CN218893090U - Anti-falling ore transportation device for mining - Google Patents

Abstract

The utility model discloses an anti-drop ore transportation device for mining, which comprises a conveyor body, wherein the top surface of a conveying belt of the conveyor body is horizontal, the conveying direction of the conveying belt is transversely arranged, racks at two sides of the conveyor body are longitudinally and vertically arranged, side seats are transversely and vertically fixed between the racks at front and rear positions, and the side seats at the front and rear positions are not contacted with the edge parts of the conveying belt. The beneficial effects are that: according to the utility model, the baffle plates which are vertically arranged are fixedly arranged at the two sides of the conveying belt in a detachable manner in a manner of vertically sliding fit between the fit seat and the fit groove and longitudinally sliding fit between the limit rod and the limit hole, and the baffle plates are arranged at the sides of the conveying belt in a simple and easy-to-operate manner, so that the sides of the conveying belt are shielded by the arrangement of the baffle plates, mineral aggregate is prevented from scattering to the ground from the sides of the conveying belt in the conveying process, and smooth conveying of the mineral aggregate is ensured.

Description

Anti-falling ore transportation device for mining

Technical Field

The utility model relates to the field of ore exploitation auxiliary components, in particular to an anti-falling ore transportation device for mining.

Background

The transportation work is a part of the mining work, particularly in the mining process of molybdenum ore, a transportation device is needed to transport and convey the ore, the existing common transportation device is usually in a conveyor mode, the ore is conveyed forward to a centralized position at the front end through a conveying belt of the conveyor to be received, but the existing conveyor is particularly in the mineral material transportation process, as no shielding function is arranged at two sides of the conveying belt, the ore is easy to fall from two sides of the belt and fall to the ground when transported along with the conveying belt, the ore is wasted, and meanwhile, the scattered ore is inconvenient to operate when collected later.

Disclosure of Invention

The utility model aims to solve the problems and provide an anti-drop ore conveying device for mining, which is characterized in that baffle plates which are vertically arranged are detachably and fixedly arranged at two side positions of a conveying belt in a mode of vertically sliding fit between a fit seat and a fit groove and longitudinally sliding fit between a limit rod and a limit hole, the baffle plates are easy to operate in a mounting mode of the side parts of the conveying belt, the side parts of the conveying belt are shielded through the arrangement of the baffle plates, and mineral aggregate is prevented from scattering to the ground from the side parts of the conveying belt in the conveying process, and the utility model is described in detail below.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides an anti-drop ore transportation device for mining, which comprises a conveyor body, wherein the top surface of a conveying belt of the conveyor body is horizontal, the conveying direction of the conveying belt is transversely arranged, racks at two sides of the conveyor body are longitudinally and vertically arranged, side seats are transversely and vertically fixed between the racks at front and rear positions, and the side seats at the front and rear positions are not contacted with the edge parts of the conveying belt;

the outer terminal surface that the position was all installed a plurality of dismouting subassembly in each other was carried to the side seat around, conveyer belt's front and back limit portion periphery all is provided with the baffle along horizontal vertical, the dismouting subassembly is all fixed in corresponding the outer terminal surface of baffle, just the baffle all through corresponding the dismouting subassembly with the side seat can dismantle and be connected.

Preferably, a plurality of carrier rollers are connected between the side seats at the front and rear positions in a longitudinal rotating mode, and the carrier rollers are in fit contact with the bottom surface of the top of the conveying belt.

Preferably, the baffle plates are rectangular plates, and the bottom surfaces of the baffle plates are not higher than the top surfaces of the conveying belts.

Preferably, the number and the size of the baffles are not smaller than 30cm.

Preferably, inner end surfaces of the baffles in the front-rear positions, which are opposite to each other, are close to and do not contact with the edge portions of the conveyor belt.

Preferably, a feeding hopper is mounted between the baffles at the front and rear positions at one side of the baffles through a connecting rod, the top surface and one side bottom of the feeding hopper are both in an open arrangement, and the feeding hopper is suspended above the conveying belt.

Preferably, the detachable components at the front and back positions are two and symmetrically distributed.

