CN111546955A

CN111546955A - Rotary limiting mechanism of seat, seat and engineering vehicle

Info

Publication number: CN111546955A
Application number: CN202010153584.1A
Authority: CN
Inventors: 卿丽纯; 郭方云; 徐亮; 肖久焜; 方怡红
Original assignee: Hunan Shuangda Electromechanical Co ltd
Current assignee: Hunan Shuangda Electromechanical Co ltd
Priority date: 2020-03-06
Filing date: 2020-03-06
Publication date: 2020-08-18

Abstract

An aspect of an embodiment of the present application provides a rotation limiting mechanism of a seat, where the rotation limiting mechanism includes a rotating member, a supporting member, and an operating member. The supporting part is pivoted with the rotating part. A plurality of first limit keys are formed on the supporting piece. The first limit keys are arranged at intervals along the rotating direction of the rotating piece. The operating member is pivoted with the rotating member. The operating piece is provided with a second limit key. The operating piece can rotate relative to the rotating piece so that the second limit key and the first limit key are locked or unlocked. The second limit key and the first limit key are locked or unlocked through the operating piece, so that the rotating piece is controlled to rotate or stop relative to the supporting piece, and the operation is simple and convenient. Another aspect of the embodiments of the present application provides a seat, including the above-mentioned rotation limiting mechanism and a seat frame. The seat skeleton is connected with the rotation piece, and the seat skeleton can rotate with rotating the piece synchronous revolution. Another aspect of the embodiments of the present application further provides an engineering vehicle, where the engineering vehicle includes the seat, the chassis, the turntable, and the cantilever.

Description

Rotary limiting mechanism of seat, seat and engineering vehicle

Technical Field

The application relates to the technical field of engineering vehicles, in particular to a rotary limiting mechanism of a seat, the seat and an engineering vehicle.

Background

The elevating fire truck is a fire truck capable of ascending to extinguish fire or performing fire rescue, and comprises an arm support, a rotary table, a seat and a chassis, wherein the rotary table is arranged on the chassis, and the arm support and the seat are connected with the rotary table. The rotary table drives the arm support and the seat to rotate, and a user sits on the seat to control the lifting and unfolding angles of the arm support so as to realize ascending fire extinguishment or fire rescue through the arm support. Since the user needs to change the visual field in order to control the lifting and unfolding angles of the arm support during the fire fighting process, the user needs to rotate the seat by a certain angle and lock the seat for changing the visual field.

Disclosure of Invention

In view of this, the embodiment of the present application is expected to provide a rotation limiting mechanism of a seat, the seat and an engineering vehicle, for solving the technical problem that a seat of a fire truck needs to rotate a certain angle and be locked, and in order to solve the technical problem, the technical solution of the embodiment of the present application is implemented as follows:

the embodiment of the application provides a rotatory stop gear of seat, includes:

a rotating member;

the supporting piece is pivoted with the rotating piece, a plurality of first limiting keys are formed on the supporting piece, and the plurality of first limiting keys are arranged at intervals along the rotating direction of the rotating piece; and

the control piece is pivoted with the rotating piece, a second limit key is formed on the control piece, and the control piece can rotate relative to the rotating piece so that the second limit key and the first limit key are locked or unlocked.

Further, the support comprises a support plate and a support pillar connected with the support plate, the support pillar is provided with an installation cavity with two open ends, and a plurality of first limiting keys are formed on the support plate;

the rotary limiting mechanism comprises a rotating shaft, one end of the rotating shaft is connected with the rotating part, and the other end of the rotating shaft passes through the mounting cavity and the supporting column can be detachably connected.

Furthermore, the rotation limiting mechanism comprises a first shaft sleeve, the first shaft sleeve is sleeved at one end, close to the rotating part, of the rotating shaft, the first shaft sleeve comprises a shaft shoulder and a sleeve connected with the shaft shoulder, the shaft shoulder is located between the rotating part and the supporting disc, and the sleeve is located between the rotating shaft and the supporting column;

and/or, the rotary limiting mechanism comprises a second shaft sleeve, the second shaft sleeve is arranged at one end, away from the rotating part, of the rotating shaft, and the second shaft sleeve is positioned between the rotating shaft and the supporting column.

