CN114837511A

CN114837511A - Double-tail-wheel damping assembly

Info

Publication number: CN114837511A
Application number: CN202210395486.8A
Authority: CN
Inventors: 许姜德
Original assignee: Guangdong OPK Smart Home Technology Co Ltd
Current assignee: Guangdong OPK Smart Home Technology Co Ltd
Priority date: 2022-04-15
Filing date: 2022-04-15
Publication date: 2022-08-02

Abstract

The invention provides a double-tail-wheel damping assembly which comprises a buffering assembly, wherein the buffering assembly at least comprises a shell, one end of the shell is provided with a tail connecting piece, and a tail wheel hanging frame is detachably arranged on the tail connecting piece; the tail connecting piece is provided with a first pulley, and the tail wheel hanging frame is provided with a second pulley. The detachable connection mode of the tail connecting piece and the tail wheel hanging rack ensures that the double-tail wheel damping assembly can be installed and detached with the slide rail in a matched manner under the condition that the slide rail is complete, so that the structural strength of the slide rail is ensured, the use is convenient, and the safety is higher.

Description

Double-tail-wheel damping assembly

Technical Field

The invention relates to the technical field of hardware accessories, in particular to a double-tail-wheel damping assembly.

Background

The sliding door is also called a sliding door, the door leaf is connected with the door frame in a sliding manner, the door is opened or closed by the transverse movement of the door leaf, the space can be saved to a certain extent, and the application is wide. In order to reduce the impact collision between the door leaf and the door frame, the damping assembly is usually used to assist the opening or closing of the door leaf, so as to effectively absorb the impact of the door leaf on the door frame. But the damping assembly is difficult to install due to the limitation of the whole width (mainly the pulleys on two sides) of the damping assembly. The conventional means mostly adopts a mode of arranging an access hole on a slide rail to solve the problems, but the processing precision requirement of the access hole is high, which undoubtedly increases the processing cost.

Chinese patent publication No. CN216043246U discloses a buffering hanging wheel capable of being replaced quickly without leaving an access hole, which includes a slide rail, a sliding bracket and a roller train, wherein the end of the sliding bracket is installed with an abutting block, and the roller train is movably hinged to the abutting block to assemble the roller train and the sliding bracket into a whole; the sliding rail comprises a main sliding rail and a sliding rail head, the main sliding rail and the sliding rail head are of a separated structure, the sliding support and the roller set slide in the main sliding rail, and the roller set is close to the sliding head relative to the sliding support. The simple structure of above-mentioned patent can realize the change of buffering hanging wheel under the condition of not seting up the access hole.

But adopt the scheme with the slide rail separation in the above-mentioned patent to destroy the wholeness of slide rail, weakened the intensity of slide rail, simultaneously, the structure of disconnect-type has higher requirement to the assembly precision of main slide rail and slide rail head, otherwise can influence the rolling smoothness nature of gyro wheel in the slide rail, influence user experience.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide the double-tail-wheel damping assembly, the tail connecting piece and the tail-wheel hanging rack are arranged in a detachable manner, so that the double-tail-wheel damping assembly can be installed and detached with the slide rail in a matched manner under the condition that the slide rail is complete, and the structural strength of the slide rail is ensured.

The embodiment of the invention is realized by the following technical scheme:

a double-tail-wheel damping assembly comprises a buffering assembly, wherein the buffering assembly at least comprises a shell, one end of the shell is provided with a tail connecting piece, and a tail wheel hanging frame is detachably arranged on the tail connecting piece; the tail connecting piece is provided with a first pulley, and the tail wheel hanging frame is provided with a second pulley.

According to a preferred embodiment, the housing is detachably connected to the tail connector.

According to a preferred embodiment, the caudal connector includes a body; the tail wheel hanging rack is provided with an extension bulge matched with the clamping blind hole, and the extension bulge is provided with a positioning screw hole; when the extending protrusion is embedded in the clamping blind hole, the fixing hole can be coaxial with the positioning screw hole.

According to a preferred embodiment, the tail connector comprises a body, the other end of the body being provided with an internal block extending into and fixedly connected with the housing.

According to a preferred embodiment, the inner connecting block is provided with at least two inner pin holes; and the side wall of the shell is provided with at least two outer pin holes which are in one-to-one correspondence with the at least two inner pin holes.

