CN114343201A - Processing belt cleaning device for quick-freeze vegetables - Google Patents

Abstract

The invention discloses a cleaning device for processing quick-frozen vegetables, which relates to the technical field of vegetable cleaning equipment and solves the problem that the vegetable cleaning equipment needs a larger space due to longer length.

Description

Processing belt cleaning device for quick-freeze vegetables

Technical Field

The invention relates to the technical field of vegetable cleaning equipment, in particular to a cleaning device for processing quick-frozen vegetables.

Background

The vegetable quick-freezing is to adopt high-quality vegetables for blanching, the vegetables can be fished up when the vegetables are turned to dark green, the vegetables are placed in cold water for cooling, the cooled vegetables are placed in a centrifugal machine for spin-drying, then the vegetables are frozen, the vegetables are quickly frozen for about 45 minutes in a cold air environment with the temperature of minus 33 ℃ to minus 40 ℃ (different vegetable quick-freezing time is different), then the vegetables enter cold water, thin ice is formed on the surface, and oxidation can be prevented.

At present, before vegetables quick-freeze, need wash and float and scald it, generally all directly place and wash for the first time in the basin, transmit to the transmission area through rivers again on, spray through external water and carry out the secondary to the realization is to the washing of vegetables, but can lead to holistic equipment size longer like this, occupy great space, for this reason, we propose a processing belt cleaning device for quick-freeze vegetables.

Disclosure of Invention

The invention aims to provide a cleaning device for processing quick-frozen vegetables, which can reduce the occupied space for cleaning the vegetables and solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a processing belt cleaning device for quick-freeze vegetables, is including wasing the case, it is the rectangle framework to wash the case, just it is fixed with the division board to wash the incasement, and pass through the division board will wash the case and separate into two cell bodies, the crisscross a plurality of baffles that are fixed with of equidistance in two cell bodies, and the crisscross a plurality of wiper mechanism that are used for vegetables abluent of installing of equidistance in two cell bodies.

Preferably, wiper mechanism includes the axis of rotation, the axis of rotation both ends respectively with wash the incasement wall with the division board rotates to be connected, the axis of rotation outside is fixed with the rotation post, just the angle such as rotation post outside is opened has a plurality of mounting grooves, it corresponds a plurality ofly to rotate the post outside mounting groove position department all is fixed with the L template, and is a plurality of all install in the mounting groove and empty the piece, it corresponds to wash the incasement outside the axis of rotation position department installs drive assembly, through clean subassembly, can salvage vegetables from the water, realizes stirring to vegetables for clean efficiency is higher.

Preferably, drive assembly is including fixing the drive cover in the axis of rotation outside, it corresponds to wash the incasement side the axis of rotation position department opens there are two installing ports opposite to the orientation, and two the installing port internal fixation has the driving piece, it is fixed with the mounting bracket to wash the incasement side to rotate through the mounting bracket and install and stretch into runner in the drive cover, drive cover inboard wait the angular fixation have a plurality of ratchets, just a plurality of pawls are installed to runner outside equidistance, the runner outside is fixed with the regulating plate, just it has the sliding opening to open in the regulating plate, and the slip is pegged graft in the sliding opening has and is stretched into the intraoral regulation pole of installing realizes regularly deciding the rotation of angle to the axis of rotation through drive assembly, realizes making vegetables salvage in the cell body.

Preferably, the driving part comprises a bidirectional screw rod, a fixing frame is fixed at the position of the outer side of the cleaning box corresponding to the mounting port, the fixing frame is rotationally connected with one end of the bidirectional screw rod, a connecting rod is fixed at the bottom end of the bidirectional screw rod and penetrates through the bottom of the mounting opening in a sliding manner, and extends into the next mounting opening, a driving motor is fixed in the mounting opening positioned below, the output end of the driving motor is fixed with the bottom of the connecting rod through a coupler, the outer side of the connecting rod is sleeved with an installation platform in a sliding manner, the outer side of the mounting table is fixed with the adjusting rod, the outer side of the bidirectional screw rod is in threaded sleeve connection with a moving table, and an L-shaped frame is installed on the outer side of the mobile station, a linkage part is installed between the mobile station and the installation table, and the driving part provides power to drive the mobile station to move.

