Mimicry drying device for textile drying treatment

Abstract

The invention provides a mimicry drying device for textile drying treatment, and relates to the technical field of textile drying, the mimicry drying device comprises a containing bin, two sets of side synchronizing shafts are rotationally arranged on the two sides of the containing bin; a front synchronizing shaft is rotationally arranged on the front side of the containing bin and is in transmission connection with bevel gears arranged on the two sets of side synchronizing shafts. A transmission motor is fixedly arranged at the front end of the containing bin and is in transmission connection with a bevel gear arranged on the front synchronizing shaft, an automatic mimicry structure is provided according to the driven gear and the control gear ring of each embodiment, the upper buckling frame and the lower buckling frame are moved up and down through a mechanical structure, textiles are continuously dried, and the drying efficiency is improved. Manual swinging is replaced through a mechanical structure, an additional power source does not need to be added, and the problem that an existing drying device lacks an automatic mimicry dewatering structure is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of textile drying, and particularly relates to a mimic drying device for textile drying treatment. Background Art

[0002] Textiles are products woven from textile fibers, roughly divided into knitted fabrics, woven fabrics, non-woven fabrics, natural fur fabrics, plastic fabrics, industrial fabrics, agricultural fabrics, and medical textiles, etc., which are widely used in people's daily production and life. If they are wet for a long time, they are prone to corrosion and need to be dried using a drying device.

[0003] However, the currently used drying devices mainly convey textiles through a conveying structure to a hot air blower for drying. The dehydration effect is limited, the drying efficiency of direct blowing is insufficient, and sometimes manual shaking is required for dehydration, lacking an automated mimic dehydration structure. Summary of the Invention

[0004] In view of this, the present invention provides a mimic drying device for textile drying treatment, which has an eccentric shaft that can drive two groups of conveying rollers to rotate and shake up and down, thereby driving the textiles to shake up and down, providing a mimic treatment function of water throwing and dehydration. During the up and down shaking of the conveying rollers, the eccentric seat conveys the textiles, and at the same time, the upper buckle and the lower buckle move up and down to continuously dry the textiles, realizing the replacement of manual shaking through a mechanical structure and without the need to add an additional power source.

[0005] The present invention provides a mimic drying device for textile drying treatment, specifically including: a receiving bin, on both sides of which two sets of side synchronous shafts are rotatably arranged; a front synchronous shaft is rotatably arranged on the front side of the receiving bin, and the front synchronous shaft is connected to the two sets of side synchronous shafts by bevel gear transmission; a driving motor is fixedly arranged at the front end of the receiving bin, and the driving motor is connected to the front synchronous shaft by bevel gear transmission; four sets of pneumatic telescopic rods A are fixedly arranged above both sides of the receiving bin; an upper support frame, the upper parts on both sides of which are fixedly arranged at the tops of the pneumatic telescopic rods A; the lower side contour of the upper support frame is aligned with the upper side contour of the receiving bin; four sets of conveying rollers are provided; eccentric seats are fixedly arranged on the outer sides of both ends of the conveying rollers, and eccentric shafts are fixedly arranged on the outer sides of the eccentric seats. The eccentric shafts are rotatably arranged inside the receiving bin and inside the upper support frame, and the upper and lower conveying rollers are in contact; a lower buckle is slidably arranged on the outer sides of the four lower eccentric shafts in cooperation with a chute; four sets of driven shafts are vertically rotatably arranged above the front and rear sides of the left and right sides of the receiving bin; four sets of rotating sleeves B are vertically rotatably arranged above the front and rear sides of the left and right sides of the upper support frame; an upper buckle is suspended in the middle of the upper support frame by a spring; two sets of transmission shafts B are rotatably arranged on both sides of the upper support frame; the transmission shafts B are connected to the side synchronous shafts by bevel gear transmission.

[0006] Optionally, the upper support frame includes: a middle frame, middle frames are fixedly arranged in the middle of the tops on both sides of the upper support frame, a transmission shaft A is rotatably arranged at the top of the middle frame, and the transmission shaft A is connected to the transmission shaft B by bevel gear transmission; rotating sleeves A are vertically rotatably arranged at the adjacent ends of the two sets of transmission shafts A; the transmission shaft A and the rotating sleeve A are connected by bevel gear transmission; four sets of pneumatic telescopic rods B are fixedly arranged on the inner walls on both sides of the upper support frame.