According to a preferred embodiment, a clamping block is arranged on the tail wheel hanging frame, and a clamping groove matched with the clamping block is arranged on the tail connecting piece; the clamping block is embedded in the clamping groove in a sliding manner; the clamping block is configured to be separated from the clamping groove only in a sliding mode along the extending direction of the clamping groove.

According to a preferred embodiment, the clamping groove is a trapezoidal groove.

According to a preferred embodiment, the fixture block is arranged on the inner side surface of the tail wheel hanger, an abdicating groove is formed in the fixture block, and the extending direction of the abdicating groove is parallel to the extending direction of the clamping groove; the bottom of the clamping groove is provided with a convex strip; when the clamping block is embedded in the clamping groove, the convex strip extends into the abdicating groove.

According to a preferred embodiment, the first pulley is provided with a rolling groove a along the circumferential side of the first pulley, and the second pulley is provided with a rolling groove b along the circumferential side of the second pulley; the width of the rolling groove a is larger than that of the rolling groove b, or the width of the rolling groove b is larger than that of the rolling groove a.

According to a preferred embodiment, the tail wheel hanger is provided with a second auxiliary hole.

The technical scheme of the embodiment of the invention at least has the following advantages and beneficial effects:

the double-tail-wheel damping assembly is simple in structure, the double-tail-wheel damping assembly can be installed and detached in a matched mode with the slide rail under the condition that the slide rail is complete due to the detachable connection mode of the tail connecting piece and the tail wheel hanging frame, the structural strength of the slide rail is guaranteed, the use is convenient, and meanwhile the safety is higher.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a dual rear wheel damping assembly according to an embodiment of the present invention;

fig. 2 is a schematic view of a first three-dimensional structure of a hanger hanging pulley provided in the embodiment of the present invention;

fig. 3 is a schematic perspective view of a second three-dimensional structure of a hanger hanging pulley according to an embodiment of the present invention;

fig. 4 is a left side view structural schematic diagram of a hanger hanging pulley provided in the embodiment of the present invention;

fig. 5 is an exploded view of a hanger pulley according to an embodiment of the present invention;

FIG. 6 is an enlarged view of a portion of the structure of FIG. 5 at A;

FIG. 7 is a schematic perspective view of a second hanger according to the present invention;

FIG. 8 is a schematic perspective view of a first hanger according to the present invention;

FIG. 9 is a schematic perspective view of a tail wheel assembly provided in accordance with an embodiment of the present invention;

FIG. 10 is a schematic right-view structural diagram of a tail wheel assembly provided in an embodiment of the present invention;

FIG. 11 is a schematic perspective view of a tail wheel hanger according to the present invention;

FIG. 12 is a schematic perspective view of a tail connector of the present invention;

FIG. 13 is an axial cross-sectional view of the slide rail;

fig. 14 is an assembly view of a double tail wheel damping assembly and a slide rail according to an embodiment of the present invention;

fig. 15 is an assembly schematic view of a hanger hanging pulley and a slide rail provided in the embodiment of the present invention.

Icon: 1-housing, 11-connector, 12-fixing bolt, 2-hanger hanging pulley, 21-first hanger, 211-mounting lug, 2111-through hole, 212-third pulley, 213-first reinforcing block, 214-extension plate, 2141-second hanging screw hole, 215-guide block, 216-first screw hole, 22-second hanger, 221-second reinforcing block, 222-fourth pulley, 223-second screw hole, 224-first auxiliary hole, 225-guide groove, 23-first hanging screw hole, 231-second half screw hole, 232-first half screw hole, 24-blocking block, 25-mounting plate, 251-bristle, 26-first locking screw, 27-mounting blind hole, 28-extension groove, 3-tail pulley assembly, 31-tail connecting piece, 311-main body, 3111-fixing hole, 3112-clamping blind hole, 312-external connecting piece, 3121-clamping groove, 313-internal connecting piece, 3131-internal pin hole, 314-first pulley, 3141-convex strip, 3142-rolling groove a, 32-tail wheel hanging rack, 321-second auxiliary hole, 322-second pulley, 3221-rolling groove b, 323-clamping block, 3231-abdicating groove, 324-extending protrusion, 3241-positioning screw hole, 33-second locking screw, 4-sliding rail, 41-sliding groove, 42-rail, 5-hexagonal wrench and 6-hoisting piece.

