Vehicle-mounted flow measuring device for tail gas sampling pipeline

Abstract

The utility model discloses a vehicle-mounted flow measuring device for a tail gas sampling pipeline, relates to the technical field of tail gas flow measurement, and aims to solve the problem that a gap is formed between a connector and a measuring device due to the fact that the connector of the measuring device and the sampling pipeline is easily partially abraded. The tail gas measuring device comprises a flow measuring device arranged at the connecting end of a sampling pipeline body, a tail gas measuring device body, a mounting head and a sealing part, the sealing part comprises a fixing frame arranged on the outer side of the tail gas measuring device body, and two sets of reset sleeve plates are arranged in the fixing frame. Fixing rods are connected to the inner sides of the two sets of reset sleeve plates in a sliding and sleeved mode, cylindrical springs are arranged on the outer sides of the fixing rods in a sleeved mode, arc-shaped clamping plates are fixedly connected to the ends, away from the fixing frame, of the reset sleeve plates, and silica gel sealing rings are arranged on the inner side walls of the arc-shaped clamping plates. The conditions that the tail gas sample is lost and external air enters the device are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to tail gas flow measurement technical field, concretely is a kind of tail gas sampling pipeline vehicle-mounted flow measuring device. BACKGROUND

[0002] Tail gas sampling pipeline vehicle-mounted flow measuring device is a kind of equipment specially used for monitoring and controlling gas flow in automobile tail gas sampling process, the use range of this vehicle-mounted flow measuring device is extensive, covers environmental protection monitoring, vehicle research and development, laboratory research, vehicle maintenance and vehicle real-time monitoring and so on multiple fields, by using flow measuring device, tail gas emission can be effectively controlled, so tail gas sampling pipeline vehicle-mounted flow measuring device has the advantages of reducing tail gas pollution, improving air quality, improving measurement precision, supporting technical innovation, reducing maintenance cost, improving fuel efficiency and promoting sustainable development and so on, so it is indispensable device in promoting green development of automobile industry and environmental protection technology progress.

[0003] The existing flow measuring device needs to be connected and installed with tail gas sampling pipeline when being used, one end of tail gas sampling pipeline is communicated with automobile exhaust port, tail gas is discharged into the inside of device through tail gas sampling pipeline, generally when tail gas discharge flow is measured, multiple groups of tail gas samples need to be measured, so measuring device and sampling pipeline will be frequently disassembled and installed, the connecting head of measuring device and sampling pipeline is prone to partial abrasion, so the connecting head part can be slightly loosened by external collision and other factors, to cause gap between connecting head and measuring device, tail gas sample loss and external air entering measuring device inside, pollute detected tail gas sample, result analysis accuracy is reduced. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of tail gas sampling pipeline vehicle-mounted flow measuring device to solve the above background art that the connecting head of measuring device and sampling pipeline is prone to partial abrasion, so the connecting head part can be slightly loosened by external collision and other factors, to cause gap between connecting head and measuring device, tail gas sample loss and external air entering measuring device inside, pollute detected tail gas sample, result analysis accuracy is reduced.

[0005] In order to realize the above object, the utility model provides the following technical scheme: a kind of vehicle-mounted flow measuring device for tail gas sampling pipeline, the flow measuring device is used to set in the connecting end of sampling pipeline main body, including tail gas measuring device main body, mounting head and sealing part, the tail gas measuring device main body is arranged at one end of sampling pipeline main body, the mounting head is arranged between tail gas measuring device main body and sampling pipeline main body, the sealing part is arranged at the outside of mounting head, the sealing part includes the fixed frame that is arranged at the outside of tail gas measuring device main body, the inside of the fixed frame is provided with two groups of reset sleeve plate, the inside of two groups of reset sleeve plate is slidably connected with fixed rod, the outside of the fixed rod is equipped with cylindrical spring, the end of the reset sleeve plate away from fixed frame is fixedly connected with arc clamping plate, the inside wall of the arc clamping plate is provided with silica gel seal ring, the side of the arc clamping plate away from cylindrical spring is provided with two groups of fixed connecting plate, the inside of one group of fixed connecting plate is provided with limiting slot, the top surface of another group of fixed connecting plate is fixedly provided with connecting short rod, the top end of the connecting short rod is rotatably connected with rotating block, and the arc clamping plate is driven to be inserted into the inside of limiting slot by connecting short rod, to be used for the fixed limiting of arc clamping plate.