Preferably, the linkage piece is including fixing a plurality of gangbars on the mount table, and is a plurality of the gangbar slides and runs through the installing port to stretch into above in the installing port, and is a plurality of the gangbar top is fixed with the cover and is in the support ring in the two-way lead screw outside, and is a plurality of the gangbar outside cover have with the installing port inner wall with support the extrusion spring that the ring offseted, when realizing that the moving platform moves down through the linkage piece, can move down the mount table in the linkage, under the unstressed condition simultaneously, can drive mount table automatic re-setting.

Preferably, the dumping member comprises a rotating shaft fixed at the outer end of the mounting groove, a dumping plate is sleeved outside the rotating shaft, and the outer side of the rotating shaft is sleeved with a torsion spring fixed with the bottom end of the dumping plate, the bottom of the dumping plate is provided with a receiving groove, and a telescopic plate is inserted in the containing groove in a sliding manner, the bottom of the outer end of the telescopic plate is provided with a clamping groove, the outer end of the L-shaped frame is fixed with a clamping strip matched with the clamping groove, the other end of the telescopic plate is fixed with two insertion rods inserted with the inner wall of the containing groove, and the outer side of the inserted bar is sleeved with a tension spring which is fixed with the inner wall of the containing groove and the inner end of the expansion plate, the partition plate is provided with an inclined plate for dumping vegetables, the vegetables that salvage on the L template can be emptyd another pond through empting the piece in, wash again through the wiper mechanism in another pond for clean efficiency is higher.

Preferably, wash the case outside and correspond baffle position department installs through the motor frame and rotates the motor, just it is fixed with the connecting axle through the shaft coupling to rotate the motor output, the connecting axle rotates to be inserted in wasing the incasement, and with the division board rotates the butt joint, and the connecting axle outside is fixed with the rotation wheel, rotates the motor drive through rotating and changes the wheel to make the output can flow to the L template fast in, make clean convenient more quick.

Preferably, the drive sleeve outside corresponds a plurality of L template position department all opens flutedly, just it has the prism pole to slide in the mounting bracket to peg graft, prism pole top be fixed with the arch of recess looks adaptation, just prism pole outside cover has spacing spring, through the protruding and the mutual joint of recess of design for at every turn rotate the back, can carry out spacingly to the drive sleeve, make and rotate more stably.

Compared with the prior art, the invention has the beneficial effects that:

according to the vegetable cleaning device, the cleaning box is divided into two parts, the cleaning mechanisms are arranged in the two tank bodies in an equidistant and crossed manner, vegetables are cleaned through the cleaning mechanisms and conveyed to the next-wall tank body, so that the vegetables can be conveyed for many times in the two tank bodies during cleaning, the requirement for cleaning the vegetables is met, and meanwhile, the space required by cleaning is greatly reduced.

Drawings

FIG. 1 is a schematic view of the whole structure of the cleaning tank of the present invention after partially cut;

FIG. 2 is a schematic view of another angle structure of the whole cleaning tank after being partially cut away;

FIG. 3 is a partial cross-sectional structural schematic view of the present invention;

FIG. 4 is a schematic view of the cleaning mechanism of the present invention in relation to the position of the divider plate;

FIG. 5 is a schematic view of the cleaning mechanism of the present invention;

FIG. 6 is a front view of the cleaning tank and cleaning mechanism of the present invention;

FIG. 7 is an enlarged view taken at A in FIG. 6;

FIG. 8 is a schematic view of a partial structure of a cleaning mechanism according to the present invention;

FIG. 9 is a schematic view of a driving assembly according to the present invention;

FIG. 10 is an enlarged view of FIG. 9 at B;

fig. 11 is a schematic view of the pouring member of the present invention.

