CN112195990A

CN112195990A - Hydrostatic bulldozer with high-driving structure

Info

Publication number: CN112195990A
Application number: CN202011012827.6A
Authority: CN
Inventors: 蒋宏刚; 李猛猛; 陈洪新; 黄家琴; 曹培雷
Original assignee: Jiangsu Hantui Heavy Industry Co ltd
Current assignee: Jiangsu Hantui Heavy Industry Co ltd
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-01-08

Abstract

The invention discloses a hydrostatic bulldozer applying a high-driving structure, relates to the technical field of bulldozers, and aims to solve the problems that an existing bulldozer is heavy in operation, poor in flexibility, extremely hard in operation of operators, low in energy utilization rate of engineering machinery, not energy-saving and environment-friendly. The soil pushing device is characterized in that a cab is arranged at the upper end of the high-drive bulldozer, an advancing track is arranged at the lower end of the cab, an engine cabin is arranged on one side of the cab, a lifting oil cylinder is arranged on one side of the engine cabin, a soil pushing bucket is arranged at the lower end of the lifting oil cylinder, an inclined oil cylinder is arranged on one side of the soil pushing bucket, a grounding support plate is arranged at the lower end of the soil pushing bucket, an auxiliary grounding roller is arranged inside the grounding support plate, and a scarifier is installed at the tail of the high-drive bulldozer.

Description

Hydrostatic bulldozer with high-driving structure

Technical Field

The invention relates to the technical field of bulldozers, in particular to a hydrostatic bulldozer with a high-driving structure.

Background

The bulldozer is an engineering vehicle, a large metal scraper knife is arranged in front of the bulldozer, the scraper knife is put down when the bulldozer is used, mud, sand, stones and the like are shoveled forwards and pushed, the position and the angle of the scraper knife can be adjusted, the shoveling, the carrying and the unloading work can be completed independently, and the bulldozer has the advantages of being flexible in operation, convenient to rotate, small in required working surface, high in driving speed and the like, and is mainly suitable for shallow digging and short transporting of one type of soil to three types of soil, such as site cleaning or leveling, excavation of foundation pits with small depth, backfilling, pushing of roadbed with small height and the like.

In recent years, because a bulldozer is heavy in operation and poor in flexibility, operators are extremely hard to work, the energy utilization rate of engineering machinery is low, energy is not saved, environment is protected, if a bulldozer can be operated simply and easily, and energy, environment and oil are saved, a good operation environment can be provided for an operator, so that the work of the operator is easier and more comfortable, and the purposes of environment protection and consumption reduction can be achieved, so that the bulldozer which can make a driver work easily and labor-saving, save energy, reduce consumption, protect environment and save oil is urgently needed.

Disclosure of Invention

The invention aims to provide a hydrostatic bulldozer with a high-driving structure, which aims to solve the problems of heavy operation, poor flexibility, hard work of operators, low energy utilization rate of engineering machinery, energy conservation and environmental protection of the existing bulldozer in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the hydrostatic bulldozer with the high-driving structure comprises a high-driving bulldozer, wherein a cab is arranged at the upper end of the high-driving bulldozer, an advancing crawler belt is arranged at the lower end of the cab, an engine cabin is arranged on one side of the cab, a lifting oil cylinder is arranged on one side of the engine cabin, a soil pushing bucket is arranged at the lower end of the lifting oil cylinder, an inclined oil cylinder is arranged on one side of the soil pushing bucket, a grounding support plate is arranged at the lower end of the soil pushing bucket, an auxiliary grounding roller is arranged inside the grounding support plate, and a scarifier is mounted at the tail of the high-driving bulldozer.

Preferably, the lower extreme of driver's cabin is provided with the driver's cabin and bears the seat, and the driver's cabin bears the seat and passes through activity pivot and driver's cabin swing joint, the inside that the driver's cabin bore the seat is provided with the upset pneumatic cylinder, and the output of upset pneumatic cylinder and the lower extreme fixed connection of driver's cabin, the driver's cabin bears and is provided with the upset bumper shock absorber between seat and the driver's cabin.

