plug-in arm is fixedly arranged on the lower side of one end of the plug connector, and has good adaptability with both the grinding sub and the grinding sub holder, and does not require much improvement to the grinding sub holder and the grinding sub of the original structure, which reduces the processing difficulty of the grinding sub assembly of the present invention, thereby ensuring that the grinding sub assembly of the present invention can be smoothly prepared and implemented.

[0010] A further preferred technical solution is that the end of the hook tongue located inside the second accommodating chamber has a retaining eaves to limit it inside the second accommodating chamber, and the end of the hook tongue located inside the second accommodating chamber also has a clamping groove, and the end of the spring is inserted into the corresponding clamping groove on the hook tongue. One end of the hook tongue is limited inside the second accommodating chamber by the retaining eaves, and the end of the spring is inserted into the corresponding clamping groove on the hook tongue. The structural design is ingenious and reasonable, and the preparation and implementation of the anti-slip assembly is highly feasible.

[0011] A further preferred technical solution is that the end of the hook tongue extending out of the extension hole 2 is provided with a pin hole 2 penetrating the upper and lower end surfaces, the top wall of the accommodating cavity 1 is provided with pin holes 1 located on both sides, and also includes an n-shaped elastic pin, when the grinder and the grinder holder are assembled and locked by the anti-slip assembly, the two ends of the n-shaped elastic pin are respectively connected to a group of corresponding pin holes 1 and 2. The hook tongues located on both sides of the plug connector are limited by the n-shaped elastic pins to prevent the hook tongue from vibrating violently inside the corresponding group of extension holes 1 and 2, and further improve the installation stability of the anti-slip assembly inside the grinder holder and the grinder.

[0012] A further preferred technical solution is that the protrusion is located at the left or right end of the plug-in slot on the grinder support, or the protrusion is located in the middle of the plug-in slot on the grinder support; the upper side of the plug-in block and the lower side of the grinder support are both provided with weight-reducing grooves. The protrusion can be located at the end or the middle of the plug-in slot according to the actual use conditions to avoid interference with the grinder support assembled on the tread cleaner; the grinder and the grinder support are both provided with weight-reducing holes to ensure the lightness of the grinder and the grinder support after assembly.

[0013] A further preferred technical solution is that a pair of ear plates are provided on the upper side of the grinding sub holder, the ear plates are provided with mounting holes, and the projection of the ear plates on the upper side of the grinding sub holder is consistent with the relative sliding and plugging direction between the plug block and the plug slot. When the tread cleaner assembled by the grinding sub and the grinding sub holder is installed on the train bogie for use, the protrusion can be directed to the outside of the wheel to ensure the convenience of operation when the grinding sub is inspected and replaced.

[0014] A further preferred technical solution is that an abutment block is fixedly provided on one side of an ear plate close to the protrusion and facing the protrusion, and is located at the lower side edge of the mounting hole. When the grinding sub-holder is fixedly mounted on the tread cleaner by a bolt assembly penetrating the inside of the mounting hole on the ear plate, a side edge of the hexagonal end plate at one end of the screw on the bolt assembly can abut against the abutment block, thereby preventing the screw from rotating, and ensuring the convenience of installation when the grinding sub-assembly is assembled for tread cleaning.

[0015] A further preferred technical solution is that the plug-in slot is a dovetail slot, and the plug-in block is a wedge-shaped protrusion matched with the plug-in slot. The plug-in block and the plug-in slot are designed as a matching dovetail structure, thereby ensuring the stability of the grinding wheel when it is installed on the grinding wheel holder.

[0016] The advantages and beneficial effects of the present invention are:

[0017] 1. A grinding subassembly with quick maintenance of the present invention, after the grinding subassembly and the grinding sub holder are assembled in place, the plug-in arm of the anti-slipping assembly is plugged into a slot on the grinding subassembly, and a locking mechanism is provided between the plug-in connector of the anti-slipping assembly and the grinding sub holder, so that under the severe vibration condition during the operation of the train, the anti-slipping assembly as a whole is restrained by the grinding subassembly and the grinding sub holder, effectively avoiding severe shaking of the plug-in connector, and eliminating the hidden danger of the grinding sub detaching from the grinding sub holder; the overall structural design is ingenious and reasonable, the preparation and application implementation is highly feasible, and the practicability is strong.

