CN218927681U - Knuckle kingpin dismouting mechanism - Google Patents

Abstract

The embodiment of the utility model discloses a steering knuckle kingpin disassembly mechanism, comprising: a first support device, a second support device and a third support device; the first support device, the second support device and the The third support device is installed on the support seat, the second support device and the third support device are arranged symmetrically, the first support device, the second support device and the third support device are in the shape of a character It is provided that the first supporting device is used to support the brake disc of the steering wheel, and the second supporting device and the third supporting device are used to support the hub of the steering wheel. The steering knuckle kingpin dismounting mechanism composed of the first support device, the second support device and the third support device saves time and labor compared with the operation method of disassembling the steering knuckle kingpin after disassembling the wheel hub, and reduces the operation process. The disassembly and assembly of the kingpin of the steering knuckle can be completed only by a single operation, which improves the efficiency of disassembly and assembly of the kingpin of the steering knuckle.

Description

A steering knuckle king pin disassembly mechanism

technical field

The utility model relates to the technical field of automobile maintenance auxiliary equipment, in particular to a steering knuckle kingpin disassembly mechanism.

Background technique

In the periodical maintenance project of the new energy bus, the steering knuckle kingpin needs to be maintained. When the steering knuckle kingpin is maintained, the steering knuckle kingpin needs to be disassembled. The current method is to first disassemble the steering wheel hub, and then The disassembly of the steering knuckle kingpin can only be carried out after the brake hose, ABS sensor connection device, and friction plate alarm device connector are disassembled, and it requires the cooperation of multiple operators and a lot of man-hours to complete the disassembly of the steering knuckle kingpin.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a steering knuckle kingpin disassembly mechanism, which is used to solve the technical problem that many operators need to cooperate with each other and consume a lot of man-hours when the steering knuckle kingpin is disassembled.

The utility model is realized through the following technical solutions:

The utility model proposes a steering knuckle kingpin disassembly mechanism, comprising: a first support device, a second support device and a third support device; the first support device, the second support device and the third support device The devices are all installed on the support base, the second support device and the third support device are symmetrically arranged, the first support device, the second support device and the third support device are arranged in a character shape, and the The first supporting device is used to support the brake disc of the steering wheel, and the second supporting device and the third supporting device are used to support the hub of the steering wheel.

Further, the first support device includes: a first lifting member and a clamp; the lifting end of the first lifting member is fixedly connected to the clamp, and the clamp is used to clamp the steering wheel brake disc.

Further, the clamp includes: a clamp base, a clamping member and a fastener; the clamp base is fixedly connected to the first lifting member, the clamping member is rotatably connected to the clamp base, and the fastening The piece is rotatably connected with the clamping piece.

Further, the clamping member includes: a first clamping plate, a second clamping plate and a third clamping plate; the first clamping plate is rotatably connected to the clamp base, and the fastener is connected to the The second clamping plate is rotationally connected, the second clamping plate is vertically connected to one long edge of the first clamping plate, and the third clamping plate is connected to the other longitudinal edge of the first clamping plate The edges are vertically connected, and the first clamping plate, the second clamping plate and the third clamping plate together form a clamping groove.

Further, the fastener includes: a fastening button, a fastening bolt and a fixing plate; one end of the fastening bolt is fixedly connected to the fastening button, and the other end of the fastening bolt is movably connected to the fixing plate , the fastening bolt body is rotatably connected with the second clamping plate.

Further, the second support device includes: a second lifting piece and a first fixing piece; the first fixing piece is fixedly connected to the lifting end of the second lifting piece, and the first fixing piece is used to fix the steering wheel hub.

Further, the third supporting device includes: a third lifting piece and a second fixing piece; the second fixing piece is fixedly connected to the lifting end of the third lifting piece, and the second fixing piece is used to fix the The steering wheel hub.

Further, it is characterized in that the first supporting device, the second supporting device and the third supporting device are all slidably connected to the upper plate surface of the support base, and the upper plate surface of the support base is provided with a first sliding opening, a second sliding opening and a third sliding opening, the first supporting device slides on the first sliding opening, the second supporting device slides on the second sliding opening, the third supporting device slides on the The third sliding opening.

Further, at least two roller sets are installed on the lower surface of the support seat, and the roller sets are arranged symmetrically.

Further, a tool box is provided on the upper surface of the support base, the tool box is used to store maintenance tools, and a pull rod is provided near the outer edge of the support base, and the pull rod is rotatably connected with the support base.