[0007] Optionally, the conveying roller further includes: driven gears, which are fixedly arranged on the outer parts of the shaft ends on both sides of the conveying roller.

[0008] Optionally, the driven shaft includes: a hexagonal shaft A, which is integrally arranged at the top of the driven shaft, and the hexagonal shaft A is slidably connected to the rotating sleeve B; the driven shaft is connected to the side synchronous shaft by bevel gear transmission; the lower eccentric shaft is connected to the driven shaft by bevel gear transmission; the upper eccentric shaft is connected to the rotating sleeve B by bevel gear transmission.

[0009] Optionally, the upper buckle includes: a fan part, two round holes are formed in the middle of the upper buckle, brackets are arranged in the round holes, a fan part is rotatably arranged below the brackets, and a hexagonal shaft B is fixedly arranged at the top of the rotating shaft of the fan part; the hexagonal shaft B is in transmission connection with the rotating sleeve A; a heater is arranged in the middle of the inside of the upper buckle.

[0010] Optionally, eight groups of control gear rings are fixedly arranged on the inner sides of the receiving bin and the upper support frame, and the centers of the control gear rings are aligned with the center of the eccentric shaft; the driven gear meshes with the control gear ring.

[0011] Optionally, conveying guide rollers are rotatably arranged on the front and rear side edges above the lower buckle frame and on the front and rear side edges below the upper buckle frame, and the upper and lower conveying guide rollers are in contact with each other.

[0012] Optionally, a lower control piston and an upper control piston are fixedly arranged on the left side of the receiving bin; spring locks are fixedly arranged at the telescopic ends of the lower control piston and the upper control piston, and a handle is arranged outside the spring locks; the internal volume of the lower control piston is greater than the sum of the volumes of the four air telescopic rods A, and the lower control piston is communicated with the four air telescopic rods A. When the lower control piston is in a contracted state, the four air telescopic rods A are in an extended state; the internal volume of the upper control piston is greater than the sum of the volumes of the four air telescopic rods B, and the upper control piston is communicated with the sum of the volumes of the four air telescopic rods B. When the upper control piston is in a contracted state, the four air telescopic rods B are in an extended state.

[0013] Optionally, two groups of limit control plates are fixedly arranged on the left side of the receiving bin, and vertical locking grooves are formed on the outer sides of the limit control plates. When the air telescopic rods A and the air telescopic rods B are in a fully contracted state or a fully extended state, the spring locks can be locked with the vertical locking grooves.

[0014] Beneficial effects The driven gear and the control gear ring according to the embodiments of the present invention provide an automated mimetic structure. The side synchronous shaft drives the driven shaft to rotate through the bevel gear, and then the driven shaft and the rotating sleeve B drive the upper and lower eccentric shafts to rotate through the bevel gear at the same time, driving the eccentric seat and the conveying roller to rotate. The driven gear cooperates with the control gear ring to rotate self, realizing mimetic dehydration. During the process of the up-and-down shaking of the conveying roller, the eccentric seat conveys the textile, and at the same time, the upper buckle frame and the lower buckle frame move up and down, continuously drying the textile, replacing manual shaking through a mechanical structure, and without the need to add an additional power source.

[0015] In addition, the settings of the lower control piston and the upper control piston provide a control function, and can synchronously control the positions of the upper buckle frame and the upper support frame. Contract the upper control piston, input air into the air telescopic rod B, fix the upper buckle frame through the air telescopic rod B, and then contract the lower control piston to input air into the air telescopic rod A, and use the air telescopic rod A to lift the upper support frame and the upper buckle frame, which provides convenience for conveying the textile fabric.