[0018] 2. The locking mechanism is ingeniously and reasonably designed. After the grinder and the grinder support are assembled in place, the plug-in arm of the anti-slip assembly passes through the accommodating cavity one on the grinder support protrusion and is plugged into the slot one on the grinder, and the plug-in connector of the anti-slip assembly is embedded in the accommodating cavity one on the grinder support protrusion. Therefore, under the severe vibration conditions during the operation of the train, the anti-slip assembly as a whole is restrained by the grinder and the grinder support, effectively preventing the plug-in connector from shaking violently, so that the hook tongue set on the plug-in connector will not shake violently, ensuring the stability of the hook tongue when it is connected in the corresponding set of extension holes two and one, eliminating the hidden danger of the grinder falling off the grinder support.

[0019] 3. The top wall of the accommodating chamber 1 is provided with a plurality of through holes 1 intersecting the accommodating chamber 1, and the top wall of the accommodating chamber 2 is provided with through holes 2. When inspecting and replacing the grinding wheel, a screwdriver, a wrench or other tool is inserted from through hole 1 into the accommodating chamber 1, and then the anti-detachment component is tilted out from the accommodating chamber 1, thereby ensuring the convenience of operation when disassembling the anti-detachment component; when assembling the anti-detachment component, a screwdriver, a wrench or other tool can be inserted from through hole 2 into the accommodating chamber 2, thereby facilitating the adjustment of the position of the spring and the hook tongue, thereby ensuring the assembly efficiency of the anti-detachment component.

[0020] 4. The plug-in arm and the plug-in connector on the anti-drop assembly are staggered and arranged on different planes, and one end of the plug-in arm is fixed to the lower side of one end of the plug-in connector, which has good adaptability with the grinder and the grinder holder, and does not require much improvement to the grinder holder and grinder of the original structure, thereby reducing the processing difficulty of the grinder assembly of the present invention, thereby ensuring that the grinder assembly of the present invention can be smoothly prepared and implemented.

[0021] 5. The end of the hook tongue extending out of the extension hole 2 is provided with a pin hole 2 penetrating the upper and lower end surfaces, the top wall of the accommodating cavity 1 is provided with pin holes 1 located on both sides, and also includes an n-shaped elastic pin. When the grinder and the grinder holder are assembled and locked through the anti-slip assembly, the two ends of the n-shaped elastic pin are respectively connected to a group of corresponding pin holes 1 and 2. The hook tongues located on both sides of the plug connector are limited by the n-shaped elastic pins to prevent the hook tongue from vibrating violently inside the corresponding group of extension holes 1 and 2, further improving the installation stability of the anti-slip assembly inside the grinder holder and the grinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a left front side perspective view of a grinding subassembly with quick maintenance in Example 1 (without the N-shaped elastic pin);

[0023] Figure 2 It is a longitudinal cross-sectional view of a grinding subassembly with quick maintenance along the center position of the anti-slip assembly in Example 1 (the N-shaped elastic pin is hidden);

[0024] Figure 3 This is a disassembled diagram of a grinding subassembly with quick maintenance in Example 1 (the N-shaped elastic pin is hidden);

[0025] Figure 4 It is a three-dimensional image of the grinding sub-holder from an upward angle;

[0026] Figure 5 It is a stereoscopic image of the grinding sub-holder from the right front side perspective;

[0027] Figure 6 It is a stereoscopic image of the grinding wheel from the left front side perspective;

[0028] Figure 7It is a three-dimensional structural diagram of the anti-slip component;