[0006] By adopting the above technical scheme, the connecting place of sampling pipeline main body and mounting head can be sealed.

[0007] Preferably, the top surface of one group of fixed connecting plate is provided with insertion hole, the insertion hole is arranged at the outside of limiting slot, the inside of rotating block is inserted with insertion rod, the bottom end of insertion rod extends to the inside of insertion hole and contacts with the inside wall of insertion hole.

[0008] By adopting the above technical scheme, the fixed measure can be taken to the rotating rotating block.

[0009] Preferably, the arc clamping plate is provided with two groups, and the two groups of arc clamping plates are oppositely distributed on the transverse central axis of mounting head, and the inside wall of silica gel seal ring is tightly attached to the outside wall of mounting head.

[0010] By adopting the above technical scheme, the accuracy of tail gas sample result analysis is improved.

[0011] Preferably, the outside wall of two groups of arc clamping plates is hinged with clamping connecting plate, the outside wall of sampling pipeline main body is fixedly connected with two groups of circular clamping blocks, and the two groups of circular clamping blocks are oppositely distributed on the transverse central axis of sampling pipeline main body, the top end of circular clamping block is inserted into the inside of clamping connecting plate, and the clamping connecting plate forms a plug-in structure.

[0012] By adopting the above technical scheme, the stability of the installation between sampling pipeline main body and mounting head can be improved.

[0013] Preferably, the adjusting and moving part is arranged outside the sealing part, and part of the adjusting and moving part is connected with the sealing part for adjusting the transverse position of the sealing part.

[0014] By adopting the technical scheme, the sampling pipeline main body and the mounting head are convenient to install and disassemble.

[0015] Preferably, the adjusting and moving part comprises a mounting block fixed on the outer wall of the tail gas measuring device main body, a support frame is fixedly connected to the side of the mounting block away from the tail gas measuring device main body, and a sliding support plate is arranged on the inner side wall of the support frame in a transverse manner.

[0016] By adopting the technical scheme, the sealing part is provided with support and sliding cooperation.

[0017] Preferably, a sliding sleeve block is sleeved on the outer side of the sliding support plate, and the sliding sleeve block is arranged on the outer side of the fixed frame and fixedly connected with the outer side wall of the fixed frame.

[0018] By adopting the technical scheme, when the sliding sleeve block is adjusted in the transverse position, the fixed frame is synchronously adjusted.

[0019] Compared with the prior art, the utility model has the advantages of:

[0020] (1) by pushing two groups of arc-shaped clamping plates to move close to each other, the silica gel sealing ring is inserted into the connecting portion of the sampling pipeline main body and the mounting head, and the connecting short rod and the rotating block are inserted into the inside of the limiting groove, then the rotating block is rotated until the limiting groove forms a cross state, and the fixed connecting plate and the arc-shaped clamping plate are limited, when the measuring sample needs to be replaced, the rotating block is rotated to the initial position, the elastic reset function of the cylindrical spring is utilized, the silica gel sealing ring and the arc-shaped clamping plate are removed from the installed state, thereby forming a multifunctional structure with sealing and reinforced connection, reducing the loss of tail gas samples and the entry of external air into the device, further reducing the pollution of external air to the tail gas sample, and improving the accuracy of the tail gas sample measurement result;

[0021] (2) by arranging the mounting block, the support frame, the sliding support plate, the sliding sleeve block, the circular clamping block and the clamping connecting plate, a transversely adjustable sealing part is formed, when the fixed state of the clamping connecting plate and the circular clamping block is removed, the transverse position of the sealing part can be adjusted again, the sampling pipeline main body and the mounting head are convenient to rotate and install, when the sealing part seals and fixes the connecting portion of the sampling pipeline main body and the mounting head, the transverse position of the sealing part can be fixed by inserting the circular clamping block into the inside of the clamping connecting plate, and the stability of the installation between the sampling pipeline main body and the tail gas measuring device main body is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1It is the side structure schematic view of the utility model;

[0023] Figure 2 It is the other side structure schematic view of the utility model;

[0024] Figure 3 It is the A place enlarged schematic view of the utility model;

[0025] Figure 4 It is the sealing portion installation state structure schematic view of the utility model;

[0026] Figure 5 It is the sealing portion dismounting state structure schematic view of the utility model;

[0027] Figure 6 It is the sealing portion partial section structure schematic view of the utility model;

[0028] Figure 7 It is the B place enlarged schematic view of the utility model.