In the figure: 1-cleaning the tank; 2-a partition plate; 3-a baffle plate; 4-a cleaning mechanism; 5-a rotating shaft; 6-rotating the column; 7-mounting grooves; 8-L-shaped plates; 9-a pouring member; 10-a drive assembly; 11-a driving sleeve; 12-a mounting opening; 13-a drive member; 14-a mounting frame; 15-a rotating wheel; 16-a ratchet; 17-a pawl; 18-an adjusting plate; 19-adjusting the rod; 20-a bidirectional screw rod; 21-a fixing frame; 22-a connecting rod; 23-a mounting table; 24-a mobile station; a 25-L-shaped frame; 26-a linkage; 27-a linkage bar; 28-a retaining ring; 29-compression spring; 30-a rotating shaft; 31-tipping the plate; 32-a receiving groove; 33-a retractable plate; 34-a plunger; 35-a tension spring; 36-a sloping plate; 37-a rotating motor; 38-a connecting shaft; 39-a running wheel; 40-grooves; 41-prismatic rod; 42-projection; 43-a limit spring; 44-driving the motor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1-5, a cleaning device for processing quick-frozen vegetables shown in the figures includes a cleaning box 1, the cleaning box 1 is a rectangular frame, a partition plate 2 is fixed in the cleaning box 1, the cleaning box 1 is divided into two tank bodies by the partition plate 2, a plurality of baffles 3 are fixed in the two tank bodies in an equidistant and staggered manner, and a plurality of cleaning mechanisms 4 for cleaning vegetables are installed in the two tank bodies in an equidistant and staggered manner.

It should be noted that: in this scheme, wash case 1 and be a rectangle framework, inside injection water source, the water source is mobile water source, and division board 2 will wash case 1 and fall into two cell bodies simultaneously, and a plurality of baffles 3 fall into a plurality of intervals with the cell body, and the water between a plurality of intervals circulates each other, and vegetables are crisscross in a plurality of intervals of follow two cell bodies in proper order and wash the outflow, very big reduction occupation of land space.

In the present embodiment, please refer to fig. 5-7, a cleaning mechanism 4 in the figure includes a rotating shaft 5, two ends of the rotating shaft 5 are respectively rotatably connected to the outer wall of a cleaning box 1 and a partition plate 2, a rotating column 6 is fixed on the outer side of the rotating shaft 5, a plurality of mounting slots 7 are formed on the outer side of the rotating column 6 at equal angles, L-shaped plates 8 are fixed on the outer side of the rotating column 6 corresponding to the plurality of mounting slots 7, dumping members 9 are installed in the plurality of mounting slots 7, and a driving assembly 10 is installed on the outer side of the cleaning box 1 corresponding to the rotating shaft 5;

it should be noted that, through the designed rotating column 6 and the plurality of L-shaped plates 8 on the outer side, the vegetables in the cleaning box 1 are salvaged, so that the vegetables are salvaged on the L-shaped plates 8 and are dumped into the partitioned basin body through the dumping piece 9.

Referring to fig. 6-10, the driving assembly 10 shown in the figure includes a driving sleeve 11 fixed outside the rotating shaft 5, two mounting ports 12 with opposite directions are opened at positions corresponding to the rotating shaft 5 outside the cleaning tank 1, driving members 13 are fixed in the two mounting ports 12, an installation frame 14 is fixed outside the cleaning tank 1, a rotating wheel 15 extending into the driving sleeve 11 is rotatably installed through the installation frame 14, a plurality of ratchets 16 are fixed at equal angles inside the driving sleeve 11, a plurality of pawls 17 are installed at equal intervals outside the rotating wheel 15, an adjusting plate 18 is fixed outside the rotating wheel 15, a sliding opening is formed in the adjusting plate 18, and an adjusting rod 19 extending into the mounting port 12 is inserted in the sliding opening in a sliding manner.

It should be noted that the driving member 13 provides power to drive the adjusting rod 19 to move at a fixed angle, so that the adjusting plate 18 moves downward at an equal angle, and the rotating column 6 and the L-shaped plate 8 are driven to rotate, thereby realizing the fishing of vegetables.

It is worth noting that: due to the mutual matching of the plurality of ratchets 16 and the pawls 17, the adjusting plate 18 can drive the rotating column 6 to rotate when moving downwards, and the rotating column 6 does not rotate when the adjusting plate 18 moves upwards and resets, so that the rotating column 6 rotates unidirectionally.