[0016] In addition, the setting of the fan component provides a drying function. The hexagonal shaft B can maintain the conveying function during the up-and-down movement of the upper buckle. Starting the drive motor drives the front synchronous shaft to rotate through bevel gears. The side synchronous shaft drives the drive shaft B to rotate through bevel gears. The drive shaft A drives the rotating sleeve A to rotate through bevel gears, driving the hexagonal shaft B to rotate, conveying air by using the fan component, and drying after being heated by the heater to achieve the heat treatment of textiles. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0018] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0019] In the drawings: Figure 1 A three-dimensional front view structural schematic diagram according to an embodiment of the present invention is shown; Figure 2 A three-dimensional rear view structural schematic diagram according to an embodiment of the present invention is shown; Figure 3 A front view structural schematic diagram according to an embodiment of the present invention is shown; Figure 4 A left side view structural schematic diagram according to an embodiment of the present invention is shown; Figure 5 A three-dimensional sectional structural schematic diagram according to an embodiment of the present invention is shown; Figure 6 A three-dimensional structural schematic diagram of a conveying roller according to an embodiment of the present invention is shown; Figure 7 A partial enlarged structural schematic diagram of A according to an embodiment of the present invention is shown; Figure 8 A partial enlarged structural schematic diagram of B according to an embodiment of the present invention is shown.

[0020] LIST OF REFERENCE NUMERALS 1, receiving bin; 101, side synchronous shaft; 102, front synchronous shaft; 103, drive motor; 2, air expansion rod A; 3, upper support frame; 301, intermediate frame; 302, drive shaft A; 303, rotating sleeve A; 304, air expansion rod B; 4, conveying roller; 401, eccentric seat; 402, eccentric shaft; 403, driven gear; 5, lower buckle; 6, driven shaft; 601, hexagonal shaft A; 7, rotating sleeve B; 8, upper buckle; 801, fan component; 802, hexagonal shaft B; 803, heater; 9, control gear ring; 10, conveying guide roller; 11, drive shaft B; 12, lower control piston; 13, upper control piston; 14, spring lock; 15, limit control plate; 1501, vertical lock groove. Detailed implementation mode

[0021] In order to make the objectives, solutions, and advantages of the technical solution of the present invention clearer, the following will clearly and completely describe the technical solution of the embodiments of the present invention in conjunction with the drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the ordinary meanings in the art. The same reference numerals in the drawings represent the same components.

[0022] Embodiment: Please refer to Figures 1 to 8 : The present invention provides a mimic drying device for textile drying treatment, including: a receiving bin 1, with two groups of side synchronous shafts 101 rotatably arranged on both sides of the receiving bin 1; a front synchronous shaft 102 rotatably arranged on the front side of the receiving bin 1, and the front synchronous shaft 102 is connected to the two groups of side synchronous shafts 101 by bevel gear transmission; a driving motor 103 fixedly arranged at the front end of the receiving bin 1, and the driving motor 103 is connected to the front synchronous shaft 102 by bevel gear transmission; four pneumatic telescopic rods A2, with the number of the pneumatic telescopic rods A2 set to four groups, and the four groups of pneumatic telescopic rods A2 are fixedly arranged above both sides of the receiving bin 1; an upper support frame 3, with the upper sides of both sides of the upper support frame 3 fixedly arranged at the tops of the pneumatic telescopic rods A2; the lower side contour of the upper support frame 3 is aligned with the upper side contour of the receiving bin 1; four conveying rollers 4, with the number of the conveying rollers 4 set to four groups; eccentric seats 401 are fixedly arranged on the outer sides of both ends of the conveying rollers 4, eccentric shafts 402 are fixedly arranged on the outer sides of the eccentric seats 401, and the eccentric shafts 402 are rotatably arranged inside the receiving bin 1 and inside the upper support frame 3, and the upper and lower conveying rollers 4 are in contact; a lower buckle 5, and the lower buckle 5 is slidably arranged outside the four lower eccentric shafts 402 in cooperation with a chute; four driven shafts 6, with the number of the driven shafts 6 set to four groups, and the four groups of driven shafts 6 are vertically rotatably arranged above the front and rear sides of the left and right sides of the receiving bin 1; four rotating sleeves B7, with the number of the rotating sleeves B7 set to four groups, and the four groups of rotating sleeves B7 are vertically rotatably arranged above the front and rear sides of the left and right sides of the upper support frame 3; an upper buckle 8, and the upper buckle 8 is suspended in the middle of the upper support frame 3 by a spring; two drive shafts B11, with the two drive shafts B11 rotatably arranged on both sides of the upper support frame 3; the drive shafts B11 are connected to the side synchronous shafts 101 by bevel gear transmission.