[0029] In the drawing: 1, sampling pipeline main body;101, round clamping block;2, tail gas measuring device main body;3, installation head;4, sealing portion;401, fixed frame;402, fixed rod;403, reset sleeve plate;404, cylindrical spring;405, arc clamping plate;406, silica gel sealing ring;407, fixed connecting plate;408, connecting short rod;409, rotating block;410, limiting groove;411, insertion hole;412, insertion rod;413, clamping connecting plate;5, adjusting moving portion;501, installation block;502, support frame;503, sliding support plate;504, sliding sleeve block;6, exhaust pipe mouth. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the utility model.

[0031] The following will be combined with the drawings in the embodiments of the utility model Figures 1-7 The utility model will be further explained in detail.

[0032] Embodiment one

[0033] Please refer to Figures 1-7The embodiment provides a kind of tail gas sampling pipeline vehicle-mounted flow measuring device technical solutions: a kind of tail gas sampling pipeline vehicle-mounted flow measuring device, the flow measuring device is used to set in the connecting end of sampling pipeline main body 1, including tail gas measuring device main body 2, mounting head 3 and sealing part 4, flow measuring device is communicated with external power supply by power supply circuit, control panel and display screen are provided on the outer side wall of tail gas measuring device main body 2, tail gas measuring device main body 2 is communicated with control panel by data line, the tail gas measuring device main body 2 is set in one end of sampling pipeline main body 1, mounting head 3 is welded on the outer side wall of the tail gas measuring device main body 2, mounting head 3 and sampling pipeline main body 1 are rotatably installed by the setting of internal and external threads, so mounting head 3, tail gas measuring device main body 2 and sampling pipeline main body 1 are communicated with each other, while the end of sampling pipeline main body 1 away from mounting head 3 is installed to automobile exhaust, when automobile starts to discharge exhaust gas, sampling pipeline main body 1 will exhaust gas sample be discharged into the inside of tail gas measuring device main body 2 through mounting head 3, the discharge flow of this group of exhaust gas sample can be shown by display screen, the mounting head 3 is arranged between tail gas measuring device main body 2 and sampling pipeline main body 1, exhaust pipe mouth 6 is arranged at the top end of sampling pipeline main body 1, exhaust pipe mouth 6 is connected with the top end of sampling pipeline main body 1 by screw, and exhaust pipe mouth 6 and the inside of sampling pipeline main body 1 are communicated with each other, the gas measured is discharged from the inside of tail gas measuring device main body 2 through exhaust pipe mouth 6.