Detailed Description

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 to 15, a dual tail wheel damping assembly includes a damping assembly, as shown in fig. 1 and 14, a tail wheel assembly 3 is detachably mounted on the damping assembly; the tail wheel assembly 3 comprises a tail connecting piece 31 connected to the buffer assembly, and a tail wheel hanging frame 32 is detachably arranged on the tail connecting piece 31; the first pulley 314 is disposed on the tail link 31, and the second pulley 322 is disposed on the tail wheel hanger 32. In this embodiment, the buffering assembly at least includes a housing 1, and a tail connector 31 is detachably disposed at one end of the housing 1. In this embodiment, the tail wheel assembly 3 is composed of the tail connecting member 31 and the tail wheel hanger 32, so that when in use, the tail connecting member 31 and the housing 1 are fixedly mounted, and then the housing 1 is used as a support, the tail connecting member 31 is installed into the slide rail 4 from the slide groove 41, so that the first pulley 314 is connected with the rail 42 in a matching manner. And then, the tail wheel hanging rack 32 is loaded into the slide rail 4 from the slide groove 41, and the tail wheel hanging rack 32 is driven to move to the position close to the tail connecting piece 31 along the track 42 until the tail wheel hanging rack 32 and the tail connecting piece 31 can be connected, and finally, the tail wheel hanging rack 32 and the tail connecting piece 31 are fixedly connected. Accordingly, in the disassembly, the fixing member is first removed between the two, then the two are separated in the extending direction of the rail 42, and then the two are sequentially removed through the chute 41.

The tail wheel assembly 3 enables the double-tail wheel damping assembly to be installed and detached with the sliding rail 4 in a matched mode under the complete condition of the sliding rail 4, the structural strength of the sliding rail 4 is guaranteed, and the double-tail wheel damping assembly is convenient to use and high in safety.

Further, as shown in fig. 9, 10, 11 and 12, the tail connector 31 includes a main body 311; the main body 311 is provided with a blind fastening hole 3112 and a fixing hole 3111 which are communicated with each other, the tail wheel hanger 32 is provided with an extending projection 324 adapted to the blind fastening hole 3112, and the extending projection 324 is provided with a positioning screw hole 3241; when the extending protrusion 324 is inserted into the engaging blind hole 3112, the fixing hole 3111 can be coaxial with the positioning screw hole 3241. In this embodiment, when the extension protrusion 324 is embedded in the blind engaging hole 3112 and the fixing hole 3111 is coaxial with the positioning screw hole 3241, as shown in fig. 14, the tail connecting member 31 is detachably connected to the tail wheel hanger 32 by a way that the second locking screw 33 sequentially penetrates through the fixing hole 3111 and the positioning screw hole 3241. The fixing hole 3111 can be exposed through the sliding groove 41, which is convenient for the operator to operate.

In this embodiment, dispose second auxiliary hole 321 on the tailwheel stores pylon 32, second auxiliary hole 321 is the hexagonal hole, and the staff of being convenient for uses hexagonal spanner 5 to exert external force to tailwheel stores pylon 32 through spout 41, is convenient for carry out dismouting operation to tailwheel stores pylon 32 and afterbody connecting piece 31 in the narrow and small space in slide rail 4.

In this embodiment, as shown in fig. 12, an external block 312 is disposed at one end of the main body 311, and a first pulley 314 is rotatably mounted to the external block 312. The other end of the main body 311 is provided with an internal connection block 313, the internal connection block 313 extends into the shell 1, wherein: at least two inner pin holes 3131 are arranged on the inner connecting block 313; at least two outer pin holes corresponding to the at least two inner pin holes 3131 one to one are disposed on the side wall of the housing 1. In the present embodiment, the number of the inner pin holes 3131 and the outer pin holes is two.

As shown in fig. 10 and 12, the tail wheel hanger 32 is provided with a latch 323, and the tail connecting member 31 is provided with a latch 3121 adapted to the latch 323; the clamping block 323 is embedded in the clamping groove 3121 in a sliding manner; the latch 323 is configured to be disengaged from the latch groove 3121 only in a manner of sliding in the extending direction of the latch groove 3121.