Preferably, the inside in engine compartment is provided with the heavy tank formula oil tank, the upper end and the lower extreme of heavy tank formula oil tank are provided with the oil filler point respectively and refuel the seat, be provided with the shock pad between refueling seat and the heavy tank formula oil tank, the one end of heavy tank formula oil tank is provided with defeated oil pipe.

Preferably, the auxiliary grounding roller is provided with a hollow inner groove outside, the hollow inner groove and the grounding support plate are integrally formed, the outer walls of two sides of the auxiliary grounding roller are provided with connecting shafts, and the connecting shafts and the auxiliary grounding roller are integrally formed.

Preferably, all be provided with the embedded groove on the both sides inner wall of cavity inside groove, and embedded groove and cavity inside groove integrated into one piece set up, the inside of embedded groove is provided with the bearing, and the bearing passes through holding bolt and embedded groove fixed connection, supplementary ground roll passes through the connecting axle at both ends and the inside bearing swing joint of embedded groove.

Preferably, be provided with the installation frame on the high bull-dozer that drives one side outer wall, and install the frame and drive one side outer wall welded connection of bull-dozer highly, the upper end of installation frame is provided with the connection cassette, and connects cassette and installation frame welded connection, the upper end of agitator is provided with the connection mainboard, and connects mainboard and agitator integrated into one piece setting, the upper end of connecting the mainboard is provided with the hangers board, and the hangers board sets up with being connected mainboard integrated into one piece.

Preferably, be provided with the hydraulic pressure connecting rod between hangers board and the connection cassette, and the both ends of hydraulic pressure connecting rod are respectively through loose axle and hangers board and connection cassette swing joint, the both sides of hangers board all are provided with the bucket ear board, and two bucket ear boards pass through loose axle and installation frame swing joint.

Preferably, the lower extreme of agitator is provided with the tooth that loosens the soil, and loosens the soil the tooth and set up with agitator integrated into one piece, all be provided with the backplate on the outer wall of the tooth that loosens the soil, and the backplate passes through screw fixed connection with the outer wall of the tooth that loosens the soil.

Preferably, a hydraulic push rod is arranged inside the travelling crawler, guide wheels and drive wheels are arranged at two ends of the hydraulic push rod, the drive wheels and the guide wheels are in transmission connection with the travelling crawler, a plurality of thrust wheels are arranged at the lower end of the hydraulic push rod, and the plurality of thrust wheels are in transmission connection with the travelling crawler.

Preferably, the inside in engine compartment is provided with the transfer case, be provided with drive frame on the preceding terminal surface of transfer case, and drive frame and transfer case integrated into one piece set up, drive frame's inside is provided with two drive connection grooves, and drive connection groove and drive frame integrated into one piece set up.

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

1. the hydraulic driving system comprises two sets of variable plunger pumps connected in parallel, two sets of walking motors, a driving controller and a control handle, wherein the power output ends of the walking motors are fixedly connected with a speed reducer, a track driving wheel drives a track, a trolley frame is arranged on a rack, a driven track wheel is arranged on the trolley frame, and the tracks arranged on the track driving wheel and the driven track wheel enclose a triangle; through parallelly connected setting work oil pump, variable plunger pump and fan oil pump, the operation of being convenient for, install the track drive wheel in the frame simultaneously, break away from walking frame installation, eliminate the impact load that the ground direct transmission given the track drive wheel, effectively prolong the life of variable plunger pump, improve driver's driving comfort level, it is heavy to have overcome current bull-dozer operation, and the flexibility is poor, and operating personnel works extremely painstakingly, and engineering machine tool energy utilization is rateed lowly moreover, problem energy-concerving and environment-protective not.

2. The cab can be turned over by forty-five degrees, so that the inner part of the engine can be exposed very easily, the detection, maintenance and repair of parts can be realized easily, and the sink type fuel tank can ensure that the engine can suck fuel even if the fuel allowance is less. Paste when equipment marchs on the slope really, the advantage is obvious, and cost of maintenance is low: the hydrostatic system has ultralow failure rate, reasonable spatial layout, no gearbox, hydraulic torque converter, transmission assembly in a rear axle box and the like, convenient and fast maintainability, reduced maintenance time and simple maintenance.