In addition, referring to fig. 8-10, the driving member 13 in the figure includes a bidirectional screw rod 20, a fixing frame 21 is fixed at a position corresponding to the mounting port 12 on the outer side of the cleaning tank 1, the fixing frame 21 is rotatably connected with one end of the bidirectional screw rod 20, a connecting rod 22 is fixed at the bottom end of the bidirectional screw rod 20, the connecting rod 22 slidably penetrates through the bottom of the mounting port 12 and extends into the next mounting port 12, a driving motor 44 is fixed in the mounting port 12 located at the bottom, the output end of the driving motor 44 is fixed with the bottom of the connecting rod 22 through a coupling, a mounting table 23 is slidably sleeved on the outer side of the connecting rod 22, the outer side of the mounting table 23 is fixed with the adjusting rod 19, a moving table 24 is threadedly sleeved on the outer side of the bidirectional screw rod 20, an L-shaped frame 25 is mounted on the outer side of the moving table 24, and a linkage member 26 is mounted between the moving table 24 and the mounting table 23;

it should be noted that: the driving motor 44 provides power to drive the connecting rod 22 and the bidirectional screw rod 20 to synchronously rotate, so that the mobile platform 24 moves up and down on the bidirectional screw rod 20, the dumping piece 9 can be driven to dump vegetables when the mobile platform 24 moves up, and the linkage piece 26 can be extruded when the mobile platform 24 moves down, so that the mounting platform 23 moves down, and the downward movement adjustment of the adjusting plate 18 is realized.

It is worth noting that: in the scheme, the type Y80M1-2 is preferably selected as the driving motor 44, a power supply interface of the motor is connected with a power supply system through a switch, a motor operation circuit is a normal and reverse rotation control program of a conventional motor, the circuit operates as the conventional circuit, circuits and control related in the scheme are the prior art, and redundant description is not repeated herein.

Referring to fig. 7-9, the linkage member 26 shown in the figure includes a plurality of linkage rods 27 fixed on the mounting platform 23, the linkage rods 27 slidably penetrate through the mounting opening 12 and extend into the mounting opening 12, the top of the linkage rods 27 is fixed with a support ring 28 sleeved on the outer side of the bidirectional screw rod 20, and the outer side of the linkage rods 27 is sleeved with an extrusion spring 29 abutting against the inner wall of the mounting opening 12 and the support ring 28.

It should be noted that: by the designed linkage rod 27, the mounting table 23 can be driven to synchronously move downwards when the moving table 24 moves downwards, and the mounting table 23 can move upwards to the limit position by pressing the spring 29 when the moving table 24 moves upwards.

In addition, referring to fig. 11, the tilting member 9 in the figure includes a rotating shaft 30 fixed at the outer end of the mounting groove 7, a tilting plate 31 is sleeved outside the rotating shaft 30, a torsion spring fixed to the bottom end of the tilting plate 31 is sleeved outside the rotating shaft 30, a storage groove 32 is formed at the bottom of the tilting plate 31, a telescopic plate 33 is inserted into the storage groove 32 in a sliding manner, a clamping groove is formed at the bottom of the outer end of the telescopic plate 33, a clamping strip matched with the clamping groove is fixed to the outer end of the L-shaped frame 25, two insertion rods 34 inserted into the inner wall of the storage groove 32 are fixed to the other end of the telescopic plate 33, a tension spring 35 fixed to the inner wall of the storage groove 32 and the inner end of the telescopic plate 33 is sleeved outside the insertion rods 34, and an inclined plate 36 for vegetable tilting is formed on the partition plate 2.

It should be noted that: after the rotation of angles such as rotating post 6, through shifting up of mobile station 24, thereby drive the draw-in groove butt joint in card strip and the expansion plate 33 in the L type frame 25, and drive expansion plate 33 and empty the board 31 and incline, make and empty the vegetables in the L template 8, thereby empty in next door's cell body, make vegetables trade a cell body and continue to wash, after L type frame 25 moves down, through the torsion spring interact in extension spring 35 and the pivot 30, make expansion plate 33 and empty the board 31 and reset.