Furthermore, the rotating part comprises a rotating disc and a limiting column connected with the rotating disc, a sliding groove extending along the rotating direction of the rotating part is formed on the supporting disc, the limiting column can slide along the sliding groove, and the operating part is pivoted with the rotating disc;

when the second limiting key and one of the first limiting keys are locked, the limiting column is abutted to one end of the sliding groove, and when the second limiting key and the other one of the first limiting keys are locked, the limiting column is abutted to the other end of the sliding groove.

Furthermore, the limiting column is a bolt, the limiting column is in threaded connection with the rotary disc, and one end of the limiting column is located in the sliding groove;

and/or the supporting plate comprises an upper positioning plate and a lower positioning plate which are respectively connected with the support columns, the sliding groove is formed on the upper positioning plate, and the first limiting key is formed on the lower positioning plate.

Further, the supporting member comprises a flange connected with one end of the support pillar far away from the supporting disk.

Further, the operating member is rotatable relative to the rotating member in a rotational direction of the rotating member;

and/or the rotation limiting mechanism comprises a reset elastic piece, one end of the reset elastic piece is connected with the operating piece, and the other end of the reset elastic piece is connected with the rotating piece;

and/or the first limiting key is matched with the second limiting key, one of the first limiting key and the second limiting key is an inserting hook, and the other of the first limiting key and the second limiting key is a locking groove.

Another aspect of the embodiments of the present application provides a seat, including:

the rotation limiting mechanism according to any one of the above aspects; and

the seat frame, the seat frame with rotate the piece and be connected, the seat frame can with rotate the synchronous rotation of piece.

Further, the seat frame includes:

the base is connected with the rotating piece;

the pedal comprises a supporting plate with a curled edge and a pedal with a curled edge, wherein the supporting plate is connected with the base, and the pedal is connected with the supporting plate; and

the two handrails are positioned on two sides of the base, one end of each handrail is connected with the base, and the other end of each handrail is connected with the pedals.

Another aspect of the embodiments of the present application further provides an engineering vehicle, including:

the seat described above;

a chassis;

the rotary table is pivoted with the chassis; and

the cantilever, the one end of cantilever with the revolving stage is connected, the other end of cantilever with support piece is connected.

The embodiment of the application provides a rotatory stop gear of seat on the one hand, and the control part pivots with rotating the piece, that is to say, the control part can rotate for rotating the piece. And because the operation piece is pivoted with the rotating piece, the rotating piece is pivoted with the supporting piece, and the rotating piece can drive the operation piece to synchronously rotate relative to the supporting piece. The second limit key and the first limit key are locked or unlocked through the operating piece, so that the rotating piece is controlled to rotate or stop relative to the supporting piece, and the operation is simple and convenient. Another aspect of the embodiments of the present application provides a seat, including the above-mentioned rotation limiting mechanism and a seat frame. Another aspect of the embodiments of the present application further provides an engineering vehicle, where the engineering vehicle includes the seat, the chassis, the turntable, and the cantilever. The seat and the engineering vehicle provided by the embodiment of the application have the same beneficial effects as the rotation limiting mechanism of the seat.

Drawings

Fig. 1 is a schematic structural diagram of a first view angle of a rotation limiting mechanism of a seat according to an embodiment of the present application;

FIG. 2 is a second perspective view of the rotation limiting mechanism of the seat of FIG. 1;

FIG. 3 is a schematic diagram of a third perspective view of the rotation limiting mechanism of the seat of FIG. 1;

FIG. 4 is a schematic diagram of a fourth perspective view of the rotation limiting mechanism of the seat of FIG. 1;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

FIG. 6 is an exploded view of the rotation limiting mechanism of the seat of FIG. 1;

FIG. 7 is a schematic structural diagram of a first perspective of a seat provided in an embodiment of the present application;

FIG. 8 is a schematic view of the seat of FIG. 7 from a second perspective;

FIG. 9 is a schematic view of the seat of FIG. 7 from a third perspective;

fig. 10 is a schematic structural diagram of an engineering vehicle according to an embodiment of the present application.