[0034] Example two

[0035] Please refer to Figures 1-7 The sealing part 4 is arranged at the outer side of mounting head 3, and the sealing part 4 includes a fixed frame 401 arranged at the outer side of the tail gas measuring device main body 2. The fixed frame 401 is arranged in a hollow structure, and the inside of the fixed frame 401 is convenient for mounting structures such as a reset sleeve plate 403, a fixed rod 402 and a cylindrical spring 404. Two groups of reset sleeve plates 403 are arranged in the inside of the fixed frame 401 and are oppositely distributed on the transverse central axis of the fixed frame 401. The inside of each reset sleeve plate 403 is slidably sleeved with a fixed rod 402. A sliding circular groove is formed in the inside of the reset sleeve plate 403. The fixed rod 402 longitudinally penetrates the inside of the sliding circular groove and extends to the outside of the reset sleeve plate 403. The top end of the fixed rod 402 is connected with the top surface in the inside of the fixed frame 401 by a screw. The bottom end of the fixed rod 402 is connected with the bottom surface in the inside of the fixed frame 401 by a screw. Therefore, the two groups of reset sleeve plates 403 can be adjusted and moved up and down at the outside of the fixed rod 402. A cylindrical spring 404 is sleeved at the outside of the fixed rod 402. Figure 7 And Figure 6The cylindrical spring 404 is shown in the minimum tension state when no external force is applied, and each group of reset sleeve plates 403 and the fixed frame 401 are provided with cylindrical springs 404, one end of the cylindrical spring 404 is welded with the inner side wall of the fixed frame 401, the other end of the cylindrical spring 404 is welded with the outer side wall of the reset sleeve plate 403, so when the arc-shaped clamp plate 405 is pushed to move downward for installation, the silica gel sealing ring 406 drives the reset sleeve plate 403 to move downward, at this time the cylindrical spring 404 is elongated and deformed, and the installation work between the two groups of fixed connecting plates 407 is matched, when the fixed state between the fixed connecting plates 407 is released, the cylindrical spring 404 is elastically reset and moves, at this time the reset sleeve plate 403 is driven to move towards the initial position by the reset force of the cylindrical spring 404, the arc-shaped clamp plate 405 and the silica gel sealing ring 406 are driven to release the sealing state of the sampling pipeline main body 1 and the tail gas measuring device main body 2, so as to facilitate the disassembly and installation between the tail gas measuring device main body 2 and the sampling pipeline main body 1.

[0036] The end of the reset sleeve plate 403 away from the fixed frame 401 is connected with arc-shaped clamping plates 405 through screws, the arc-shaped clamping plates 405 are provided with two groups and are arranged above and below the connection position of the sampling pipeline body 1 and the mounting head 3, the inner side wall of the arc-shaped clamping plate 405 is connected with silica gel sealing rings 406 through adhesive, when the two groups of arc-shaped clamping plates 405 are pushed to move close to each other, the silica gel sealing rings 406 can be inserted into the connection position of the mounting head 3 and the sampling pipeline body 1, the inner side wall of the silica gel sealing ring 406 is tightly attached to the outer side wall of the mounting head 3, the material properties of the silica gel sealing ring 406 are utilized, the sealing performance of the connection between the mounting head 3 and the sampling pipeline body 1 is improved, so that the overflow of the tail gas sample is reduced, the arc-shaped clamping plates 405 are provided with two groups, the two groups of arc-shaped clamping plates 405 are oppositely distributed on the transverse central axis of the mounting head 3, the side of the arc-shaped clamping plate 405 away from the cylindrical spring 404 is provided with two groups of fixed connecting plates 407, the arc-shaped clamping plate 405 is welded with the end of the cylindrical spring 404 away from the reset sleeve plate 403, the inside of one group of fixed connecting plates 407 is provided with a limiting groove 410, the group of fixed connecting plates 407 is arranged above the connecting short rod 408, the top surface of the other group of fixed connecting plates 407 is welded with a connecting short rod 408, the top end of the connecting short rod 408 is rotatably connected with a rotating block 409 through a bearing, the rotating block 409 rotates along the axis of the connecting short rod 408, the silica gel sealing ring 406 is pushed to drive the connecting short rod 408 to insert into the inside of the limiting groove 410 for fixing and limiting the arc-shaped clamping plate 405, when the two groups of arc-shaped clamping plates 405 are pushed to move close to each other, the two groups of fixed connecting plates 407 are driven to move close to each other, at this time, the connecting short rod 408 and the rotating block 409 insert into the inside of the limiting groove 410, until the rotating block 409 moves to the outside of the fixed connecting plate 407, the limiting measure of the fixed connecting plate 407 is completed by rotating the rotating block 409 transversely, the outer side wall of the two groups of arc-shaped clamping plates 405 is hinged with clamping connecting plates 413, the outer side wall of the sampling pipeline body 1 is connected with two groups of circular clamping blocks 101 through screws, the two groups of circular clamping blocks 101 are symmetrically distributed on the transverse central axis of the sampling pipeline body 1, the top end of the circular clamping block 101 is inserted into the inside of the clamping connecting plate 413 and forms a plug-in structure with the clamping connecting plate 413, the end of the clamping connecting plate 413 away from the arc-shaped clamping plate 405 is provided with a reinforcing slot matched with the circular clamping block 101, the end of the clamping connecting plate 413 away from the arc-shaped clamping plate 405 can move up and down, when the end of the clamping connecting plate 413 away from the arc-shaped clamping plate 405 is controlled to move downwards, the circular clamping block 101 can be inserted into the inside of the reinforcing slot, at this time, the connecting head of the sampling pipeline body 1 is fixed and limited, so that the stability of the sampling pipeline body 1 after installation is improved, the top surface of one group of fixed connecting plates 407 is provided with a insertion hole 411, the insertion hole 411 is arranged outside the limiting groove 410, the inside of the rotating block 409 is provided with an insertion rod 412, the bottom end of the insertion rod 412 extends to the inside of the insertion hole 411 and contacts with the inner side wall of the insertion hole 411,When the insertion rod 412 is sequentially inserted into the insertion hole 411 and the inside of the rotating block 409, the position of the rotating block 409 after rotation can be fixed, and when the insertion rod 412 is sequentially removed from the insertion hole 411 and the inside of the rotating block 409, the fixing measure of the rotating block 409 is released, facilitating re-rotation adjustment of the rotating block 409.