[0029] Figure 8 It is a top-down perspective stereogram of the anti-slip assembly (partial cutaway view);

[0030] Fig. 9 It is the assembly relationship diagram of the hook tongue and the spring;

[0031] Fig.10 It is a left front side perspective view of a grinding subassembly with quick maintenance in Example 2;

[0032] In the figure: 1. grinder; 2. grinder support; 3. anti-slip assembly; 4. hook tongue; 5. spring; 6. N-shaped elastic pin; 1-1. back plate; 1-2. plug-in block; 1-2a. slot one; 1-3. friction block; 2-1. plug-in slot; 2-1a. slot two; 2-1b. positioning slot; 2-2. protrusion; 2-2a. accommodating cavity one; 2-2b. slot three; 2-2c. extension hole one; 2-2d. through hole one; 2-2e. pin hole one; 2-3. ear plate; 2-3a. mounting hole; 2-4. abutment block; 3-1. plug connector; 3-1a. accommodating cavity two; 3-1b. extension hole two; 3-1c. through hole two; 3-2. plug-in arm; 4-1. eaves; 4-2. snap-in slot; 4-3. pin hole two; A. weight reduction slot. DETAILED DESCRIPTION

[0033] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0034] Example 1

[0035] like Figures 1 to 9 As shown, a grinding sub-assembly with quick maintenance includes a grinding sub-assembly, a grinding sub-assembly 2 and an anti-slip assembly 3, the grinding sub-assembly 1 includes a back plate 1-1, a plug-in block 1-2 and a friction block 1-3, the friction block 1-3 is fixed on the lower side of the back plate 1-1, the plug-in block 1-2 is fixed on the upper side of the back plate 1-1, the lower side of the grinding sub-assembly 2 has a plug-in slot 2-1 opening toward the left or right side, the plug-in block 1-2 located on the grinding sub-assembly 1 is plugged and installed in the plug-in slot 2-1 located on the lower side of the grinding sub-assembly 2, the plug-in block 1-2 has a slot 1-2a extending along the front-to-back direction, the anti-slip assembly 3 includes a plug connector 3-1 and a plug arm 3-2 fixed to one end of the plug connector 3-1, the plug arm 3-2 is plugged into the slot 1-2a on the grinding sub-assembly 1, and a locking mechanism is provided between the plug connector 3-1 and the grinding sub-assembly 2.

[0036] Preferably, the grinding sub-holder 2 has a protrusion 2-2 extending to the outside of the front side or the outside of the rear side, the protrusion 2-2 has a receiving cavity 2-2a and a protruding hole 2-2c connected to the receiving cavity 2-2a, the inner end of the receiving cavity 2-2a is connected to the plug-in slot 2-1, the plug connector 3-1 is adapted to the receiving cavity 2-2a, the plug connector 3-1 is embedded in the receiving cavity 2-2a, the plug connector 3-1 has a receiving cavity 2-1a and a protruding hole 2-2c connected to the receiving cavity The protruding hole 2-1b is connected to the protruding block 2-3-1a, and an elastic element 5 is embedded in the accommodating cavity 2-1a, and a hook tongue 4 is installed on the elastic element 5. One end of the hook tongue 4 is accommodated in the accommodating cavity 2-1a, and the other end of the hook tongue 4 passes through the corresponding protruding hole 2-1b and protruding hole 1 2-2c in sequence and extends to the outside of the protrusion 2-2. The protrusion 2-2, accommodating cavity 1 2-2a, protruding hole 1 2-2c, accommodating cavity 2 3-1a, protruding hole 2-1b, elastic element 5 and hook tongue 4 constitute the locking mechanism.

[0037] Further preferably, the top wall of the accommodating chamber 1 2-2a has a plurality of through holes 1 2-2d that are connected to the accommodating chamber 1 2-2a, and the top wall of the accommodating chamber 2 3-1a has a through hole 2 3-1c.