It is worth noting that: the width of the pouring plate 31 is small, and all the vegetables on the L-shaped plate 8 cannot be poured at one time, so that multiple operations are required

The principle of efficiently cleaning vegetables and saving space; firstly, a person pours vegetables into one of the tanks, the vegetables are brought into the L-shaped plates 8 by the rotation of the nearest rotating column 6, and the vegetables are poured into the next-door tank body through the pouring piece 9 at the highest point, so that the vegetables meet the requirement of first cleaning, and the vegetables are stirred in the next-door tank body and then poured into the next-door tank body, so that the vegetables are salvaged, transported and cleaned for multiple times after being transported through the whole cleaning box 1, namely the vegetables are cleaned by moving the S-shaped line, and the space occupation is greatly reduced while the vegetables are cleaned at high efficiency;

it is worth noting that: when salvaging and transferring to next door cell body to vegetables at every turn, can both once get rid of tiny vegetable bits such as remaining impurity in the vegetables washing for wash cleaner.

Example 2

Referring to fig. 1-3, in this embodiment, for further description of embodiment 1, a rotating motor 37 is installed at a position corresponding to the baffle 3 outside the cleaning box 1 through a motor frame, an output end of the rotating motor 37 is fixed with a connecting shaft 38 through a coupler, the connecting shaft 38 is rotatably inserted into the cleaning box 1 and is rotatably abutted with the partition plate 2, and a rotating wheel 39 is fixed outside the connecting shaft 38.

It is worth noting that: the rotating motor 37 rotates to control the rotating wheel 39 to rotate, so that water flow in the tank body is driven, and vegetables can easily flow into the L-shaped plate 8.

In addition, in the scheme, the type Y80M2-2 is preferably selected for the rotating motor 37, the power supply interface of the motor is connected with the power supply system through a switch, the motor operation circuit is a normal and reverse rotation control program of a conventional motor, the circuit operates as the conventional circuit, the circuits and the control related in the scheme are the prior art, and redundant description is not repeated herein.

Example 3

Referring to fig. 9 and 10, in the present embodiment, for further explanation of other embodiments, the positions of the outer side of the driving sleeve 11 corresponding to the plurality of L-shaped plates 8 are all provided with grooves 40, prismatic rods 41 are inserted into the mounting rack 14 in a sliding manner, protrusions 42 matched with the grooves 40 are fixed at the tops of the prismatic rods 41, and the outer sides of the prismatic rods 41 are sleeved with limit springs 43.

It should be noted that: when rotating post 6 and once making an L template 8 be in vertical state at every turn, arch 42 will carry out the joint with recess 40 for rotate post 6 and remain stable, also can make regulating plate 18 when moving down, can drive arch 42 and break away from recess 40, when the regulating plate 18 shifts up and resets, can not bring the rotation to rotating post 6, makes it more stable.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. A belt cleaning device for processing quick-frozen vegetables is characterized by comprising:

wash case (1), it is the rectangle framework to wash case (1), just it has division board (2) to wash case (1) internal fixation, and pass through division board (2) will wash case (1) and separate into two cell bodies, the crisscross a plurality of baffles (3) that are fixed with of equidistance in two cell bodies, and the crisscross a plurality of wiper mechanism (4) that are used for the vegetables abluent of installing of equidistance in two cell bodies.

2. The cleaning device for processing quick-frozen vegetables according to claim 1, wherein: wiper mechanism (4) include axis of rotation (5), axis of rotation (5) both ends respectively with wash case (1) outer wall with division board (2) rotate and connect, axis of rotation (5) outside is fixed with rotates post (6), just rotate post (6) outside and wait the angle to open and have a plurality of mounting grooves (7), it is a plurality of to rotate post (6) outside correspondence mounting groove (7) position department all is fixed with L template (8), and a plurality of all install in mounting groove (7) and empty piece (9), it corresponds to wash case (1) outside axis of rotation (5) position department installs drive assembly (10).