Preferably, the dismounting assembly comprises a matching seat and a wing seat, the matching seats are inverted L-shaped seats, the end faces of the horizontal parts of the matching seats, which are close to each other, are all fixed on the corresponding outer end faces of the baffle, the bottoms of the vertical parts of the matching seats are all provided with limiting holes along the longitudinal direction, the wing seat and the matching seats are corresponding in number and are respectively horizontally fixed on the corresponding outer end faces of the baffle, the top surfaces of the wing seats are vertically fixed with fixing seats, matching grooves are vertically arranged on the fixing seats, the matching grooves are in one-to-one correspondence with the matching seats and are vertically in sliding fit, the outer end faces of the fixing seats, which are located at the front and the back, are respectively and vertically communicated with the corresponding matching grooves, the mounting holes are respectively and longitudinally coaxial with the corresponding limiting holes, the mounting holes are respectively and coaxially matched with the limiting rods along the longitudinal direction, the inner ends of the limiting rods, which are close to each other, are respectively and longitudinally matched with the corresponding limiting holes, the corresponding spring ends, and the corresponding spring ends, which are respectively extend out of the fixing seats, and the fixing seats are coaxially connected with the outer end faces of the fixing seats, and the fixing seats are respectively.

Preferably, the vertical part of the matching seat is a rectangular block, and the matching groove is a rectangular groove.

Preferably, the matching grooves are all through grooves in the vertical direction, and the bottom end surfaces of the matching seats are in fit contact with the top end surfaces of the corresponding wing seats.

By adopting the ore transportation device for anti-drop mining, particularly in the ore transportation process, as the matching seat of the baffle plate is vertically matched with the matching groove in a sliding manner in the initial process, and meanwhile, the limiting rod is longitudinally matched with the limiting hole in a sliding manner, the matching seat can not be locked by the matching limitation of the limiting rod and the limiting hole at the moment, so that the baffle plate is detachably fixed on the side seat, the two baffle plates are respectively positioned at two sides of the conveying belt, in the ore transportation process, the end part of the conveying belt can be blocked by the baffle plate, then mineral aggregate can be prevented from falling from the side part in the conveying process of the conveying belt, when the baffle plate is required to be detached, two persons simultaneously hold the handles corresponding to the baffle plate in an external pulling manner, enable the inner ends of the limiting rod to be separated from the corresponding limiting holes in a manner through the spring, keep the outer pulling of the handles, enable the bottom of the matched baffle plate to be detachably fixed on the side seat, the two sides of the baffle plate to be detached from the corresponding side seat, the two sides of the baffle plate are required to be detached from the corresponding to be detached from the two sides of the conveying belt respectively, when the two sides of the baffle plate are required to be detached from the corresponding sides of the conveying belt in a vertical pulling manner, and the two sides of the baffle plate are required to be detached from the two sides of the baffle plate by the vertical conveying belt simultaneously, and the two sides of the baffle plate can be detached from the corresponding sides by the handle simultaneously, and the two sides of the baffle plate can be detached from the end by the baffle plate by the end of the baffle plate in a vertical carrier when the vertical carrier is required to be detached from the end position, when the matching seat vertically slides downwards along the matching groove to the bottom end surface of the matching seat and is in contact with the top surface of the wing seat again, the limiting rod and the corresponding limiting hole are longitudinally and coaxially matched again, the handle is loosened, the spring immediately releases the stretching state to drive the limiting rod to be inserted into the corresponding limiting hole again, so that the resetting and fixing of the baffle at the corresponding side of the conveying belt are completed again, the other baffle is arranged at the other side of the conveying belt according to the mode, simultaneously, when the two baffles are installed, the end surfaces of the baffle, which are not provided with the matching seats, are in contrast with each other, when the feeding hopper is installed between the baffles, the baffles at the two side positions are installed together when the baffles are installed, so that the two baffles and the feeding hopper between the two baffles are reloaded together and fixed, the vertically arranged baffles are fixedly arranged at the two side positions of the conveying belt in a mode of vertically sliding matching the matching seats with the matching grooves and longitudinally sliding matching the limiting rods with the limiting holes, the installation mode of the baffles at the side parts of the conveying belt is simple and easy to operate, the side parts of the conveying belt can be shielded through the arrangement of the baffles, mineral aggregate is prevented from falling onto the ground from the side parts of the conveying belt in the conveying process, the device is beneficial to ensuring smooth conveying of mineral aggregate, and only the limit rod is pulled outwards to be separated from the limit hole, then the matching seat is vertically separated from the matching groove to detach the baffle from the edge of the conveying belt, and the baffle is easy to operate in a disassembling and assembling mode of the edge of the conveying belt, so that the baffle is convenient to disassemble and is smoothly overhauled and maintained on the conveying belt regularly.