Beneficial effects of the utility model:

The steering knuckle kingpin dismounting mechanism composed of the first support device, the second support device, the third support device and the support seat saves time and labor compared with the operation method that needs to disassemble the wheel hub and then disassemble the steering knuckle kingpin, and reduces the In the operation process, only one person can complete the disassembly and assembly of the king pin of the steering knuckle, which improves the efficiency of disassembly and assembly of the king pin of the steering knuckle. In addition, the first support device, the second support device and the third support device slide on the upper surface of the support seat, so that the steering knuckle king pin disassembly mechanism is suitable for different application scenarios.

The above description is only an overview of the technical solution of the utility model. In order to understand the technical means of the utility model more clearly, it can be implemented according to the contents of the specification, and in order to make the above and other purposes, features and advantages of the utility model more obvious and easy Understand, the preferred embodiment will be specifically cited below, and the detailed description is as follows.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of a steering knuckle kingpin dismounting mechanism;

Fig. 2 is a rear view structural schematic diagram of a steering knuckle kingpin dismounting mechanism;

Fig. 3 is a top view structure schematic diagram of a steering knuckle king pin disassembly mechanism:

Fig. 4 is a side view structural schematic diagram of a steering knuckle king pin dismounting mechanism;

Fig. 5 is a schematic diagram of an exploded structure of a steering knuckle king pin dismounting mechanism.

Reference signs in the figure:

The first supporting device 1, the first lifting member 11, the first adjusting member 111, the rocking part 1111, the connecting rod 1112, the fixing seat 1113, the clamp 12, the clamp base 121, the socket part 1211, the clamping part 122, the first clamp Holding plate 1221, second clamping plate 1222, third clamping plate 1223, clamping groove 1224, rotating shaft 1225, fastener 123, fastening button 1231, fastening bolt 1232, fixed plate 1233, sliding plate 13, the first Second supporting device 2, second lifting member 21, second adjusting member 211, first fixing member 22, first sliding part 23, first horizontal plate 231, first vertical plate 232, third supporting device 3, third lifting Part 31, third adjusting part 311, second fixing part 32, second sliding part 33, second horizontal plate 232, second vertical plate 233, support base 4, first sliding opening 41, sliding groove 411, second sliding The opening 42 , the third sliding opening 43 , the roller set 44 , the first roller 441 , the second roller 442 , the tool box 45 , and the pull rod 46 .

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present utility model.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", Orientation indicated by "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. The positional relationship is based on the orientation or positional relationship described in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation , so it cannot be interpreted as a limitation of the present utility model.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense, for example, they can be connected or detachable , or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "below" a second feature may include direct contact between the first and second features, and may also include the first and second features being in direct contact with each other. The features are not in direct contact but through another feature between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms should not be understood as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

Please refer to Fig. 1 to Fig. 5, the utility model proposes a steering knuckle kingpin disassembly mechanism, including: a first support device 1, a second support device 2 and a third support device 3; the first support device 1, the second support device The support device 2 and the third support device 3 are all installed in the same plane, the second support device 2 and the third support device 3 are symmetrically arranged, and the first support device 1, the second support device 2 and the third support device 3 are in the shape of a character Type setting, the first supporting device 1 is used to support the brake disc of the steering wheel, and the second supporting device 2 and the third supporting device 3 are used to support the hub of the steering wheel.

Place the steering knuckle kingpin removal mechanism consisting of the first support device 1, the second support device 2, and the third support device 3 at the bottom of the steering wheel where the steering knuckle kingpin needs to be disassembled, and lift the first support device 1 Lift the first supporting device 1 to support the steering wheel brake disc, lift the second supporting device 2 and the third supporting device 3 so that the second supporting device 2 and the third supporting device 3 support the steering wheel hub. After dismantling the brake hose, ABS sensor connection device, and friction plate alarm device connector, the steering knuckle kingpin is disassembled, which saves time and effort compared with the operation method of disassembling the steering knuckle kingpin after disassembling the wheel hub, and reduces The operation process is simplified, and only one person can complete the disassembly and assembly of the steering knuckle kingpin, which improves the efficiency of disassembly and assembly of the steering knuckle kingpin.