Description of the reference numerals

A work vehicle 1; a seat 1000; a rotation limiting mechanism 100; a rotating member 110; a turntable 111; a stopper post 112; a support 120; a first limit key 121; a support plate 122; the slide grooves 122 a; an upper positioning plate 1221; a lower positioning plate 1222; a support post 123; mounting cavity 123 a; a flange 124; a manipulation member 130; a second limit key 131; a rotating shaft 140; a first bushing 150; a shoulder 151; a sleeve 152; a second bushing 160; a return spring 170; a seat frame 200; a base 210; a pedal 220; a support plate 221; a pedal 222; an armrest 230; a backrest 240; a control button 300; a display member 400; an installation case 500; a guard rail 600; a chassis 2000; a turntable 3000; a cantilever 4000; a case 4100; case lid 4200.

Detailed Description

It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.

The orientation or positional relationship in the description of the present application is the orientation or positional relationship when the seat and the construction vehicle are normally used. It is to be understood that such directional terms are merely for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present application.

Referring to fig. 1 to 6, in one aspect, the embodiment of the present invention provides a rotation limiting mechanism of a seat, where the rotation limiting mechanism 100 includes a rotating element 110, a supporting element 120, and an operating element 130. The supporting member 120 is pivotally connected to the rotating member 110. The supporting member 120 is formed with a plurality of first position-limiting keys 121. The plurality of first limit keys 121 are disposed at intervals along the rotation direction of the rotation member 110. The operating member 130 is pivotally connected to the rotating member 110. The operating member 130 is formed with a second limit key 131. The operating member 130 can rotate relative to the rotating member 110 to lock or unlock the second position-limiting key 131 and the first position-limiting key 121.

The operating element 130 is pivotally connected to the rotating element 110, that is, the operating element 130 can rotate relative to the rotating element 110. And since the operating element 130 is pivotally connected to the rotating element 110, and the rotating element 110 is pivotally connected to the supporting element 120, the rotating element 110 can drive the operating element 130 to rotate synchronously relative to the supporting element 120. When the second position-limiting key 131 is locked with the first position-limiting key 121, the operating element 130 is locked with the supporting element 120, and at this time, the operating element 130, the rotating element 110 and the supporting element 120 are locked, that is, the rotating element 110 cannot rotate relative to the supporting element 120. The plurality of first limiting keys 121 are disposed at intervals along the rotation direction of the rotation member 110, that is, along the rotation direction of the rotation member 110, the second limiting key 131 can be locked with different first limiting keys 121, so that the rotation member 110 can rotate at different angles, and the rotation member 110 can still be locked with the supporting member 120. When the second position-limiting key 131 and the first position-limiting key 121 need to be unlocked, a force is applied to the operating element 130, so that the operating element 130 rotates relative to the rotating element 110, the second position-limiting key 131 is separated from the first position-limiting key 121, and the rotating element 110 can rotate relative to the supporting element 120. The second position-limiting key 131 and the first position-limiting key 121 are locked or unlocked by the operating element 130, so that the rotating element 110 is controlled to rotate or stop relative to the supporting element 120, and the operation is simple and convenient.

In one embodiment, referring to fig. 1, 5 and 6, the supporting member 120 includes a supporting plate 122 and a pillar 123 connected to the supporting plate 122. The pillar 123 is formed with a mounting cavity 123a opened at both ends. A plurality of first position limiting keys 121 are formed on the supporting plate 122. The rotation limiting mechanism 100 includes a rotating shaft 140. One end of the rotation shaft 140 is connected to the rotation member 110. The other end of the rotation shaft 140 is detachably coupled to the support post 123 through the mounting cavity 123 a.