In this embodiment, the engaging groove 3121 is disposed on the inner side surface of the external connecting block 312, and the engaging block 323 is disposed on the inner side surface of the tail wheel hanger 32. Preferably, the extending direction of the locking groove 3121 is parallel to the extending direction of the external block 312, and when the external block 312 is installed in the sliding rail 4, the extending direction of the locking groove 3121 is parallel to the extending direction of the rail 42. The clamping block 323 is matched with the clamping groove 3121 to realize the connection of the tail wheel hanging frame 32 and the tail connecting piece 31, so that the tail wheel hanging frame and the tail connecting piece are not separable in any direction except the extending direction of the clamping groove 3121, the structure is stable, the strength requirement of the tail wheel assembly 3 can be ensured, and the safety is high. When the tail wheel hanging rack is used, as shown in fig. 14, when the tail wheel hanging rack 32 and the tail connecting piece 31 are close to and connected with each other, the clamping block 323 is embedded into the clamping groove 3121 from the end portion of the clamping groove 3121, the combined assembly of the tail wheel hanging rack 32 and the tail connecting piece 31 can be completed, the operation is simple, a worker can conveniently and rapidly assemble the tail wheel hanging rack 32 and the tail connecting piece 31 through the narrow space of the sliding groove 41 in the sliding rail 4, the operability is high, the installation difficulty of the tail wheel assembly 3 is reduced, and meanwhile, the improvement of the working efficiency is facilitated.

In this embodiment, the slot 3121 is a trapezoidal slot. As shown in fig. 10 and 12, the narrow end of the slot 3121 penetrates through the inner side surface of the external block 312, so that the slot 3121 can limit the latch 323 in the clamping manner. In other embodiments, the cross section of the slot 3121 can be other shapes; the shape of the latching groove 3121 may be determined such that the latching block 323 can be engaged with the latching block 323, and the latching block 323 can only be separated from the latching groove 3121 in a manner of sliding along the extending direction of the latching groove 3121.

Further, the fixture block 323 is arranged on the inner side surface of the tail wheel hanger 32, the fixture block 323 is provided with a yielding groove 3231, and the extending direction of the yielding groove 3231 is parallel to the extending direction of the clamping groove 3121; the bottom of the clamping groove 3121 is provided with a convex strip 3141; when the latch 323 is inserted into the latching groove 3121, the protruding strip 3141 extends into the receding groove 3231. In this embodiment, the protruding strip 3141 cooperates with the abdicating groove 3231 to make the connection between the tail wheel hanger 32 and the tail wheel connector more firm, and meanwhile, a certain guiding effect can be achieved on the cooperation of the clamping groove 3121 and the clamping block 323. In other embodiments, the rib 3141 may be a mounting shaft of the first pulley 314.

Preferably, the latch 323 is integrally formed with the tailwheel hanger 32. Preferably, the external block 312, the main body 311 and the internal block 313 are distributed in sequence and integrally formed.

Further, a rolling groove a3142 is circumferentially arranged on the first pulley 314 along the circumferential side thereof, and a rolling groove b3221 is circumferentially arranged on the second pulley 322 along the circumferential side thereof; the width of the rolling groove a3142 is greater than the width of the rolling groove b3221, or the width of the rolling groove b3221 is greater than the width of the rolling groove a 3142. As shown in fig. 10, in the present embodiment, the width of the rolling groove b3221 is greater than the width of the rolling groove a 3142. As shown in fig. 13, the inconsistent widths of the rolling groove b3221 and the rolling groove a3142 may enable the tail wheel assembly 3 to have a floating gap in the width direction of the slide rail 4, so as to avoid the double tail wheel damping assembly from being stuck in the slide rail 4

The embodiment further provides a hanger hanging pulley 2 detachably mounted on the housing 1 and installed in the sliding rail 4 through the sliding groove 41, including: a first hanger 21 provided with a third pulley 212; a second hanger 22 provided with a fourth pulley 222; the sum of the widths of the first hanging rack 21 and the third pulley 212 is smaller than the width of the sliding groove 41; the sum of the widths of the second hanging rack 22 and the fourth pulley 222 is smaller than the width of the sliding chute 41; the first hanger 21 is detachably connected to the second hanger 22. Both the structure of the first hanger 21 assembled with the third pulley 212 and the structure of the second hanger 22 assembled with the fourth pulley 222 can be installed in the slide rail 4 through the sliding groove 41, so that the third pulley 212 and the fourth pulley 222 are installed in cooperation with the rail 42, specifically as shown in fig. 15, when in use, the first hanger 21 is first installed in the slide rail 4 through the sliding groove 41 to be matched with the rail 42 on one side, the second hanger 22 is then installed in the slide rail 4 through the sliding groove 41 to be matched with the rail 42 on the other side, and then the first hanger 21 and the second hanger 22 are moved in the slide rail 4 in the opposite direction until the positions of the first hanger 21 and the second hanger 22 are overlapped in the axial direction of the slide rail 4, and at this time, the first hanger 21 and the second hanger 22 are fixedly connected in the slide rail 4 through the fixing member. It should be noted that the order of installing the first hanger 21 and the second hanger 22 is not required here.