[0023] In addition, according to the embodiments of the present invention, refer to Figure 1 and Figure 8, the upper support frame 3 includes: an intermediate frame 301, which is fixedly arranged in the middle of the top sides of both sides of the upper support frame 3. A transmission shaft A302 is rotatably arranged on the top of the intermediate frame 301, and the transmission shaft A302 is connected to the transmission shaft B11 through bevel gear transmission; a rotating sleeve A303 is vertically rotatably arranged at the adjacent ends of the two groups of transmission shafts A302; the transmission shaft A302 and the rotating sleeve A303 are connected through bevel gear transmission; air telescopic rod B304, and four groups of air telescopic rods B304 are fixedly arranged on the inner walls of both sides of the upper support frame 3.

[0024] In addition, according to an embodiment of the present invention, refer to Figure 6 , the conveying roller 4 further includes: a driven gear 403, and driven gears 403 are fixedly arranged on the outer parts of the shaft ends on both sides of the conveying roller 4.

[0025] In addition, according to an embodiment of the present invention, refer to Figure 7 , the driven shaft 6 includes: a hexagonal shaft A601, a hexagonal shaft A601 is integrally arranged at the top of the driven shaft 6, and the hexagonal shaft A601 is slidably connected to the rotating sleeve B7; the driven shaft 6 and the side synchronous shaft 101 are connected through bevel gear transmission; the lower eccentric shaft 402 and the driven shaft 6 are connected through bevel gear transmission; the upper eccentric shaft 402 and the rotating sleeve B7 are connected through bevel gear transmission to provide a transmission effect.

[0026] In addition, according to an embodiment of the present invention, refer to Figure 5 , the upper buckle frame 8 includes: a fan part 801, two round holes are opened in the middle of the upper buckle frame 8, a bracket is arranged in the round holes, a fan part 801 is rotatably arranged below the bracket, and a hexagonal shaft B802 is fixedly arranged at the top of the rotating shaft of the fan part 801; the hexagonal shaft B802 is in transmission connection with the rotating sleeve A303; a heater 803, and a heater 803 is arranged in the middle of the inside of the upper buckle frame 8 to provide a heat drying effect.

[0027] In addition, according to an embodiment of the present invention, refer to Figure 6 , eight control gear rings 9 are fixedly arranged on the inner sides of the receiving bin 1 and the upper support frame 3, and the center of the control gear ring 9 is aligned with the center of the eccentric shaft 402; the driven gear 403 meshes with the control gear ring 9 to provide a driven transmission effect.

[0028] In addition, according to an embodiment of the present invention, refer to Figure 5 , conveying guide rollers 10 are rotatably arranged on the front and rear side edges above the lower buckle frame 5 and on the front and rear side edges below the upper buckle frame 8, and the upper and lower conveying guide rollers 10 are in contact with each other.

[0029] In addition, according to an embodiment of the present invention, refer to Figure 1, a lower control piston 12 and an upper control piston 13 are fixedly arranged on the left side of the receiving bin 1; telescopic ends of the lower control piston 12 and the upper control piston 13 are both fixedly provided with spring locks 14, and handles are arranged outside the spring locks 14; the internal volume of the lower control piston 12 is greater than the sum of the volumes of the four air telescopic rods A2, and the lower control piston 12 communicates with the four air telescopic rods A2. When the lower control piston 12 is in a contracted state, the four air telescopic rods A2 are in an extended state; the internal volume of the upper control piston 13 is greater than the sum of the volumes of the four air telescopic rods B304, and the upper control piston 13 communicates with the sum of the volumes of the four air telescopic rods B304. When the upper control piston 13 is in a contracted state, the four air telescopic rods B304 are in an extended state.

[0030] In addition, according to an embodiment of the present invention, with reference to Figure 1 , two limit control plates 15 are fixedly arranged on the left side of the receiving bin 1, and vertical lock grooves 1501 are formed on the outer sides of the limit control plates 15. When the air telescopic rods A2 and the air telescopic rods B304 are in a fully contracted state or a fully extended state, the spring locks 14 can be locked with the vertical lock grooves 1501.