The supporting member 120 is pivotally connected to the rotating member 110 via the rotating shaft 140, so that the rotating member 110 is positioned and mounted on the supporting member 120 via the rotating shaft 140. The rotating member 110 can rotate relative to the supporting plate 122, a plurality of first limiting keys 121 are formed on the supporting plate 122, the rotating member 110 rotates by a certain angle, and the second limiting key 131 is locked with one of the first limiting keys 121. When the rotating member 110 needs to be rotated to another angle, a force is applied to the operating member 130, so that the operating member 130 rotates relative to the rotating member 110, the second limit key 131 is disengaged from the first limit key 121, the second limit key 131 is unlocked from the first limit key 121, the rotating member 110 is rotated to the another angle, the second limit key 131 is locked with the another first limit key 121, and the rotating member 110 is locked with the supporting plate 122. The other end of the rotating shaft 140 is detachably connected to the supporting post 123 through the mounting cavity 123a, so that the rotating member 110 and the rotating shaft 140 can be conveniently assembled and disassembled.

In one embodiment, referring to fig. 5 and 6, the rotation limiting mechanism 100 includes a first shaft sleeve 150. The first shaft sleeve 150 is sleeved on one end of the rotating shaft 140 close to the rotating member 110. The first bushing 150 includes a shoulder 151 and a sleeve 152 coupled to the shoulder 151. The shoulder 151 is located between the rotating member 110 and the support plate 122, and the sleeve 152 is located between the rotating shaft 140 and the support post 123. The friction between the rotating member 110 and the supporting plate 122 is reduced by the first bushing 150, and the gap between the rotating shaft 140 and the supporting column 123 is limited by the first bushing 150, so that the rotating shaft 140 is prevented from shaking.

In one embodiment, referring to fig. 5 and 6, the rotation limiting mechanism 100 includes a second bushing 160. The second shaft sleeve 160 is sleeved on an end of the rotating shaft 140 away from the rotating member 110. The second bushing 160 is located between the rotating shaft 140 and the pillar 123. The second bushing 160 defines a gap between the rotating shaft 140 and the pillar 123, so that the rotating shaft 140 is prevented from shaking.

In a specific embodiment, the first shaft sleeve 150 and the second shaft sleeve 160 are disposed at the same time, so as to facilitate quick installation and positioning of two ends of the rotating shaft 140, and avoid the rotating shaft 140 from shaking, and the first shaft sleeve 150 and the second shaft sleeve 160 can be disposed at an interval, that is, the volumes of the first shaft sleeve 150 and the second shaft sleeve 160 in the installation cavity 123a are reduced.

In one embodiment, referring to fig. 3 to 6, the rotating member 110 includes a rotating disc 111 and a limiting post 112 connected to the rotating disc 111. The support plate 122 is formed with a slide groove 122a extending in the rotation direction of the rotation member 110. The stopper post 112 can slide along the slide groove 122 a. The operating member 130 is pivotally connected to the turntable 111. When the second position-limiting key 131 is locked with one of the first position-limiting keys 121, the position-limiting column 112 is abutted against one end of the sliding groove 122 a. When the second position-limiting key 132 is locked with another first position-limiting key 131, the position-limiting column 112 is abutted against the other end of the sliding groove 122 a.

The operating member 130 is pivotally connected to the turntable 111. When the rotating disc 111 rotates to a certain angle, the limiting column 112 abuts against one end of the sliding groove 122a, that is, in the rotating direction, when the limiting column 112 abuts against one end of the sliding groove 122a, the rotating disc 111 rotates to the maximum angle, at this time, the second limiting key 131 is locked with one of the first limiting keys 121, and the rotating disc 111 is locked with the supporting disc 122. When the rotating disc 111 rotates in the opposite direction, the limiting column 112 slides along the sliding groove 122a until the limiting column 112 abuts against the other end of the sliding groove 122a, at this time, the rotating disc 111 rotates in the opposite direction to the maximum angle, at this time, the second limiting key 131 is locked with the other first limiting key 121, and the rotating disc 111 is locked with the supporting disc 122. That is, the maximum angle of forward rotation and the maximum angle of reverse rotation of the turntable 111 are restricted by the stopper posts 112 and the slide grooves 122 a. Thus, the groove walls of the limit post 112 and the sliding groove 122a abut against each other to limit the rotation of the turntable 111, and the force between the second limit key 131 and the first limit key 121 is reduced to enhance the structural stability of the rotation limiting mechanism 100. In addition, the user can determine the locking position of the second position-limiting key 131 and the first position-limiting key 121 only by the abutting between the position-limiting column 112 and the groove wall of the sliding groove 122 a.