3. The power range of the engine is large, and the design of electronic control, power output and torque curve ensures that powerful power and traction force can be output during the operation of the bulldozer and the operation of loosening the soil. The engine is always operated at a nominal constant speed in the lowest oil consumption interval even if the working load changes, the required power is continuously provided while the maximum economy is ensured, the hydrostatic transmission is that a driver can easily select a proper working speed, the speed and the torque are automatically adjusted, the system automatically maintains the peak value 39067of the engine, the peak efficiency and the crawler efficiency are high, the crawler slip is small, and the maximum working source is continuously transmitted to the crawler. Hydrostatic transmission can realize the pivot of equipment and turn to, reduces turning radius, compression turn time, and colleague under the no load condition, walking speed is improved and is much faster than traditional gearshift equipment. The hydraulic system and the engine are added with an anti-flameout program, so that the normal operation of the engine is ensured even under extreme load.

4. When the bulldozing fill of high bull-dozer of driving is close to ground and is bulldozed the during operation, the inside supplementary ground roll of ground connection layer board can roll with ground contact, thereby reduced the frictional force of bulldozing fill when pressing close to ground bulldozing, the noise that produces when bulldozing has been alleviated, the size of supplementary ground roll equals and mechanical seal connects with the opening size of cavity inside groove lower extreme, thereby avoided earth to get into the inside supplementary ground roll pivoted problem of restraineing of cavity inside groove, install the agitator with the afterbody earlier before the use and carry out the operation of loosening the soil, the tooth that loosens the soil of the in-process agitator lower extreme of loosening the soil smashes the inside caking part of soil, thereby reach the purpose of preliminary treatment loose the soil before bulldozing.

5. Unique hydraulic lifting cylinder type for the spiller is closer to the organism, more can effectively exert traction force, improves and pushes away the shovel effect, and the transfer case that is equipped with makes walking pump and working pump divide two to be arranged, avoids five coaxial pumps, has reduced the degree of difficulty of the vibrations trouble and the problem investigation and the maintenance of this department.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a ripper attachment configuration of the present disclosure;

FIG. 3 is a schematic structural view of the transfer case of the present invention;

FIG. 4 is a schematic view of the bulldozer bucket of the present invention;

FIG. 5 is an enlarged view of part A of the present invention;

FIG. 6 is a schematic view of the cab tilting structure of the present invention;

FIG. 7 is a schematic view of the sink fuel tank of the present invention;

in the figure: 1. a high-drive bulldozer; 2. a cab; 3. an engine compartment; 4. a soil pushing hopper; 5. lifting the oil cylinder; 6. a traveling crawler; 7. a drive wheel; 8. a thrust wheel; 9. a guide wheel; 10. a hydraulic push rod; 11. a ripper; 12. loosening teeth; 13. inclining the oil cylinder; 14. a guard plate; 15. connecting the main board; 16. an ear hanging plate; 17. a mounting frame; 18. a lug plate; 19. a hydraulic link; 20. connecting the card holder; 21. a transfer case; 22. a drive frame; 23. driving a connecting groove; 24. a grounding support plate; 25. a hollow interior groove; 26. an auxiliary grounding roller; 27. a connecting shaft; 28. a groove is embedded; 29. a bearing; 30. turning over the hydraulic cylinder; 31. a cab load bearing seat; 32. a movable rotating shaft; 33. turning over the shock absorber; 34. a sink tank type oil tank; 35. a shock pad; 36. an oil adding seat; 37. an oil filling port; 38. and (7) conveying the oil pipe.

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.

Referring to fig. 1-7, an embodiment of the present invention is shown: the utility model provides an use quiet hydraulic bulldozer of high drive structure, including high bull-dozer 1 of driving, the upper end of high bull-dozer 1 of driving is provided with driver's cabin 2, the lower extreme of driver's cabin 2 is provided with track 6 of marcing, one side of driver's cabin 2 is provided with engine compartment 3, one side of engine compartment 3 is provided with lift cylinder 5, the lower extreme of lift cylinder 5 is provided with pushes away native fill 4, one side of pushing away native fill 4 is provided with slope hydro-cylinder 13, the lower extreme of pushing away native fill 4 is provided with ground connection layer board 24, ground connection layer board 24's inside is provided with supplementary ground connection roller 26, agitator 11 is installed to the afterbody.