Please refer to FIG. 2 to FIG. 5 , the first support device 1 includes: a first lifting member 11 and a clamp 12 ; one end of the first lifting member 11 is fixedly connected to the clamp 12 , and the clamp 12 clamps the steering wheel brake disc. The first adjusting member 111 is installed on the first lifting member 11, and the first adjusting member 111 is used to adjust the lifting height of the first lifting member 11, so that the clamp 12 fixedly connected with the first lifting member 11 can clamp the steering wheel brake dish. The inside of the first adjusting part 111 is provided with a hydraulic oil circuit (not shown in the figure) connected to the first lift 11, and a one-way valve (not shown in the figure) is provided in the first adjusting part 111 to prevent the backflow of the hydraulic oil from causing The first lifting member 11 fails to work normally. The first adjusting member 111 includes: a rocking part 1111 , a connecting rod 1112 and a fixing seat 1113 , the rocking part 1111 is fixedly connected to one end of the connecting rod 1112 , and the other end of the connecting rod 1112 is flexibly connected to the fixing seat 1113 . After the worker uses the tool to connect with the rocking part 1111, a downward force is given to the tool to make the connecting rod 1112 move downward, so that the hydraulic oil in the hydraulic oil circuit (not shown in the figure) drives the first lifting member 11 to lift to The height at which the brake disc of the steering wheel can be clamped. The other end of the first lifting member 11 is fixedly connected to the surface of the sliding plate 13 , so that the first supporting device 1 slides on the first sliding opening 41 on the supporting base 4 .

In this embodiment, preferably, the first lifting member 11 is a hydraulic jack, and after the first supporting device 1 is slid to a designated position, the first adjusting member 111 installed on the first lifting member 11 enables the clamp 12 to reach Clamp the position of the steering wheel brake disc so that the steering wheel brake disc is supported by the first supporting device 1 . The first lifting member 11 is a hydraulic jack, which is easy to operate, and the first supporting device 1 can be operated by a single person to fix the steering wheel brake disc.

Referring to Fig. 3 to Fig. 5, the clamp 12 includes: a clamp base 121, a clamping member 122 and a fastener 123; the clamp base 121 is fixedly connected with the first lifting member 11, and an insertion part is provided on both sides of the clamp base 121 1211, the end of the clamping part 122 is provided with a rotating shaft 1225, and the rotating shaft 1225 is rotatably connected with the insertion part 1211, so that the clamping part 122 is rotatably connected with the clamp base 121, and the fastener 123 is rotatably connected with the clamping part 122.

When the first lifting member 11 lifts the clamp 12 until the clamp base 121 contacts the steering wheel brake disc, the clamping member 122 is rotated to clamp the steering wheel brake disc, and the fastener 123 is twisted to fix the steering wheel brake disc. on the clamping piece 122 . In order to facilitate the operation, the clamping part 122 and the clamping base 121 are detachable, and the clamping part 122 can be installed on the left side or the right side of the clamping base 121 according to actual needs. The steering wheel brake disc is clamped by the clamping part 122, and the steering wheel brake disc is fixed on the clamping part 122 by the fastener 123, so that the kingpin of the steering knuckle is easy to disassemble and assemble, and the man-hours required for replacing the kingpin of the steering knuckle are shortened.

Referring to FIGS. 3 to 5 , the clamping member 122 includes: a first clamping plate 1221, a second clamping plate 1222 and a third clamping plate 1223; a rotating shaft 1225 is provided at the end of the first clamping plate 1221, The rotating shaft 1225 is rotatably connected to the socket part 1211 on the clamp base 121, the fastener 123 is rotatably connected to the second clamping plate 1222, the second clamping plate 1222 is vertically connected to a long edge of the first clamping plate 1221, and the second The third clamping plate 1223 is vertically connected to the other longitudinal edge of the first clamping plate 1221 , and the first clamping plate 1221 , the second clamping plate 1222 and the third clamping plate 1223 together form a clamping groove 1224 . The clamping groove 1224 is used for clamping the steering wheel brake disc, and the fastener 123 fixes the steering wheel brake disc to the clamping groove 1224 .

Please refer to Fig. 3 to Fig. 5, fastener 123 comprises: fastening button 1231, fastening bolt 1232 and fixed plate 1233; One end of fastening bolt 1232 is fixedly connected with fastening button 1231, and the other end of fastening bolt 1232 is connected with fixed plate 1233 is movably connected, and the fastening bolt 1232 is rotatably connected with the second clamping plate 1222 . After the clamping part 122 clamps the steering wheel brake disc, the fixing plate 1233 is attached to the steering wheel brake disc, and the fastening button 1231 is twisted to fix the steering wheel brake disc on the clamping part 122 .