[0038] Further preferably, the inner side surface of the bottom wall of the accommodating cavity 1 2-2a has a slot three 2-2b that is connected to the accommodating cavity 1 2-2a, the lower side surface of the grinding sub-holder 2 has a slot two 2-1a that is connected to the plug-in slot 2-1, and a positioning slot 2-1b is also provided on the side edge of the plug-in slot 2-1 away from the protrusion 2-2, and the slot three 2-2b, the slot two 2-1a and the positioning slot 2-1b correspond to each other, one end of the plug-in arm 3-2 on the anti-detachment component 3 is fixed to the lower side of one end of the plug connector 3-1, and the free end of the plug-in arm 3-2 passes through the slot three 2-2b and the slot two 2-1a in sequence and is clamped in the positioning slot 2-1b.

[0039] Further preferably, the end of the hook tongue 4 located inside the accommodating chamber 3-1a has a guardrail 4-1 that limits it inside the accommodating chamber 3-1a, and the end of the hook tongue 4 located inside the accommodating chamber 3-1a also has a snap-in groove 4-2, and the end of the spring 5 is inserted into the corresponding snap-in groove 4-2 on the hook tongue 4.

[0040] Further preferably, one end of the hook tongue 4 extending out of the hole 2-1b is provided with a pin hole 2-3 passing through the upper and lower end surfaces, and the top wall of the accommodating cavity 1-2a is provided with pin holes 1-2e located on both sides, and also includes an N-shaped elastic pin 6. When the grinder 1 and the grinder holder 2 are assembled and locked through the anti-slip assembly 3, the two ends of the N-shaped elastic pin 6 are respectively connected to a group of corresponding pin holes 1-2e and the inside of the pin hole 2-3.

[0041] Further preferably, the protrusion 2-2 is located at the left end or right end of the plug-in slot 2-1 on the grinding sub-holder 2; the upper side surface of the plug-in block 1-2 and the lower side surface of the grinding sub-holder 2 are both provided with a weight-reducing groove A.

[0042] Further preferably, a pair of ear plates 2-3 are provided on the upper side of the grinding sub-holder 2, and mounting holes 2-3a are provided on the ear plates 2-3, and the projection of the ear plates 2-3 on the upper side of the grinding sub-holder 2 is consistent with the relative sliding plug-in direction between the plug-in block 1-2 and the plug-in slot 2-1.

[0043] Further preferably, an abutment block 2-4 located at the lower side edge of the mounting hole 2-3a thereof is fixedly provided on a side surface of an ear plate 2-3 close to the protrusion 2-2 facing the protrusion 2-2.

[0044] Further preferably, the plug-in slot 2-1 is a dovetail slot, and the plug-in block 1-2 is a wedge-shaped protrusion matched with the plug-in slot 2-1.

[0045] Example 2

[0046] like Fig.10 As shown, a grinding sub-assembly with quick maintenance is different from the grinding sub-assembly in Example 1 in that: the protrusion 2-2 is located in the middle of the insertion groove 2-1 on the grinding sub-holder 2.

[0047] The maintenance principle of the grinding subassembly with quick maintenance of the present invention is as follows:

[0048] When replacing and inspecting the grinding wheel 1 on the train tread cleaner, first use one hand to apply pressure to the outer ends of the two hook tongues 4 toward the inside of the accommodating chamber 3-1a, so as to facilitate the removal of the N-shaped elastic pin 6; continue to squeeze the outer ends of the two hook tongues 4 into the inside of the accommodating chamber 3-1a, and use the other hand to hold a screwdriver and extend it from the through hole 2-2d to the plug connector 3-1 of the anti-slip component 3, and push the plug connector 3-1 toward the free end of the protrusion 2-2 until a part of the plug connector 3-1 is exposed from the inside of the accommodating chamber 2-2a; hold the plug connector 3-1 with your hand to expose Drag the part of the accommodating cavity 2-2a outward to remove the anti-slip assembly 3; then remove the grinder 1 from the grinder holder 2; reinsert the plug-in block 1-2 on the new grinder 1 into the plug-in slot 2-1 on the grinder holder 2, and pass the plug-in arm 3-2 on the anti-slip assembly 3 through the accommodating cavity 2-2a again and insert it into the slot 1-2a on the grinder 1, until the outer ends of the hook tongues 4 on both sides extend out of the corresponding set of extension holes 2 3-1b and extension holes 1 2-2c to the outside of the protrusion 2-2, and the new grinder 1 is installed in place.