Further, the lower extreme of driver's cabin 2 is provided with driver's cabin and bears seat 31, and the driver's cabin bears seat 31 through activity pivot 32 and driver's cabin 2 swing joint, the inside that the driver's cabin bore seat 31 is provided with upset pneumatic cylinder 30, and the output of upset pneumatic cylinder 30 and the lower extreme fixed connection of driver's cabin 2, the driver's cabin bears and is provided with upset bumper shock absorber 33 between seat 31 and the driver's cabin 2, the driver's cabin that the lower extreme of driver's cabin 2 set up bears seat 31 and plays the effect of bearing driver's cabin 2 and carrying out the upset, thereby be convenient for driver's cabin 2.

Further, the internal of the engine compartment 3 is provided with a sink type oil tank 34, the upper end and the lower end of the sink type oil tank 34 are respectively provided with an oil filling port 37 and an oil filling seat 36, a shock pad 35 is arranged between the oil filling seat 36 and the sink type oil tank 34, one end of the sink type oil tank 34 is provided with an oil conveying pipe 38, and the sink type oil tank 34 arranged in the internal of the engine compartment 3 plays a role in ensuring that the engine can absorb fuel oil even if the fuel oil allowance is small.

Further, the outside of the auxiliary grounding roller 26 is provided with a hollow inner groove 25, the hollow inner groove 25 and the grounding support plate 24 are arranged, the grounding support plate 24 and the hollow inner groove 25 are integrally formed, the outer walls of two sides of the auxiliary grounding roller 26 are both provided with a connecting shaft 27, the connecting shaft 27 and the auxiliary grounding roller 26 are integrally formed, the hollow inner groove 25 arranged outside the auxiliary grounding roller 26 bears the effect of the auxiliary grounding roller 26, and the connecting shafts 27 arranged on the outer walls of two sides of the auxiliary grounding roller 26 are both convenient for the effect of movably connecting the auxiliary grounding roller 26 and the bearing 29.

Further, all be provided with embedded groove 28 on the both sides inner wall of cavity inside groove 25, and embedded groove 28 sets up with cavity inside groove 25 integrated into one piece, the inside of embedded groove 28 is provided with bearing 29, and bearing 29 is through holding bolt and embedded groove 28 fixed connection, supplementary ground roll 26 is through the connecting axle 27 at both ends and the inside bearing 29 swing joint of embedded groove 28, the embedded groove 28 that all sets up on the both sides inner wall of cavity inside groove 25 plays the effect of being convenient for bearing 29 fixed mounting, the inside bearing 29 that sets up of embedded groove 28 plays the effect of being convenient for supplementary ground roll 26 ground connection.

Further, be provided with installation frame 17 on the outer wall of high earth mover 1 one side, and installation frame 17 and the outer wall welded connection of one side of high earth mover 1 that drives, the upper end of installation frame 17 is provided with connection cassette 20, and connect cassette 20 and installation frame 17 welded connection, the upper end of agitator 11 is provided with connection mainboard 15, and connect mainboard 15 and agitator 11 integrated into one piece setting, the upper end of connecting mainboard 15 is provided with hangers board 16, and hangers board 16 sets up with connection mainboard 15 integrated into one piece, installation frame 17 that sets up on the outer wall of high earth mover 1 one side is convenient for agitator 11 erection joint's effect, the connection mainboard 15 that the upper end of agitator 11 set up plays supplementary agitator 11 and installation frame 17 fixed mounting's effect.

Further, be provided with hydraulic link 19 between hangers board 16 and the connection cassette 20, and hydraulic link 19's both ends are respectively through loose axle and hangers board 16 and connection cassette 20 swing joint, hangers board 16's both sides all are provided with ears board 18, and two ears board 18 pass through loose axle and installation frame 17 swing joint, hangers board 16 and the hydraulic link 19 who is connected and set up between the cassette 20 play and connect hangers board 16 and connection cassette 20 to make the nimble adjustable installation of scarifier 11 connect on the cassette 20.