Illustratively, the central angle of the sliding groove 122a is 180 °, that is, the maximum angle that the turntable 111 can rotate is 180 °. When the rotary disc 111 abuts against one end of the sliding groove 122a, the second limit key 131 is locked with another first limit key 121. When the rotating disc 111 needs to be rotated reversely by 180 degrees, a force is applied to the operating part 130, so that the operating part 130 rotates relative to the rotating disc 111, the second limit key 131 is separated from the first limit key 121, the second limit key 131 is unlocked from the first limit key 121, the user rotates the rotating disc 111 reversely, when the rotating disc 111 abuts against the other end of the sliding groove 122a, the rotating disc 111 cannot rotate, because when the rotating disc 111 cannot rotate, the second limit key 131 corresponds to another first limit key 121, at this time, the user can judge that the rotating disc 111 has rotated reversely by 180 degrees and the second limit key 131 corresponds to another first limit key 121 without checking whether the second limit key 131 corresponds to another first limit key 121 or not and only through the rotating disc 111 cannot rotate. Therefore, the operation is convenient for the user.

The central angle of the sliding groove 122a may be different angles such as 270 °, 250 °, 200 °, 150 °, 100 °, 90 °, 50 °, that is, the maximum angle at which the turntable 111 can rotate may be different angles such as 270 °, 250 °, 200 °, 150 °, 100 °, 90 °, 50 °, and the like, and the embodiment of the present application is not limited thereto.

It is understood that a plurality of first limit keys 121 may be provided between both ends of the sliding groove 122a, so as to facilitate the rotation of the rotation member 110 to different angles and to lock the rotation member 110.

In one embodiment, referring to fig. 5 and 6, the limiting post 112 is a bolt. The limit column 112 is screwed with the rotary disc 111. One end of the stopper post 112 is located in the slide groove 122 a. Thus, the limit posts 112 are convenient to assemble and disassemble.

In one embodiment, referring to fig. 2, 4 and 6, the supporting plate 122 includes an upper positioning plate 1221 and a lower positioning plate 1222 connected to the supporting posts 123, respectively. The slide groove 122a is formed on the upper positioning plate 1221, and the first limit key 121 is formed on the lower positioning plate 1222.

In one embodiment, referring to fig. 1-6, the support member 120 includes a flange 124. The flange 124 is connected to the end of the post 123 remote from the support plate 122. In this manner, the support 120 is easily assembled and disassembled.

In one embodiment, referring to fig. 1 and 2, the operating member 130 can rotate relative to the rotating member 110 in the rotating direction of the rotating member 110. Thus, the rotation direction of the operating member 130 is the same as the rotation direction of the rotating member 110, which not only facilitates the user to apply force to the operating member 130, but also reduces the space occupied by the rotation limiting mechanism 100 in the direction intersecting the rotating member 110. Illustratively, the rotation limiting mechanism 100 is used for the seat 1000, the seat 1000 rotates in the horizontal direction, that is, the rotating member 110 rotates in the horizontal direction, and the operating member 130 rotates in the horizontal direction relative to the rotating member 110. In this manner, the operating member 130 is prevented from moving in a direction intersecting the horizontal direction, for example, in the vertical direction, increasing the space occupied by the rotation limiting mechanism 100 in the vertical direction.

In one embodiment, referring to fig. 1 and 2, the rotation limiting mechanism 100 includes a return elastic member 170. One end of the return elastic member 170 is connected to the operating member 130. The other end of the return elastic member 170 is connected to the rotation member 110. The elastic restoring member 170 is elastically deformed to restore the operating member 130 quickly, so that the first position-limiting key 121 and the second position-limiting key 131 are more stable.