[0037] Embodiment three

[0038] Please refer to Figures 1-7 The adjusting moving part 5 is arranged outside the sealing part 4, part of the adjusting moving part 5 is connected with the sealing part 4 for adjusting the transverse position of the sealing part 4, the adjusting moving part 5 comprises a mounting block 501 connected with the outer wall of the tail gas measuring device body 2 by screws, the side away from the tail gas measuring device body 2 of the mounting block 501 is connected with a support frame 502 by screws, the inner wall of the support frame 502 is transversely connected with a sliding support plate 503 by screws, the outer side of the sliding support plate 503 is slidably sleeved with a sliding sleeve block 504, the sliding sleeve block 504 is arranged outside the fixed frame 401 and connected with the outer wall of the fixed frame 401 by screws, wherein the sliding sleeve block 504 is displaced on the sliding support plate 503, and when the sliding sleeve block 504 moves, the fixed frame 401 connected with the sliding sleeve block 504 by screws moves synchronously, specifically, when the sliding sleeve block 504 is pushed to adjust the transverse position, the fixed frame 401 is moved, and the fixed frame 401 moves to drive the reset sleeve plate 403 and the arc-shaped clamping plate 405 to move synchronously, so that when the arc-shaped clamping plate 405 is pushed away from the position above the mounting head 3, the sampling pipeline body 1 and the mounting head 3 can be conveniently connected and mounted, and when the arc-shaped clamping plate 405 is moved to the position above the mounting head 3, the connection between the sampling pipeline body 1 and the mounting head 3 can be reinforced and sealed.

[0039] Working principle: first, the tail gas measuring device body 2 and the sampling pipeline body 1 are taken out in sequence, one end of the sampling pipeline body 1 is aligned with the mounting head 3 for rotary installation, then the other end of the sampling pipeline body 1 is connected with the automobile exhaust port, the sliding sleeve block 504 is pushed transversely to adjust the position of the fixed frame 401 and the arc-shaped clamping plate 405, until the arc-shaped clamping plate 405 moves to the outside of the connection between the sampling pipeline body 1 and the mounting head 3;

[0040] Secondly, the arc-shaped clamping plates 405 are pushed to move close to each other, until the silica gel sealing ring 406 is inserted into the connection between the sampling pipeline body 1 and the mounting head 3 for sealing work, the arc-shaped clamping plates 405 drive the two groups of fixed connecting plates 407 to move close to each other, at this time the fixed connecting plates 407 drive the connecting short rods 408 and the rotating blocks 409 to be sequentially inserted into the inside of the limiting grooves 410, until the rotating blocks 409 move to the outside of the fixed connecting plates 407;

[0041] Finally, the rotating block 409 is limited to the fixed plate 407, the bottom of the plug rod 412 is aligned with the inside of the plug hole 411, the bottom of the plug rod 412 is inserted into the inside of the rotating block 409 and the plug hole 411 in turn, the fixing of the rotating block 409 is completed, then the detection switch of the tail gas measuring device main body 2 is opened, the inside of the sampling pipeline main body 1 is discharged into the tail gas, then the tail gas is discharged into the inside of the tail gas measuring device main body 2 through the sampling pipeline main body 1 and the installation head 3, the flow of the tail gas sample is collected through the display screen, then the collected tail gas is discharged from the exhaust pipe 6 to the inside of the tail gas measuring device main body 2, and finally the work is completed.