Correspondingly, when the hanger pulley 2 needs to be detached from the slide rail 4, the fixing part is firstly detached, and then the first hanger 21 and the second hanger 22 move back in the slide rail 4 until the first hanger 21 and the second hanger 22 are separated, at which time the first hanger 21 and the second hanger 22 can be detached from the slide groove 41 respectively.

The hanging rack hanging pulley 2 adopts a combined structure, so that the dismounting and mounting steps of the hanging rack hanging pulley 2 on the slide rail 4 are simplified, and the dismounting and mounting efficiency of the hanging rack hanging pulley 2 can be effectively improved; meanwhile, the structure of an access hole formed in the sliding rail 4 in the traditional process is avoided, the structural strength of the sliding rail 4 is guaranteed, the safety is high, and the practicability is high.

In this embodiment, the first hanger 21 or the second hanger 22 is detachably mounted to the buffer assembly. Furthermore, the end of the housing 1 is provided with a connector 11, the connector 11 is provided with a groove, the mounting lug 211 is embedded into the groove, the mounting lug 211 is provided with a through hole 2111, and the fixing bolt 12 penetrates through the through hole 2111 to fix the mounting lug 211 on the connector 11, so that the hanging rack hanging pulley 2 and the housing 1, namely the buffer assembly, can be detachably connected.

In the present embodiment, as shown in fig. 7 and 15, the second hanger 22 is provided with a first auxiliary hole 224, and the first auxiliary hole 224 can be exposed through the chute 41. Here, the first auxiliary hole 224 is a hexagonal hole. When the second hanger 22 is detached, the hexagonal wrench 5 is inserted into the first auxiliary hole 224 from the chute 41 to apply a force to the second hanger 22.

Further, a guide groove 225 is arranged on the first hanger 21, and a guide block 215 matched with the guide groove 225 is arranged on the second hanger 22; or the second hanger 22 is provided with a guide groove 225, and the first hanger 21 is provided with a guide block 215 matched with the guide groove 225; the guide block 215 is slidably embedded in the guide groove 225; the guide block 215 is configured to be disengaged from the guide groove 225 only in a slidable manner in the extending direction of the guide groove 225. As shown in fig. 4, 5, 7 and 8, in the present embodiment, the guide groove 225 is provided on the inner side surface of the second hanger 22, and the guide block 215 is provided on the inner side surface of the first hanger 21. Preferably, the extending direction of the guide groove 225 is parallel to the extending direction of the second hanger 22, and when the second hanger 22 is installed in the slide rail 4, the extending direction of the guide groove 225 is parallel to the extending direction of the rail 42. The guide block 215 is matched with the guide groove 225 to realize the connection of the first hanging rack 21 and the second hanging rack 22, so that the first hanging rack and the second hanging rack are not separable in any direction except the extending direction of the guide groove 225, the structure is stable, the strength requirement of the hanging rack hanging pulley 2 can be ensured, and the safety is high. When the hanger is used, as shown in fig. 15, when the first hanger 21 and the second hanger 22 are close to and connected with each other, the guide block 215 is embedded into the guide groove 225 from the end of the guide groove 225 to complete the assembly of the first hanger 21 and the second hanger 22, the operation is simple, the worker can assemble the first hanger 21 and the second hanger 22 quickly through the narrow space of the sliding groove 41 in the sliding rail 4, the operability is high, and the improvement of the working efficiency is facilitated while the installation difficulty of the hanger hanging wheel 2 is reduced.

In order to further improve the strength and stability of the first hanger 21 and the second hanger 22 after connection, the number of the guide grooves 225 is two, and accordingly, the number of the guide blocks 215 is two. In other embodiments, the number of the guide grooves 225 and the guide blocks 215 may be specifically set according to the need and the sizes of the first and

second hangers

21 and 22, and is not particularly limited herein.