3. The cleaning device for processing quick-frozen vegetables according to claim 2, wherein: drive assembly (10) is including fixing drive sleeve (11) in axis of rotation (5) outside, it corresponds to wash case (1) outside axis of rotation (5) position department opens and has two installing port (12) opposite in orientation, and two installing port (12) internal fixation has driving piece (13), it is fixed with mounting bracket (14) to wash case (1) outside to rotate through mounting bracket (14) and install and stretch into runner (15) in drive sleeve (11), angle such as drive sleeve (11) inboard is fixed with a plurality of ratchets (16), just a plurality of pawls (17) are installed to runner (15) outside equidistance, runner (15) outside is fixed with regulating plate (18), just it has the sliding opening to open in regulating plate (18), and the slip grafting has to stretch into in the sliding opening regulation pole (19) in installing port (12).

4. The cleaning device for processing quick-frozen vegetables according to claim 3, wherein: the driving piece (13) comprises a bidirectional screw rod (20), a fixing frame (21) is fixed at the position of the outer side of the cleaning box (1) corresponding to the mounting port (12), the fixing frame (21) is rotationally connected with one end of the bidirectional screw rod (20), a connecting rod (22) is fixed at the bottom end of the bidirectional screw rod (20), the connecting rod (22) penetrates through the bottom of the mounting port (12) in a sliding manner and extends into the next mounting port (12), a driving motor (44) is fixed in the mounting port (12) at the bottom, the output end of the driving motor (44) is fixed at the bottom of the connecting rod (22) through a coupler, a mounting table (23) is sleeved at the outer side of the connecting rod (22) in a sliding manner, the outer side of the mounting table (23) is fixed with the adjusting rod (19), and a moving table (24) is sleeved at the outer side of the bidirectional screw rod (20) in a threaded manner, and an L-shaped frame (25) is arranged on the outer side of the mobile station (24), and a linkage piece (26) is arranged between the mobile station (24) and the mounting table (23).

5. The cleaning device for processing quick-frozen vegetables according to claim 4, wherein: the linkage piece (26) comprises a plurality of linkage rods (27) fixed on the mounting table (23), the linkage rods (27) penetrate through the mounting opening (12) in a sliding mode and extend into the mounting opening (12) above, a supporting ring (28) sleeved on the outer side of the bidirectional screw rod (20) is fixed at the top of each linkage rod (27), and an extrusion spring (29) abutted against the inner wall of the mounting opening (12) and the supporting ring (28) is sleeved on the outer side of each linkage rod (27).

6. The cleaning device for processing quick-frozen vegetables according to claim 2, wherein: the dumping piece (9) comprises a rotating shaft (30) fixed at the outer end of the mounting groove (7), a dumping plate (31) is sleeved outside the rotating shaft (30), a torsion spring fixed with the bottom end of the tilting plate (31) is sleeved outside the rotating shaft (30), a receiving groove (32) is formed at the bottom of the tilting plate (31), and a telescopic plate (33) is inserted in the containing groove (32) in a sliding way, a clamping groove is arranged at the bottom of the outer end of the telescopic plate (33), a clamping strip matched with the clamping groove is fixed at the outer end of the L-shaped frame (25), two insertion rods (34) inserted with the inner wall of the accommodating groove (32) are fixed at the other end of the expansion plate (33), and the outer side of the inserted bar (34) is sleeved with a tension spring (35) which is fixed with the inner wall of the accommodating groove (32) and the inner end of the expansion plate (33), the partition plate (2) is provided with an inclined plate (36) for dumping vegetables.

7. The cleaning device for processing quick-frozen vegetables according to claim 1, wherein: wash case (1) outside and correspond baffle (3) position department installs through the motor frame and rotates motor (37), just it is fixed with connecting axle (38) through the shaft coupling to rotate motor (37) output, connecting axle (38) rotate to insert in wasing case (1), and with division board (2) rotate the butt joint, and the connecting axle (38) outside is fixed with rotates wheel (39).

8. The cleaning device for processing quick-frozen vegetables according to claim 1, wherein: the outer side of the driving sleeve (11) corresponds to a plurality of L-shaped plates (8) and is provided with a groove (40), a prismatic rod (41) is inserted in the mounting rack (14) in a sliding mode, a protrusion (42) matched with the groove (40) is fixed to the top of the prismatic rod (41), and a limiting spring (43) is sleeved on the outer side of the prismatic rod (41).

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