[0042] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A vehicle-mounted flow measurement device for an exhaust gas sampling pipeline, the flow measurement device being installed at the connection end of the sampling pipeline body, characterized in that, The flow measurement device includes: The exhaust gas measuring device body is located at one end of the sampling pipeline body; The mounting head is positioned between the main body of the exhaust gas measuring device and the main body of the sampling pipeline. A sealing part is provided on the outside of the mounting head. The sealing part includes a fixing frame provided on the outside of the exhaust gas measuring device body. Two sets of reset sleeves are provided inside the fixing frame. Both sets of reset sleeves are slidably fitted with fixing rods on their inner sides, and cylindrical springs are fitted on the outer sides of the fixing rods. An arc-shaped clamping plate is fixedly connected to the end of the reset sleeve away from the fixing frame, and a silicone sealing ring is provided on the inner side wall of the arc-shaped clamping plate. Two sets of fixed connecting plates are provided on the side of the arc-shaped clamp away from the cylindrical spring. One set of fixed connecting plates has a limit groove inside, and the other set of fixed connecting plates has a connecting short rod fixed on its top surface. The top of the connecting short rod is rotatably connected to a rotating block, which pushes the arc-shaped clamp to drive the connecting short rod into the interior of the limiting groove for fixing and limiting the arc-shaped clamp.

2. The vehicle-mounted flow measurement device for exhaust gas sampling pipeline according to claim 1, characterized in that: A set of fixed connecting plates has an insertion hole on its top surface. The insertion hole is located outside the limiting groove. An insertion rod is inserted into the inside of the rotating block. The bottom end of the insertion rod extends into the inside of the insertion hole and contacts the inner wall of the insertion hole.

3. The vehicle-mounted flow measurement device for exhaust gas sampling pipeline according to claim 2, characterized in that: Two sets of arc-shaped clamps are provided, and the two sets of arc-shaped clamps are distributed opposite each other on the transverse central axis of the mounting head. The inner sidewall of the silicone sealing ring is in close contact with the outer sidewall of the mounting head.

4. The vehicle-mounted flow measurement device for exhaust gas sampling pipeline according to claim 3, characterized in that: Both sets of arc-shaped clamps have hinged connecting plates on their outer side walls. Two sets of circular blocks are fixedly connected to the outer side wall of the sampling pipeline body. The two sets of circular blocks are distributed opposite each other on the transverse central axis of the sampling pipeline body. The top of the circular blocks is inserted into the interior of the connecting plate and forms an insertion structure with the connecting plate.

5. The vehicle-mounted flow measurement device for exhaust gas sampling pipeline according to claim 1, characterized in that, The flow measurement device also includes: An adjusting movable part is provided on the outside of the sealing part, and a portion of the adjusting movable part is connected to the sealing part for adjusting the lateral position of the sealing part; An exhaust port is located at the top of the sampling pipeline body and is fixedly connected to the top of the sampling pipeline body. The exhaust port is used to discharge the exhaust gas after the measurement is completed.

6. The vehicle-mounted flow measurement device for exhaust gas sampling pipeline according to claim 5, characterized in that: The adjusting and moving part includes a mounting block fixed on the outer wall of the exhaust gas measuring device body. A support frame is fixedly connected to the side of the mounting block away from the exhaust gas measuring device body. A sliding support plate is horizontally arranged on the inner wall of the support frame.

7. The vehicle-mounted flow measurement device for exhaust gas sampling pipeline according to claim 6, characterized in that: A sliding sleeve block is slidably sleeved on the outer side of the sliding support plate. The sliding sleeve block is located on the outer side of the fixed frame and is fixedly connected to the outer side wall of the fixed frame.

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