The beneficial effects are that: 1. according to the utility model, the baffle plates which are vertically arranged are fixedly arranged at the two sides of the conveying belt in a detachable manner in a manner of vertically sliding fit between the fit seat and the fit groove and longitudinally sliding fit between the limit rod and the limit hole, and the baffle plates are simple and easy to operate in the installation manner of the side parts of the conveying belt, so that the side parts of the conveying belt are shielded through the arrangement of the baffle plates, mineral aggregate is prevented from scattering to the ground from the side parts of the conveying belt in the conveying process, and smooth conveying of the mineral aggregate is ensured;

2. the baffle can be detached from the edge of the conveying belt by pulling the limiting rod outwards to separate from the limiting hole, and then the matching seat can be separated from the matching groove vertically, so that the baffle can be detached from the edge of the conveying belt easily in a simple and easy-to-operate manner, and the baffle can be detached conveniently to carry out regular maintenance on the conveying belt smoothly.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic overall isometric view of the present utility model;

FIG. 2 is a schematic cross-sectional view of FIG. 1 in accordance with the present utility model;

FIG. 3 is an enlarged view of a portion of FIG. 2A in accordance with the present utility model;

FIG. 4 is a second schematic cross-sectional view of FIG. 1 in accordance with the present utility model;

FIG. 5 is an enlarged view of a portion of the utility model at B of FIG. 4;

FIG. 6 is a front exterior view of FIG. 1 of the present utility model;

FIG. 7 is a left side exterior view of FIG. 1 of the present utility model;

FIG. 8 is a right side exterior view of FIG. 1 of the present utility model;

FIG. 9 is a top exterior view of FIG. 1 of the present utility model;

fig. 10 is a bottom exterior view of fig. 1 of the present utility model.

The reference numerals are explained as follows:

1. a conveyor body; 101. a frame; 102. a conveyor belt; 103. a carrier roller; 104. a side seat; 2. a baffle; 3. a feed hopper; 301. a connecting rod; 4. disassembling and assembling the assembly; 401. a wing seat; 402. a fixing seat; 403. a spring; 404. a handle; 405. a mating seat; 406. a mating groove; 407. a limit rod; 408. a mounting hole; 409. and a limiting hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.

Referring to fig. 1-10, the utility model provides an anti-drop ore transportation device for mining, which comprises a conveyor body 1, wherein the top surface of a conveying belt 102 of the conveyor body 1 is horizontal, the conveying direction is transversely arranged, racks 101 at two sides of the conveyor body 1 are longitudinally and vertically arranged, side seats 104 are transversely and vertically fixed between the racks 101 at front and rear positions, and the side seats 104 at the front and rear positions are not contacted with the edge parts of the conveying belt 102.