Further, the lower extreme of ripper 11 is provided with loosening teeth 12, and loosening

teeth

12 and 11 integrated into one piece of ripper set up, all be provided with backplate 14 on the outer wall of loosening teeth 12, and backplate 14 passes through screw fixed connection with the outer wall of loosening teeth 12, and loosening teeth 12 that the lower extreme of ripper 11 set up play the effect of loosening the soil, and backplate 14 that all set up on the outer wall of loosening teeth 12 plays the mesh of reinforcing protection loosening teeth 12.

Further, the inside of advancing track 6 is provided with hydraulic rod 10, hydraulic rod 10's both ends are provided with leading wheel 9 and drive wheel 7, and drive wheel 7 and leading wheel 9 all are connected with the transmission of advancing track 6, hydraulic rod 10's lower extreme is provided with a plurality of thrust wheel 8, and a plurality of thrust wheel 8 all is connected with advancing track 6 transmission, the hydraulic rod 10 of advancing track 6's inside setting plays the effect of bearing guide wheel 9 and drive wheel 7, a plurality of thrust wheel 8 that hydraulic rod 10's lower extreme set up plays the effect of supplementary advancing track 6 steady travel.

Further, the inside of engine compartment 3 is provided with transfer case 21, be provided with drive frame 22 on the preceding terminal surface of transfer case 21, and drive frame 22 sets up with transfer case 21 integrated into one piece, drive frame 22's inside is provided with two drive connection grooves 23, and drive connection groove 23 sets up with drive frame 22 integrated into one piece, transfer case 21 that the inside of engine compartment 3 set up plays to make walking pump and working pump divide two to be listed as and arranges, it is coaxial to avoid five pumps, the vibrations trouble and the difficulty of problem investigation and maintenance that have reduced this department.

The working principle is as follows: when the high-drive bulldozer 1 is used, the tail part is firstly installed on the ripper 11 to loosen soil, the ripping teeth 12 at the lower end of the ripper 11 break the agglomerated parts inside the soil in the ripping process, so that the purpose of pre-processing soil loosening before bulldozer is achieved, when the bulldozer bucket 4 of the high-drive bulldozer 1 is close to the ground to perform bulldozer work, the auxiliary grounding roller 26 inside the grounding support plate 24 can contact and roll with the ground, so that the friction force of the bulldozer bucket 4 when the bulldozer bucket is close to the ground to doze is reduced, the noise generated in bulldozer work is relieved, the size of the auxiliary grounding roller 26 is equal to the size of the opening at the lower end of the hollow inner groove 25, and the auxiliary grounding roller 26 is in mechanical sealing connection, so that the problem that the soil enters the hollow inner groove 25 to inhibit the rotation of the auxiliary grounding roller 26 is solved, the cab 2 can be turned for forty-five, the sink tank type oil tank 34 can ensure that the engine can suck fuel even if the fuel allowance is small, has obvious advantages when the equipment actually runs on a slope, and completes the use work of the hydrostatic bulldozer with a high-driving structure.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A hydrostatic bulldozer using a high drive structure, comprising a high drive bulldozer (1), characterized in that: the high-drive bulldozer is characterized in that a cab (2) is arranged at the upper end of the high-drive bulldozer (1), an advancing track (6) is arranged at the lower end of the cab (2), an engine cabin (3) is arranged on one side of the cab (2), a lifting oil cylinder (5) is arranged on one side of the engine cabin (3), a soil pushing bucket (4) is arranged at the lower end of the lifting oil cylinder (5), an inclined oil cylinder (13) is arranged on one side of the soil pushing bucket (4), a grounding support plate (24) is arranged at the lower end of the soil pushing bucket (4), an auxiliary grounding roller (26) is arranged inside the grounding support plate (24), and a scarifier (11) is arranged at the tail of the high-drive bulldozer (1).

2. The hydrostatic bulldozer using a high drive structure, according to claim 1, wherein: the lower extreme of driver's cabin (2) is provided with driver's cabin and bears seat (31), and the driver's cabin bears seat (31) through activity pivot (32) and driver's cabin (2) swing joint, the inside that the driver's cabin bore seat (31) is provided with upset pneumatic cylinder (30), and the output of upset pneumatic cylinder (30) and the lower extreme fixed connection of driver's cabin (2), the driver's cabin bears and is provided with upset bumper shock absorber (33) between seat (31) and driver's cabin (2).