In this embodiment, the guide groove 225 is a trapezoidal groove. As shown in fig. 4, the narrow end of the slot 3121 penetrates through the inner side surface of the second hanger 22, so that the guide block 215 can be clamped and limited. In other embodiments, the cross section of the guide groove 225 may be a major arc segment of a circle, or may be other shapes; the shape of the guide groove 225 here is sufficient to enable the guide block 215 to be engaged with the guide groove 225 so that the guide block 215 can be disengaged from the guide groove 225 only in a sliding manner in the direction in which the guide groove 225 extends.

In this embodiment, the first hanging rack 21 is configured with a first screw hole 216, and the second hanging rack 22 is configured with a second screw hole 223; the first screw holes 216 and the second screw holes 223 are distributed correspondingly; the first screw hole 216 and the second screw hole 223 can be coaxial when the first hanger 21 is coupled to the second hanger 22. In this embodiment, as shown in fig. 5, the fixing member is a first locking screw 26. In use, when the guide block 215 is inserted into the guide groove 225, the first hanger 21 and the second hanger 22 are pushed continuously so that the first screw hole 216 and the second screw hole 223 are coaxial, and the first locking screw 26 is inserted into the first screw hole 216 and the second screw hole 223 in sequence, so as to fix the relative positions of the first hanger 21 and the second hanger 22. Preferably, the number of the first screw holes 216 is two, and correspondingly, the number of the second screw holes 223 is two, so that the stability of the assembled first hanger 21 and second hanger 22 is good. In other embodiments, the number of the first screw holes 216 and the second screw holes 223 may be specifically set according to requirements, and is not particularly limited herein.

It should be noted that the first screw hole 216 may be a light hole, and the inner diameter thereof is slightly larger than the outer diameter of the first locking screw 26.

In this embodiment, in order to facilitate the operation of the worker, the first screw hole 216 is disposed on the lower side of the first hanging rack 21, and the second screw hole 223 is disposed on the lower side of the second hanging rack 22, wherein: the first screw hole 216 may be exposed through the slide groove 41. Further, in order to facilitate the assembly of the first hanger 21 and the second hanger 22, as shown in fig. 3, 4 and 8, an extension plate 214 is provided on the first hanger 21; the width of the extension plate 214 is smaller than the width of the chute 41; the first screw hole 216 is disposed through the extension plate 214; the extension plate 214 is provided with a second lifting screw hole 2141. Preferably, the extension plate 214 is integrally formed with the first hanger 21. In this embodiment, the extension plate 214 is disposed at the lower side of the first hanging rack 21, so that the first hanging rack 21 can be conveniently installed in the sliding rail 4. When the first hanger 21 and the second hanger 22 are connected, the second hanger 22 is positioned at the upper side of the extension plate 214.

As shown in fig. 8 and 15, the hoist 6 is screw-coupled to the second hoist screw hole 2141 by a screw. The second lifting screw hole 2141 can be exposed through the slide groove 41. The first hanging rack 21 and the second hanging rack 22 are convenient to disassemble and assemble through the hanging piece 6 matched with the hexagonal wrench 5.

In order to facilitate the assembly of the hanger pulley 2 with other parts, the first hanger 21 or the second hanger 22 is provided with a mounting lug 211. In this embodiment, the mounting ear 211 is disposed on the first hanger 21 and integrally formed therewith.

As shown in fig. 2, 3 and 5, the inner side surface of the first hanger 21 is provided with a first half screw hole 232, and the inner side surface of the second hanger 22 is provided with a second half screw hole 231; when the first hanger 21 is connected to the second hanger 22, the first half screw hole 232 and the second half screw hole 231 can surround to form the first hanging screw hole 23. In this embodiment, the first hoisting screw holes 23 are distributed on the upper side of the second hoisting screw hole 2141, and are used for being in threaded connection with the screw installed on the hoisting member 6 on the basis of the second hoisting screw hole 2141, and the firmness is strong. In other embodiments, the first lifting screw hole 23 may be a smooth hole, and the inner diameter thereof is slightly larger than that of the second lifting screw hole 2141, so as to avoid the screw rod mounted on the lifting member 6.

Further, in order to increase the structural strength of the first hanger 21 and the second hanger 22, a first reinforcing block 213 is integrally disposed on the outer side surface of the first hanger 21, and the first reinforcing block 213 is distributed near the first half screw hole 232; a second reinforcing block 221 is integrally formed on the outer side surface of the second hanger 22, and the second reinforcing block 221 is distributed near the second half screw hole 231.