Specifically, the return elastic member 170 may be a spring. Further, the return elastic member 170 may be a tension spring. In some embodiments, the rotating member 110 is formed with a first connecting column, the first connecting column is formed with a first positioning groove extending along a circumferential direction of the first connecting column, further, the first positioning groove may be an annular groove, the operating member 130 is formed with a second connecting column, the second connecting column is formed with a second positioning groove extending along a circumferential direction of the second connecting column, further, the second positioning groove may be an annular groove, two ends of the restoring elastic member 170 are respectively bent to form a bent end, two ends of the restoring elastic member 170 are respectively located in the first positioning groove and the second positioning groove, so that one end of the restoring elastic member 170 is connected with the operating member 130, and the other end of the restoring elastic member 170 is connected with the rotating member 110.

In an embodiment, referring to fig. 1 to 6, the first position-limiting key 121 is adapted to the second position-limiting key 131. One of the first position-limiting key 121 and the second position-limiting key 131 is a hook, and the other of the first position-limiting key 121 and the second position-limiting key 131 is a locking groove. The first position-limiting key 121 and the second position-limiting key 131 are locked by the cooperation of the insertion hook and the locking groove. It should be noted that the first position-limiting key 121 may be an insertion hook, and the second position-limiting key 131 may be a locking groove. The second position-limiting key 131 may be a hook, and the first position-limiting key 121 may be a locking groove.

Referring to fig. 7 to 9, in another aspect, a seat 1000 according to an embodiment of the present disclosure includes a rotation limiting mechanism 100 and a seat frame 200 in any one of the embodiments described above. The seat frame 200 is connected to the rotation member 110, and the seat frame 200 can rotate in synchronization with the rotation member 110.

In one embodiment, referring to fig. 7, the seat frame 200 includes a base 210, a footrest 220, and an armrest 230. The base 210 is connected to the rotation member 110. The foothold 220 includes a support plate 221 having a rolled edge and a step plate 222 having a rolled edge, the support plate 221 is connected with the base 210, and the step plate 222 is connected with the support plate 221. Two armrests 230 are located on both sides of the base 210. One end of each armrest 230 is connected to the base 210, and the other end of each armrest 230 is connected to the foothold 220.

The user sits on the base 210 with his feet on the footrests 220 and two handrails 230 for placing his hands. Thus, the safety is improved conveniently. When the seat 1000 is used for the engineering vehicle, because the site work condition is complicated, especially when the seat 1000 is used for the fire engine, the seat 1000 sets up on the revolving stage 3000 of engineering vehicle 1, and the seat 1000 needs to rotate along with the revolving stage 3000, and the user exposes in the external environment, has the risk of falling, and the condition that no department was laid also exists in user's foot, and pedal 220 person of facilitating the use places the foot, and handrail 230 plays certain safety protection effect, avoids the user to fall.

Referring to fig. 7, the chair 1000 may also include a backrest 240. The backrest 240 is located on a side of the base 210 away from the foothold 220, and the backrest 240 is connected with the base 210. When a user sits on the base 210, the back of the user can lean against the backrest 240, which not only improves comfort, but also further improves safety.

Further, the base 210, the two armrests 230, and the backrest 240 are each formed of a hemmed plate member.

In one embodiment, referring to fig. 7-9, the chair 1000 includes at least one control button 300, a display 400, and a mounting box 500. The installation case 500 is coupled to the handle 230, and the installation case 500 is formed with a receiving cavity (not shown). The control buttons 300 are provided on the installation case 500. The display member 400 is coupled to the installation case 500. The receiving chamber is used to receive the control button 300 and the wiring harness of the display 400.

In one embodiment, referring to fig. 7-9, the chair 1000 includes a guardrail 600. The guard rail 600 is located at a side away from the base 210. The guard rail 600 is higher than the handrail 230. The guard rail 600 may be used to further protect the user.

Specifically, the guard rail 600 includes a rod having one end connected to the handle 230, a portion higher than the handle 230, and the other end connected to the foothold 220.

In one embodiment, referring to fig. 7, the free end of the operating member 130 is located between the base 210 and the footrest 220. Thus, the operation of the user is convenient. Illustratively, a user sitting on the base 210 can directly reach the free end of the operating member 130 to control the rotation of the operating member 130.