[0031] Specific usage method and function of this embodiment: In the present invention, during use, first manually unlock the two spring locks 14. First, contract the upper control piston 13, input air into the air telescopic rod B304, fix the upper buckle 8 through the air telescopic rod B304, then contract the lower control piston 12 to input air into the air telescopic rod A2, expand the air telescopic rod A2, and at the same time use the air telescopic rod A2 to lift the upper support frame 3 and the upper buckle 8. Then, pass the textile fabric output from the washing machine through the middle of the upper and lower conveying rollers 4 and the conveying guide roller 10, and then reset the lower control piston 12 and the upper control piston 13, and make the conveying rollers 4 and the conveying guide roller 10 fit the textile fabric; Start the drive motor 103. The drive motor 103 drives the front synchronous shaft 102 to rotate through bevel gears. The front synchronous shaft 102 drives the side synchronous shaft 101 to rotate through bevel gears. The side synchronous shaft 101 drives the transmission shaft B11 to rotate through bevel gears. The transmission shaft B11 drives the transmission shaft A302 to rotate through bevel gears. The transmission shaft A302 drives the rotating sleeve A303 to rotate through bevel gears. The rotating sleeve A303 drives the hexagonal shaft B802 to rotate, and uses the fan member 801 to convey air, and dries after heating in cooperation with the heater 803; The side synchronous shaft 101 drives the driven shaft 6 to rotate through bevel gears. The driven shaft 6 drives the rotating sleeve B7 to rotate. The driven shaft 6 and the rotating sleeve B7 simultaneously drive the upper and lower eccentric shafts 402 to rotate through bevel gears. The eccentric shafts 402 drive the eccentric seats 401 and the conveying rollers 4 to rotate. At the same time, the driven gear 403 rotates in cooperation with the control gear ring 9. During the up and down shaking process of the conveying rollers 4, the eccentric seats 401 convey the textiles to achieve pseudo dehydration, and at the same time the upper buckle 8 and the lower buckle 5 move up and down to continuously dry the textiles.

[0032] Finally, it should be noted that when the present invention describes the positions of various components and their mating relationships, etc., usually one / a pair of components are taken as examples. However, those skilled in the art should understand that such positions, mating relationships, etc. equally apply to other components / other pairs of components.

[0033] The above description is only an exemplary embodiment of the present invention and is not intended to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A simulated drying device for drying textiles, characterized in that: include: A storage bin (1), wherein two groups of side synchronous shafts (101) are rotatably provided on both sides of the storage bin (1); a front synchronous shaft (102) is rotatably provided on the front side of the storage bin (1), and the front synchronous shaft (102) is connected to the two groups of side synchronous shafts (101) by bevel gear transmission; a transmission motor (103) is fixedly provided at the front end of the storage bin (1), and the transmission motor (103) is connected to the front synchronous shaft (102) by bevel gear transmission; a gas telescopic rod A (2), wherein the number of the gas telescopic rods A (2) is set to four groups, and the four groups of gas telescopic rods A (2) are fixedly provided on the upper sides of the storage bin (1); an upper support frame (3), wherein the upper sides of the upper support frame (3) are fixedly provided on the top of the gas telescopic rods A (2); the lower side profile of the upper support frame (3) is aligned with the upper side profile of the storage bin (1); a conveying roller (4), wherein the number of the conveying roller (4) is set to four groups; an eccentric seat (401) is fixedly provided on the outer sides of both ends of the conveying roller (4), and the eccentric seat (401) is fixedly provided on the outer sides of both ends of the conveying roller (4). An eccentric shaft (402) is fixedly arranged on the outer side of the seat (401), and the eccentric shaft (402) is rotatably arranged on the inner side of the receiving bin (1) and the inner side of the upper support frame (3), and the upper and lower conveying rollers (4) are fitted; a lower buckle frame (5), the lower buckle frame (5) is slidably arranged on the outer side of the four groups of eccentric shafts (402) below in cooperation with the slide groove; a driven shaft (6), the number of the driven shaft (6) is set to four groups, and the four groups of driven shafts (6) are vertically rotatably arranged on the left and right sides of the receiving bin (1). The upper front and rear sides of the upper support frame (3); a rotating sleeve B (7), the number of the rotating sleeves B (7) is set to four groups, and the four groups of rotating sleeves B (7) are vertically rotatably arranged on the upper front and rear sides of the left and right sides of the upper support frame (3); an upper buckle frame (8), the upper buckle frame (8) is suspended in the middle of the upper support frame (3) in cooperation with a spring; a transmission shaft B (11), two groups of transmission shafts B (11) are rotatably arranged on both sides of the upper support frame (3); the transmission shaft B (11) is connected to the side synchronization shaft (101) by a bevel gear transmission.