As shown in fig. 3 and 5, the first hanger 21 and the second hanger 22 are both provided with a brush assembly; the brush components on the first hanging rack 21 are distributed corresponding to the third pulley 212; the brush assemblies on the second hanger 22 are distributed corresponding to the fourth pulley 222. Further, the brush assembly includes a mounting plate 25, on which bristles 251 are arranged; the first hanger 21 and the second hanger 22 are fixedly connected to the corresponding mounting plates 25, respectively. Furthermore, as shown in fig. 6, the outer side surfaces of the first hanger 21 and the second hanger 22 are respectively provided with a blind mounting hole 27, and the side wall of the blind mounting hole 27 is provided with an extending groove 28; the mounting plate 25 is embedded in the mounting blind hole 27, and the bristles 251 extend out of the mounting blind hole 27 through the extension groove 28; the open end of the mounting blind hole 27 is clamped with a plugging block 24.

The brush assembly is convenient to detach and replace, in the using process, the brush bristles 251 are always abutted to the surface of the rail 42 corresponding to the third pulley 212 and the fourth pulley 222, dust on the surface of the rail 42 can be cleaned in real time in the moving process of the hanging rack hanging pulley 2, and therefore the smoothness of the matching of the pulley and the rail 42 is guaranteed.

The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.

Claims

1. The double-tail-wheel damping assembly is characterized by comprising a damping assembly, wherein the damping assembly at least comprises a shell (1), one end of the shell (1) is provided with a tail connecting piece (31), and a tail wheel hanging frame (32) is detachably arranged on the tail connecting piece (31);

the tail connecting piece (31) is provided with a first pulley (314), and the tail wheel hanging frame (32) is provided with a second pulley (322).

2. Double tail wheel damping assembly according to claim 1, characterized in that the housing (1) is detachably connected with the tail connector (31).

3. The twin tail wheel damping assembly as defined in claim 1, wherein the tail connector (31) includes a body (311);

the tail wheel hanger (32) is provided with an extending bulge (324) matched with the clamping blind hole (3112), and the extending bulge (324) is provided with a positioning screw hole (3241);

when the extension protrusion (324) is embedded in the clamping blind hole (3112), the fixing hole (3111) can be coaxial with the positioning screw hole (3241).

4. The tandem damping assembly according to claim 1, wherein the rear connection member (31) comprises a main body (311), the other end of the main body (311) is provided with an inner joint block (313), and the inner joint block (313) extends into the housing (1) and is fixedly connected with the housing (1).

5. The twin tail wheel damping assembly as set forth in claim 4 wherein the inner block (313) is configured with at least two inner pin holes (3131);

the side wall of the shell (1) is provided with at least two outer pin holes which are in one-to-one correspondence with the at least two inner pin holes (3131).

6. The double-tail-wheel damping assembly according to any one of claims 1 to 5, wherein a fixture block (323) is arranged on the tail-wheel hanger (32), and a clamping groove (3121) matched with the fixture block (323) is arranged on the tail connecting piece (31);

the clamping block (323) is embedded in the clamping groove (3121) in a sliding manner;

the latch block (323) is configured to be capable of being disengaged from the latch groove (3121) only in a manner of sliding in the extending direction of the latch groove (3121).

7. The twin tail wheel damping assembly as in claim 6 wherein the catch groove (3121) is a trapezoidal groove.

8. The double-tailwheel damping assembly according to claim 6, wherein the fixture block (323) is disposed on an inner side surface of the tailwheel hanger (32), a yielding groove (3231) is formed in the fixture block (323), and an extending direction of the yielding groove (3231) is parallel to an extending direction of the clamping groove (3121);

a convex strip (3141) is arranged at the bottom of the clamping groove (3121);

when the clamping block (323) is embedded in the clamping groove (3121), the convex strip (3141) extends into the abdicating groove (3231).

9. The double-tailed-wheel damping assembly according to claim 1, wherein the first pulley (314) is circumferentially provided with a rolling groove a (3142) along a circumferential side thereof, and the second pulley (322) is circumferentially provided with a rolling groove b (3221) along a circumferential side thereof;

the width of the rolling groove a (3142) is greater than that of the rolling groove b (3221), or

The width of the rolling groove b (3221) is greater than that of the rolling groove a (3142).

10. The double-tailed wheel damping assembly according to claim 1, 2, 3, 4, or 9, wherein the tailed wheel hanger (32) is configured with a second auxiliary hole (321).