Referring to fig. 10, in another aspect, an engineering vehicle 1 is further provided, where the engineering vehicle includes a seat 1000, a chassis 2000, a turntable 3000, and a cantilever 4000 in any one of the embodiments. The turntable 3000 is pivotally connected to the chassis 2000. One end of the cantilever 4000 is connected to the turntable 3000. The other end of the cantilever 4000 is connected to the support 120. Set up seat 1000 on revolving stage 3000 through cantilever 4000, make full use of revolving stage 3000 upper portion's space makes engineering vehicle 1 structure compacter through rational utilization space.

In one embodiment, referring to fig. 9, a portion of the supporting member 120 is located in the cantilever 4000, so that the connection between the supporting member 120 and the cantilever 4000 is more stable. The support member 120 is detachably connected to the arm 4000, so that the seat 1000 can be easily detached from the arm 4000, and the seat 1000 can be easily mounted to the arm 4000.

In one embodiment, support 120 includes a support plate 122, a post 123 connected to support plate 122, and a flange 124. The flange 124 is connected to the end of the post 123 remote from the support plate 122. The post 123 is partially disposed within the cantilever 4000 and the flange 124 is removably connected to the cantilever 4000.

In one embodiment, referring to fig. 8 and 9, the cantilever 4000 includes a housing 4100 and a housing 4200. The case 4100 is open at an end facing away from the support 120, and the case lid 4200 is closed on the opening of the case 4100. The weight of the cantilever 4000 is facilitated to be reduced by the design of the case 4100 and the case lid 4200. The case 4100 and the case lid 4200 are detachably connected. Facilitating the loading and unloading of the housing 4100 and the case lid 4200. Portions of the support 120 are located within the housing 4100. The support 120 may be attached to the housing 4100 or the support 120 may be attached to the housing 4200, and then the housing 4100 and the housing 4200 may be attached.

In one embodiment, the post 123 defines a mounting cavity 123a that is open at both ends. The rotation limiting mechanism 100 includes a rotating shaft 140. The other end of the rotation shaft 140 is positioned in the mounting cavity 123a through an opening at one end of the mounting cavity 123 a. Portions of the support post 123 and portions of the shaft 140 are both located within the housing 4100. The rotation shaft 140 is detachably connected to the housing 4100.

The various embodiments/implementations provided herein may be combined with each other without contradiction. The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rotation limiting mechanism of a seat is characterized by comprising:

a rotating member;

2. The rotation limiting mechanism according to claim 1, wherein the support member comprises a support plate and a support pillar connected with the support plate, the support pillar is formed with a mounting cavity with two ends opened, and a plurality of first limiting keys are formed on the support plate;

3. The rotational limit mechanism of claim 2, wherein the rotational limit mechanism comprises a first bushing, the first bushing is sleeved on one end of the rotating shaft close to the rotating member, the first bushing comprises a shoulder and a sleeve connected with the shoulder, the shoulder is located between the rotating member and the support plate, and the sleeve is located between the rotating shaft and the support column;

4. The rotation limiting mechanism according to claim 2, wherein the rotating member includes a rotating disc and a limiting post connected to the rotating disc, a sliding groove extending along a rotation direction of the rotating member is formed on the supporting disc, the limiting post is capable of sliding along the sliding groove, and the operating member is pivotally connected to the rotating disc;

5. The rotary limiting mechanism according to claim 4, wherein the limiting column is a bolt, the limiting column is screwed with the rotary plate, and one end of the limiting column is located in the sliding groove;

6. The rotation-limiting mechanism of claim 2 wherein said support member comprises a flange connected to an end of said post remote from said support plate.

7. The rotation limiting mechanism according to any one of claims 1 to 6, wherein the operating member is rotatable relative to the rotating member in a rotational direction of the rotating member;

8. A seat, comprising:

the rotation limiting mechanism according to any one of claims 1 to 7; and

9. The seat of claim 8, wherein the seat frame comprises:

the base is connected with the rotating piece;

10. A work vehicle, characterized by comprising:

the seat of claim 8 or 9;

a chassis;

the rotary table is pivoted with the chassis; and