[0049] The present invention provides a grinding subassembly with quick maintenance. After the grinding subassembly and the grinding subassembly holder are assembled in place, the plug-in arm of the anti-slipping assembly is plugged into a slot on the grinding subassembly, and a locking mechanism is provided between the plug-in connector of the anti-slipping assembly and the grinding subassembly holder. Therefore, under the severe vibration condition during the operation of the train, the anti-slipping assembly as a whole is restrained by the grinding subassembly and the grinding subassembly holder, effectively preventing the plug-in connector from shaking violently and eliminating the hidden danger of the grinding subassembly falling off the grinding subassembly holder. The overall structural design is ingenious and reasonable, and the preparation and application implementation feasibility is high and the practicability is strong.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A grinding subassembly with quick maintenance, comprising a grinding subassembly (1), a grinding subassembly holder (2) and an anti-slip assembly (3), wherein the grinding subassembly (1) comprises a back plate (1-1), a plug-in block (1-2) and a friction block (1-3), wherein the friction block (1-3) is fixedly arranged on the lower side of the back plate (1-1), the plug-in block (1-2) is fixedly arranged on the upper side of the back plate (1-1), the lower side of the grinding subassembly holder (2) has a plug-in slot (2-1) opening toward the left or right side, the plug-in block (1-2) on the grinding subassembly (1) is plug-in-installed in the plug-in slot (2-1) on the grinding subassembly holder (2), characterized in that: The plug-in block (1-2) has a slot one (1-2a) extending in the front-to-back direction, the anti-drop assembly (3) comprises a plug connector (3-1) and a plug arm (3-2) fixed to one end of the plug connector (3-1), the plug arm (3-2) is plugged into the slot one (1-2a) on the grinder (1), and a locking mechanism is provided between the plug connector (3-1) and the grinder support (2).

2. The quick-maintenance grinding subassembly according to claim 1, characterized in that: The grinding sub-holder (2) has a protrusion (2-2) extending and protruding to the outside of the front side or the outside of the rear side, the protrusion (2-2) has a receiving cavity (2-2a) and a protruding hole (2-2c) connected to the receiving cavity (2-2a), the inner end of the receiving cavity (2-2a) is connected to the plug groove (2-1), the plug connector (3-1) is adapted to the receiving cavity (2-2a), the plug connector (3-1) is embedded in the receiving cavity (2-2a), the plug connector (3-1) has a receiving cavity (3-1a) and a protruding hole (2-2c) connected to the receiving cavity (2-2a), The second extending hole (3-1b) is connected to the second accommodating cavity (3-1a), an elastic element (5) is embedded in the second accommodating cavity (3-1a), a hook tongue (4) is installed on the elastic element (5), one end of the hook tongue (4) is accommodated in the second accommodating cavity (3-1a), and the other end of the hook tongue (4) passes through the corresponding second extending hole (3-1b) and the first extending hole (2-2c) in sequence and extends to the outside of the protrusion (2-2), the protrusion (2-2), the first accommodating cavity (2-2a), the extending hole (2-2c), the second accommodating cavity (3-1a), the extending hole (3-1b), the elastic element (5) and the hook tongue (4) constitute the locking mechanism.