The side seats 104 at the front and back positions are respectively provided with a plurality of dismounting assemblies 4 at the outer end surfaces opposite to each other, the peripheries of the front and back edge parts of the conveying belt 102 are respectively and vertically provided with baffle plates 2 along the transverse direction, the dismounting assemblies 4 are respectively and fixedly arranged at the outer end surfaces corresponding to the baffle plates 2, the baffle plates 2 are respectively and detachably connected with the side seats 104 through the corresponding dismounting assemblies 4, in particular, the dismounting assemblies 4 respectively comprise a matched seat 405 and wing seats 401, the matched seat 405 is an inverted L-shaped seat, the end surfaces of the horizontal parts of the matched seat 405 at the front and back positions, which are close to each other, are respectively and fixedly arranged at the outer end surfaces corresponding to the baffle plates 2, the bottoms of the vertical parts of the matched seat 405 at the front and back positions are respectively and vertically provided with limiting holes 409, the wing seats 401 are respectively and horizontally fixed at the outer end surfaces corresponding to the baffle plates 2, the top surfaces of the wing seats 401 are respectively and vertically fixedly provided with fixed seats 402, the fixed seats 402 are respectively and vertically provided with matched grooves 406, the matching grooves 406 and the matching seats 405 are in one-to-one correspondence and vertically sliding matching, the outer end surfaces of the fixed seats 402 at the front and rear positions are respectively provided with mounting holes 408 along the longitudinal direction, the mounting holes 408 are respectively and vertically communicated with the similar matching grooves 406, the mounting holes 408 are respectively and longitudinally coaxial with corresponding limiting holes 409, the mounting holes 408 are respectively and longitudinally coaxially sliding matched with limiting rods 407, the inner ends of the limiting rods 407 at the front and rear positions, which are close to each other, are respectively and longitudinally sliding matched with the corresponding limiting holes 409, the outer ends of the limiting rods 407 at the front and rear positions, which are far away from each other, extend out of the outer surfaces of the corresponding fixed seats 402 and are coaxially fixed with handles 404, the parts of the limiting rods 407 between the corresponding handles 404 and the outer end surfaces of the fixed seats 402 are respectively and coaxially clearance-matched with springs 403, the two ends of each spring 403 are respectively and fixedly connected with the corresponding handles 404 and the outer end surfaces of the fixed seats 402, baffle 2 in vertical arrangement is conveniently and fixedly arranged at two sides of conveying belt 102 in a mode of vertically sliding fit between the fit seat 405 and the fit groove 406 and longitudinally sliding fit between the limit rod 407 and the limit hole 409, and the baffle 2 can be detached from the side part of the conveying belt 102 by vertically separating the fit seat 405 from the fit groove 406 only by pulling the limit rod 407 outwards to separate from the limit hole 409.

As the scheme of the present preferred, all be connected with a plurality of bearing rollers 103 along vertical rotation between the side seat 104 of front and back position, and bearing roller 103 all contacts with the bottom surface laminating at conveyer belt 102 top, so set up, be convenient for carry the stability of ore in-process to reinforcing conveyer belt 102 through the setting of bearing roller 103, baffle 2 is the rectangular plate, and baffle 2's bottom surface all is not higher than conveyer belt 102's top surface, so set up, be convenient for ensure that baffle 2 can shelter from conveyer belt 102's limit portion minimum position.

The quantity size of baffle 2 is all not less than 30cm, so set up, the ore of great specification size can be restrained to the height of baffle 2 of being convenient for, makes it can not fall and spills the mineral aggregate, and the inner end face that baffle 2 in front and back position is relative each other all is close to the limit portion that corresponds conveyor belt 102 and contactless, and the perpendicular distance between preferential conveyor belt 102 and the baffle 2 is not greater than 5mm, so set up, be convenient for ensure to have less gap between baffle 2 and the conveyor belt 102 limit portion, can prevent consequently that the mineral aggregate from falling in the transportation and spill.

The baffle 2 of front and back position is installed the feeder hopper 3 through connecting rod 301 in the position of one of them side, and the top surface and the one side bottom of feeder hopper 3 are open setting, and feeder hopper 3 hangs in the top of conveyer belt 102, so set up, be convenient for let mineral aggregate transport on conveyer belt 102 through the mode that feeder hopper 3 guide falls to conveyer belt 102 through feeder hopper 3, the dismouting subassembly 4 of front and back position is two and symmetric distribution, so set up, be convenient for set up the fixed stability degree of two dismouting subassemblies 4 respectively through the both sides position and promote baffle 2.

The vertical part of cooperation seat 405 is the rectangular block, and cooperation groove 406 is rectangular groove, so sets up, and the cooperation seat 405 of being convenient for has good direction deviation rectification design when vertical slip cooperation with cooperation groove 406, and cooperation groove 406 is logical groove in vertical, and the bottom face of cooperation seat 405 all contacts with the top face laminating of corresponding wing seat 401, so sets up, is convenient for carry out obvious suggestion through the bottom face of cooperation seat 405 and the mode of the top face laminating contact of corresponding wing seat 401 when spacing hole 409 coaxial contrast of spacing lever 407 and correspondence.