2. A simulated drying device for drying textiles as claimed in claim 1, characterized in that: The upper support frame (3) comprises: An intermediate frame (301), wherein the intermediate frames (301) are fixedly arranged in the middle of the top of both sides of the upper support frame (3), a transmission shaft A (302) is rotatably arranged on the top of the intermediate frame (301), and the transmission shaft A (302) and the transmission shaft B (11) are connected by bevel gear transmission; adjacent ends of the two sets of transmission shafts A (302) are vertically rotatably arranged with rotating sleeves A (303); the transmission shaft A (302) and the rotating sleeve A (303) are connected by bevel gear transmission; Gas telescopic rods B (304), four groups of gas telescopic rods B (304) are fixedly arranged on the inner walls on both sides of the upper support frame (3).

3. A simulated drying device for drying textiles as claimed in claim 1, characterized in that: Driven gears (403) are fixedly arranged on the outside of the shaft ends on both sides of the conveying roller (4).

4. A simulated drying device for drying textiles as claimed in claim 1, characterized in that: The driven shaft (6) comprises: A hexagonal shaft A (601) is integrally provided on the top of the driven shaft (6), and the hexagonal shaft A (601) is slidably connected to the rotating sleeve B (7); the driven shaft (6) and the side synchronous shaft (101) are connected by bevel gear transmission; the lower eccentric shaft (402) and the driven shaft (6) are connected by bevel gear transmission; and the upper eccentric shaft (402) and the rotating sleeve B (7) are connected by bevel gear transmission.

5. A simulated drying device for drying textiles as claimed in claim 1, characterized in that: The upper buckle frame (8) comprises: The fan member (801) has two groups of circular holes in the middle of the upper buckle frame (8), a bracket is arranged in the circular hole, the fan member (801) is rotatably arranged below the bracket, and a hexagonal shaft B (802) is fixedly arranged on the top of the rotating shaft of the fan member (801); the hexagonal shaft B (802) is drivingly connected to the rotating sleeve A (303); A heater (803) is provided in the middle of the upper buckle frame (8).

6. A simulated drying device for drying textiles as claimed in claim 1, characterized in that: Eight sets of control gear rings (9) are fixedly arranged on the inner sides of the receiving bin (1) and the upper support frame (3); the center of the control gear ring (9) is aligned with the center of the eccentric shaft (402); and the driven gear (403) is meshed with the control gear ring (9).

7. A simulated drying device for drying textiles as claimed in claim 1, characterized in that: Conveying guide rollers (10) are rotatably provided on the upper front and rear sides of the lower buckle frame (5) and the lower front and rear sides of the upper buckle frame (8), and the upper and lower conveying guide rollers (10) are in close contact with each other.

8. A simulated drying device for drying textiles as claimed in claim 1, characterized in that: A lower control piston (12) and an upper control piston (13) are fixedly provided on the left side of the receiving chamber (1); spring locks (14) are fixedly provided at the telescopic ends of the lower control piston (12) and the upper control piston (13), and a handle is provided outside the spring lock (14); the internal volume of the lower control piston (12) is greater than the sum of the volumes of the four groups of gas telescopic rods A (2), and the lower control piston (12) is connected to the four groups of gas telescopic rods A (2); when the lower control piston (12) is in a retracted state, the four groups of gas telescopic rods A (2) are in an extended state; the internal volume of the upper control piston (13) is greater than the sum of the volumes of the four groups of gas telescopic rods B (304), the upper control piston (13) is connected to the sum of the volumes of the four groups of gas telescopic rods B (304), and when the upper control piston (13) is in a retracted state, the four groups of gas telescopic rods B (304) are in an extended state.

9. A simulated drying device for drying textiles as claimed in claim 1, characterized in that: Two sets of limit control plates (15) are fixedly arranged on the left side of the receiving bin (1), and vertical locking grooves (1501) are provided on the outer sides of the limit control plates (15). When the gas telescopic rod A (2) and the gas telescopic rod B (304) are in a fully retracted state or a fully extended state, the spring lock (14) can be locked with the vertical locking grooves (1501).

Images