Please refer to Fig. 2 to Fig. 5, the second supporting device 2 comprises: the second elevating member 21 and the first fixing member 22; It is fixedly connected with the first sliding part 23, so that the second supporting device 2 can slide in the second sliding opening 42, and the second adjusting part 211 is arranged on the second lifting part 21, and the second adjusting part 211 adjusts the second lifting part 21 The height of the lift, the first fixing member 22 fixes the steering wheel hub. The first sliding part 23 includes: a first horizontal plate 231 and a first vertical plate 232, the surface of the first horizontal plate 231 is attached to the lower surface of the support seat 4, and one end of the first vertical plate 232 is connected to the surface of the first horizontal plate 231. Fixedly connected, the other end of the first vertical plate 232 is fixedly connected to the bottom end of the second lifting member 21 , and the body of the first vertical plate 232 slides in the second sliding opening 42 .

Because the size of the steering wheel hub is different, the second lifting member 21 is placed on the bottom of the steering wheel hub through the first sliding part 23, and the second lifting member 21 is lifted to a position where the first fixing member 22 can be connected with the steering wheel hub. The second adjusting member 211 fixes the lifting height of the second elevating member 21 , and the first fixing member 22 is connected with the hub of the steering wheel through bolts, so that the hub of the steering wheel is fixed on the second supporting device 2 . The second supporting device 2 composed of the second lifting member 21, the first fixing member 22, the second adjusting member 211 and the first sliding part 23 is easy to operate, and the second supporting device 2 can be operated by a single person to complete the steering wheel hub. fixed.

Please refer to Fig. 2 to Fig. 5, the 3rd supporting device 3 comprises: the 3rd lifting part 31 and the 2nd fixing part 32; It is fixedly connected with the second sliding part 33, so that the third supporting device 3 can slide in the third sliding opening 43, and the third adjusting part 311 is provided on the third lifting part 31, and the third adjusting part 311 adjusts the third lifting part 31 The height of lifting, the second fixing member 32 fixes the steering wheel hub. The second sliding part 33 includes: a second horizontal plate 331 and a second vertical plate 332, the surface of the second horizontal plate 331 is attached to the lower surface of the support seat 4, and one end of the second vertical plate 332 is connected to the surface of the second horizontal plate 331. Fixedly connected, the other end of the second vertical plate 332 is fixedly connected with the bottom end of the third lifting member 31 , and the second vertical plate 332 slides in the third sliding opening 43 .

Since the size of the hub of the steering wheel is different, and the second supporting device 2 cannot completely fix the hub of the steering wheel, the third supporting device 3 and the second supporting device 2 need to cooperate with each other. The third lifting member 31 is placed on the bottom of the steering wheel hub through the second sliding part 33, and the third lifting member 31 is lifted to a position where the second fixing member 32 can be connected with the steering wheel hub, and the third adjusting member 311 will lift the third lifting member 31 to the bottom of the steering wheel hub. The lifting height of the part 31 is fixed, and the second fixing part 32 is connected with the hub of the steering wheel through bolts, so that the hub of the steering wheel is fixed on the third supporting device 3 . The third supporting device 3 composed of the third lifting member 31, the second fixing member 32, the third adjusting member 311 and the second sliding part 33 is easy to operate, and the third supporting device 3 can be operated by a single person to complete the steering wheel hub. fixed. Through the second support device 2 and the third support device 3, the steering wheel hub is fixed on the steering knuckle kingpin dismounting mechanism, so that the steering knuckle kingpin is easy to disassemble, and shortens the man-hours required for the maintenance of the steering wheel kingpin of the automobile.

Please refer to Fig. 2 to Fig. 5, the first support device 1, the second support device 2 and the third support device 3 are all slidably connected to the upper surface of the support base 4, and the upper surface of the support base 4 is provided with a first sliding opening 41 , the second sliding opening 42 and the third sliding opening 43, the first supporting device 1 slides in the first sliding opening 41, the second supporting device 2 slides in the second sliding opening 42, the third supporting device 3 slides in the third sliding opening 43. Both sides of the first sliding opening 41 are provided with sliding grooves 411, and the sliding grooves 411 on both sides are arranged symmetrically. bottom of the dish.

Due to the different sizes of the hubs, the positions of the steering wheel brake discs are different. In order to facilitate the maintenance of the kingpin of the steering shaft, a first sliding opening 41, a second sliding opening 42 and a third sliding opening are provided on the upper surface of the support base 4. 43. The first supporting device 1 slides in the first sliding opening 41, the second supporting device 2 slides in the second sliding opening 42, and the third supporting device 3 slides in the third sliding opening 43. When using the steering knuckle kingpin disassembly mechanism Only need to move the first supporting device 1, the second supporting device 2, and the third supporting device 3 to the designated positions.