With the above structure, particularly in the process of ore transportation, as the matching seat 405 of the baffle plate 2 is vertically and slidably matched with the matching groove 406 in the initial process, and meanwhile, the limiting rod 407 is longitudinally and slidably matched with the limiting hole 409, the matching seat 405 can not be locked to be vertically separated from the matching groove 406 by the matching limitation of the limiting rod 407 and the limiting hole 409, so that the baffle plate 2 is detachably fixed on the side seat 104 and the two baffle plates 2 are respectively positioned on two sides of the conveyor belt 102, in the process of specifically conveying ore, the end part of the conveyor belt 102 can be shielded by the baffle plate 2, so that ore can be prevented from falling from the side part in the process of conveying the conveyor belt 102, and when the baffle plate 2 is required to be detached afterwards, two people simultaneously hold the handles 404 corresponding to the same baffle plate 2 to be pulled outwards and the inner ends of the limiting rod 407 are separated from the corresponding limiting holes 409 by the mode of being stretched by the springs 403, when the hopper 3 is installed between the baffles 2, four people need to hold the four handles 404 to pull out and lift the baffles 2 at two sides and lift and remove the baffles 2 at two sides together with the hopper 3, and then when the baffles 2 need to be installed again, the baffles 2 are lifted up to enable the matching seats 405 of the baffles 2 and the matching grooves 406 corresponding to one side of the conveyor belt 102 to vertically slide downwards into the corresponding installation holes 408 after vertically contrasting with each other, and then two people pull out the handles 404 corresponding to the baffles 2 again and pull the inner ends of the limiting rods 407 into the corresponding installation holes 408 in a mode that the springs 403 are stretched, therefore, the bottom end of the limiting rod 407 is prevented from interfering to the matching seat 405 to slide vertically downwards along the matching groove 406, when the matching seat 405 slides vertically downwards along the matching groove 406 to the bottom end surface of the matching seat 405 to contact with the top surface of the wing seat 401 again, the limiting rod 407 is longitudinally and coaxially aligned with the corresponding limiting hole 409 again, the handle 404 is released, the spring 403 releases the stretching state immediately to drive the limiting rod 407 to be inserted into the corresponding limiting hole 409 again, so that the reinstallation and fixation of the baffle plate 2 at the corresponding edge of the conveying belt 102 are completed again, the other baffle plate 2 is installed at the other edge of the conveying belt 102 in the above manner, meanwhile, when the two baffle plates 2 are installed, the end surfaces of the two baffle plates 2, which are not installed with the matching seat 405, are in contrast with each other, when the feed hopper 3 is installed between the baffle plates 2, the baffle plates 2 at the two side positions should be installed together, the two baffles 2 and the feeding hopper 3 between the baffles 2 are reloaded and fixed together, thus the baffles 2 which are vertically arranged can be fixedly arranged at the two sides of the conveying belt 102 in a detachable and fixed way through the vertical sliding fit of the fit seat 405 and the fit groove 406 and the vertical sliding fit of the limit rod 407 and the limit hole 409, the installation mode of the baffles 2 at the side of the conveying belt 102 is simple and easy to operate, the side of the conveying belt 102 can be shielded through the arrangement of the baffles 2, mineral aggregate is prevented from scattering onto the ground from the side of the conveying belt 102 in the conveying process, the smooth conveying of mineral aggregate is ensured, the baffle 2 can be detached from the side of the conveying belt 102 only by pulling the limit rod 407 out of the limit hole 409, the baffle 2 is easy to operate in the disassembly mode of the side of the conveying belt 102, the baffle plate 2 is convenient to be removed, and the conveyor belt 102 is smoothly overhauled and maintained regularly.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides an ore transportation device is used in mining of anti falling, includes conveyer body (1), its characterized in that: the top surface of a conveying belt (102) of the conveyor body (1) is horizontal, the conveying direction is transversely arranged, frames (101) at two sides of the conveyor body (1) are longitudinally and vertically arranged, side seats (104) are transversely and vertically fixed between the frames (101) at the front and rear positions, and the side seats (104) at the front and rear positions are not contacted with the edge parts of the conveying belt (102);

the outer terminal surface that position around all installs a plurality of dismouting subassembly (4) in the outer terminal surface that is on the back of each other of side seat (104), the front and back limit portion periphery of conveyer belt (102) all is along horizontal vertical baffle (2) that is provided with, dismouting subassembly (4) all fix corresponding the outer terminal surface of baffle (2), just baffle (2) all through corresponding dismouting subassembly (4) with side seat (104) can dismantle and be connected.