3. The hydrostatic bulldozer using a high drive structure, according to claim 1, wherein: the inside of engine compartment (3) is provided with sink formula oil tank (34), the upper end and the lower extreme of sink formula oil tank (34) are provided with oiling mouth (37) and refuel seat (36) respectively, be provided with shock pad (35) between refuel seat (36) and sink formula oil tank (34), the one end of sink formula oil tank (34) is provided with defeated oil pipe (38).

4. The hydrostatic bulldozer using a high drive structure, according to claim 1, wherein: the auxiliary grounding roller is characterized in that a hollow inner groove (25) is formed in the outer portion of the auxiliary grounding roller (26), the hollow inner groove (25) and the grounding support plate (24) are arranged, the grounding support plate (24) and the hollow inner groove (25) are integrally formed, connecting shafts (27) are arranged on the outer walls of the two sides of the auxiliary grounding roller (26), and the connecting shafts (27) and the auxiliary grounding roller (26) are integrally formed.

5. The hydrostatic bulldozer using a high drive structure, according to claim 4, wherein: all be provided with embedded groove (28) on the both sides inner wall of cavity inside groove (25), and embedded groove (28) and cavity inside groove (25) integrated into one piece set up, the inside of embedded groove (28) is provided with bearing (29), and bearing (29) through holding bolt and embedded groove (28) fixed connection, supplementary ground roller (26) are through connecting axle (27) at both ends and bearing (29) swing joint inside embedded groove (28).

6. The hydrostatic bulldozer using a high drive structure, according to claim 1, wherein: be provided with installation frame (17) on the high bull-dozer that drives (1) one side outer wall, and installation frame (17) and the high one side outer wall welded connection who drives bull-dozer (1), the upper end of installation frame (17) is provided with connects cassette (20), and connects cassette (20) and installation frame (17) welded connection, the upper end of agitator (11) is provided with connects mainboard (15), and connects mainboard (15) and agitator (11) integrated into one piece setting, the upper end of connecting mainboard (15) is provided with hangers board (16), and hangers board (16) and connection mainboard (15) integrated into one piece setting.

7. The hydrostatic bulldozer using a high drive structure, according to claim 6, wherein: be provided with hydraulic pressure connecting rod (19) between hangers board (16) and connection cassette (20), and the both ends of hydraulic pressure connecting rod (19) are respectively through loose axle and hangers board (16) and connection cassette (20) swing joint, the both sides of hangers board (16) all are provided with bucket ear board (18), and two bucket ear boards (18) are through loose axle and installation frame (17) swing joint.

8. The hydrostatic bulldozer using a high drive structure, according to claim 6, wherein: the lower extreme of agitator (11) is provided with tooth (12) that loosens the soil, and loosens the soil tooth (12) and set up with agitator (11) integrated into one piece, all be provided with backplate (14) on the outer wall of tooth (12) that loosens the soil, and backplate (14) pass through screw fixed connection with the outer wall of tooth (12) that loosens the soil.

9. The hydrostatic bulldozer using a high drive structure, according to claim 1, wherein: the inside of advancing track (6) is provided with hydraulic push rod (10), the both ends of hydraulic push rod (10) are provided with leading wheel (9) and drive wheel (7), and drive wheel (7) and leading wheel (9) all are connected with advancing track (6) transmission, the lower extreme of hydraulic push rod (10) is provided with a plurality of thrust wheel (8), and a plurality of thrust wheel (8) all are connected with advancing track (6) transmission.

10. The hydrostatic bulldozer using a high drive structure, according to claim 1, wherein: the inside of engine compartment (3) is provided with transfer case (21), be provided with drive frame (22) on the preceding terminal surface of transfer case (21), and drive frame (22) and transfer case (21) integrated into one piece set up, the inside of drive frame (22) is provided with two drive spread groove (23), and drive spread groove (23) and drive frame (22) integrated into one piece set up.