Referring to Fig. 4 to Fig. 5, at least two roller sets 44 are installed on the lower surface of the support base 4, and the roller sets 44 are arranged symmetrically. In this application, the roller sets 44 consist of a first roller 441 and a second roller 442. By arranging the roller group 44, the steering knuckle king pin dismounting mechanism is convenient to move. A tool box 45 is provided on the upper surface of the support base 4, and the tool box 45 is used to store maintenance tools, which is convenient for taking of tools when the steering knuckle kingpin is maintained. The support seat 4 is also provided with a pull bar 46 near the outer edge, and the pull bar 46 is rotationally connected with the support seat 4. The pull bar 46 is used to promote the support seat 4 to move. When the support seat 4 is moved to a designated position by the pull bar 46, the pull bar 46 can be placed on the ground.

The steering knuckle kingpin disassembly mechanism composed of the first support device 1, the second support device 2, the third support device 3 and the support seat 4 saves time compared with the operation method that needs to disassemble the hub and then disassemble the steering knuckle kingpin It saves labor and reduces the operation process. Only one person can complete the disassembly and assembly of the kingpin of the steering knuckle, which improves the efficiency of disassembly and assembly of the kingpin of the steering knuckle. And the first support device 1 , the second support device 2 and the third support device 3 slide on the upper surface of the support base 4 , so that the steering knuckle king pin disassembly mechanism is suitable for different application scenarios.

The above is only a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any person familiar with the technical field can easily think of various Equivalent modifications or replacements shall all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (10)

1. A knuckle kingpin removal and attachment mechanism, comprising: the first support device, the second support device and the third support device; the first supporting device, the second supporting device and the third supporting device are all installed on the supporting seat, the second supporting device and the third supporting device are symmetrically arranged, the first supporting device, the second supporting device and the third supporting device are arranged in a delta shape, the first supporting device is used for supporting a steering wheel brake disc, and the second supporting device and the third supporting device are used for supporting a steering wheel hub.

2. The knuckle kingpin removal and attachment mechanism of claim 1, wherein said first support means comprises: a first lifting member and a clamp; the lifting end of the first lifting piece is fixedly connected with the clamp, and the clamp is used for clamping the steering wheel brake disc.

3. The knuckle kingpin removal and attachment mechanism of claim 2, wherein said clamp comprises: the clamping device comprises a clamp base, a clamping piece and a fastening piece; the fixture base is fixedly connected with the first lifting piece, the clamping piece is rotationally connected with the fixture base, and the fastener is rotationally connected with the clamping piece.

4. A knuckle king pin removal mechanism according to claim 3, wherein said clamp comprises: the first clamping plate, the second clamping plate and the third clamping plate; the first clamping plate is rotationally connected with the clamp base, the fastener is rotationally connected with the second clamping plate, the second clamping plate is vertically connected with one long-direction edge of the first clamping plate, the third clamping plate is vertically connected with the other long-direction edge of the first clamping plate, and the first clamping plate, the second clamping plate and the third clamping plate jointly encircle to form a clamping groove.

5. The kingpin assembly and disassembly mechanism of claim 4, wherein said fastener comprises: fastening button, fastening bolt and fixing plate; one end of the fastening bolt is fixedly connected with the fastening button, the other end of the fastening bolt is movably connected with the fixing plate, and the fastening bolt body is rotatably connected with the second clamping plate.

6. The knuckle kingpin removal and attachment mechanism of claim 1, wherein said second support means comprises: the second lifting piece and the first fixing piece; the first fixing piece is fixedly connected with the lifting end of the second lifting piece, and the first fixing piece is used for fixing the steering wheel hub.

7. The knuckle kingpin removal and attachment mechanism of claim 1, wherein said third support means comprises: a third lifting member and a second fixing member; the second fixing piece is fixedly connected with the lifting end of the third lifting piece, and the second fixing piece is used for fixing the steering wheel hub.

8. The knuckle king pin removal and attachment mechanism of any one of claims 1 to 7, wherein said first support means, said second support means, and said third support means are slidably connected to said upper plate surface of said support base, said upper plate surface of said support base is provided with a first sliding opening, a second sliding opening, and a third sliding opening, said first support means is slidably disposed in said first sliding opening, said second support means is slidably disposed in said second sliding opening, and said third support means is slidably disposed in said third sliding opening.

9. The knuckle master pin removal and installation mechanism of claim 8, wherein the lower plate surface of said support base is provided with at least two roller sets, said roller sets being symmetrically disposed.

10. The steering knuckle king pin disassembly and assembly mechanism of claim 1, wherein a tool box is arranged on the upper plate surface of the supporting seat and used for storing maintenance tools, and a pull rod is further arranged on the supporting seat near the outer side edge and is in rotary connection with the supporting seat.

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