2. The anti-drop mining ore transportation device according to claim 1, wherein: a plurality of carrier rollers (103) are connected between the side seats (104) at the front and rear positions in a longitudinal rotating mode, and the carrier rollers (103) are in fit contact with the bottom surface of the top of the conveying belt (102).

3. The anti-drop mining ore transportation device according to claim 1, wherein: the baffle plates (2) are rectangular plates, and the bottom surfaces of the baffle plates (2) are not higher than the top surfaces of the conveying belts (102).

4. A drop-resistant ore delivery device for mining according to claim 3, wherein: the number and the size of the baffles (2) are not smaller than 30cm.

5. The anti-drop mining ore transportation device according to claim 4, wherein: inner end surfaces of the baffle plates (2) at the front and rear positions, which are opposite to each other, are close to the edge parts corresponding to the conveying belt (102) and are not contacted.

6. The anti-drop mining ore transportation device according to claim 1, wherein: the feeding hopper (3) is arranged at one side of the baffle plates (2) at the front and rear positions through the connecting rod (301), the top surface and one side bottom of the feeding hopper (3) are both in open arrangement, and the feeding hopper (3) is suspended above the conveying belt (102).

7. The anti-drop mining ore transportation device according to claim 1, wherein: the front and rear positions of the dismounting assemblies (4) are symmetrically distributed.

8. An anti-drop mining ore delivery device according to any one of claims 1 to 7, wherein: the assembly and disassembly components (4) comprise a matching seat (405) and wing seats (401), the matching seats (405) are inverted L-shaped seats, the end faces of the horizontal parts of the matching seats (405) at the front and back positions are all fixed on the corresponding outer end faces of the baffle plates (2), the bottoms of the vertical parts of the matching seats (405) at the front and back positions are all provided with limiting holes (409) along the longitudinal direction, the number of the wing seats (401) and the matching seats (405) is corresponding to that of the corresponding baffle plates (2) and are respectively and horizontally fixed on the outer end faces of the baffle plates (2), the top surfaces of the wing seats (401) are vertically fixed with fixed seats (402), the fixed seats (402) are vertically provided with matching grooves (406), the end faces of the matching grooves (406) and the matching seats (405) at the front and back positions are vertically matched, the outer end faces of the fixed seats (402) at the front and back positions are respectively and longitudinally provided with mounting holes (408), the mounting holes (408) are respectively and vertically communicated with the corresponding matching grooves (406), the inner ends (408) are coaxially matched with the corresponding limiting holes (408) at the front and the corresponding positions (408) and the longitudinal positions (407) are respectively and the longitudinal positions (408) are matched with the longitudinal holes (407) at the front and the back positions (408) and the corresponding positions, the outer ends of the limiting rods (407) at the front and rear positions, which are far away from each other, extend out of the outer surfaces of the corresponding fixed seats (402) and are coaxially fixed with handles (404), springs (403) are coaxially and clearance-fitted at the positions of the limiting rods (407) between the corresponding handles (404) and the outer end surfaces of the fixed seats (402), and the two ends of each spring (403) are fixedly connected with the corresponding handles (404) and the outer end surfaces of the fixed seats (402) respectively.

9. The anti-drop mining ore transportation device of claim 8, wherein: the vertical part of the matching seat (405) is a rectangular block, and the matching groove (406) is a rectangular groove.

10. The anti-drop mining ore transportation device of claim 9, wherein: the matching grooves (406) are all through grooves in the vertical direction, and the bottom end surfaces of the matching seats (405) are in fit contact with the top end surfaces of the corresponding wing seats (401).

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