3. The quick-maintenance grinding subassembly according to claim 2, characterized in that: The extension hole one (2-2c), the extension hole two (3-1b) and the hook tongue (4) each include two, the two extension holes one (2-2c) are correspondingly arranged on the left and right sides of the accommodating chamber one (2-2a), the two extension holes two (3-1b) are correspondingly arranged on the left and right sides of the accommodating chamber two (3-1a), the elastic element (5) is a spring, and one end of the two hook tongues (4) located inside the accommodating chamber two (3-1a) is respectively connected to one end of the spring (5).

4. The quick-maintenance grinding subassembly according to claim 3, characterized in that: The top wall of the accommodating chamber 1 (2-2a) is provided with a plurality of through holes 1 (2-2d) which are connected with the accommodating chamber 1 (2-2a), and the top wall of the accommodating chamber 2 (3-1a) is provided with through holes 2 (3-1c).

5. The quick-maintenance grinding subassembly according to claim 4, characterized in that: The inner side surface of the bottom wall of the accommodating chamber one (2-2a) is provided with a slot three (2-2b) connected to the accommodating chamber one (2-2a); the lower side surface of the grinding sub-holder (2) is provided with a slot two (2-1a) connected to the plug-in slot (2-1); a positioning slot (2-1b) is further provided on a side edge of the plug-in slot (2-1) away from the protrusion (2-2); and the slot three (2-2b), the slot two (2-1a) and the positioning slot (2-1b) correspond to each other; one end of the plug-in arm (3-2) on the anti-detachment component (3) is fixedly arranged on the lower side of one end of the plug connector (3-1); the free end of the plug-in arm (3-2) passes through the slot three (2-2b) and the slot two (2-1a) in sequence and is clamped in the positioning slot (2-1b).

6. The quick-maintenance grinding subassembly according to claim 5, characterized in that: The end of the hook tongue (4) located inside the second accommodating chamber (3-1a) has a retaining eave (4-1) that limits it inside the second accommodating chamber (3-1a), and the end of the hook tongue (4) located inside the second accommodating chamber (3-1a) also has a snap-in groove (4-2), and the end of the spring (5) is inserted into the snap-in groove (4-2) on the corresponding hook tongue (4).

7. The quick-maintenance grinding subassembly according to claim 6, characterized in that: One end of the hook tongue (4) extending out of the protruding hole 2 (3-1b) is provided with a pin hole 2 (4-3) penetrating the upper and lower end surfaces, and the top wall of the accommodating cavity 1 (2-2a) is provided with a pin hole 1 (2-2e) located on both sides, and also includes an N-shaped elastic pin (6) located on the top of the protrusion (2-2). When the grinder (1) and the grinder holder (2) are assembled and locked through the anti-slip assembly (3), the two ends of the N-shaped elastic pin (6) are respectively connected to a group of corresponding pin holes 1 (2-2e) and pin holes 2 (4-3).

8. The quick-maintenance grinding subassembly according to claim 7, characterized in that: The protrusion (2-2) is located at the left end or right end of the plug-in slot (2-1) on the grinding sub-holder (2), or the protrusion (2-2) is located in the middle of the plug-in slot (2-1) on the grinding sub-holder (2); the upper side surface of the plug-in block (1-2) and the lower side surface of the grinding sub-holder (2) are both provided with a weight-reducing groove (A).

9. The quick-maintenance grinding subassembly according to any one of claims 1 to 8, characterized in that: A pair of ear plates (2-3) are provided on the upper side of the grinding sub-holder (2), and mounting holes (2-3a) are provided on the ear plates (2-3). The projection of the ear plates (2-3) on the upper side of the grinding sub-holder (2) is consistent with the relative sliding plug-in direction between the plug-in block (1-2) and the plug-in slot (2-1).

10. The quick-maintenance grinding subassembly according to claim 9, characterized in that: An abutment block (2-4) located at the lower side edge of the mounting hole (2-3a) is fixedly provided on a side surface of an ear plate (2-3) close to the protrusion (2-2) facing the protrusion (2-2); the plug-in slot (2-1) is a dovetail slot, and the plug-in block (1-2) is a wedge-shaped protrusion matched with the plug-in slot (2-1).

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