CN110758555A - Loader steering cut-off system - Google Patents
Loader steering cut-off system Download PDFInfo
- Publication number
- CN110758555A CN110758555A CN201911101356.3A CN201911101356A CN110758555A CN 110758555 A CN110758555 A CN 110758555A CN 201911101356 A CN201911101356 A CN 201911101356A CN 110758555 A CN110758555 A CN 110758555A
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- pin
- rod
- valve
- frame
- loader
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D12/00—Steering specially adapted for vehicles operating in tandem or having pivotally connected frames
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automatic Assembly (AREA)
Abstract
The invention discloses a steering cutting-off system of a loader, which comprises two cutting-off valves which are respectively connected with a front connecting part of a rear frame through mounting brackets and are provided with valve rods extending forwards, a rear connecting part of the front frame hinged with the front connecting part of the rear frame, a rear connecting part of the front frame and provided with two rear isosceles side surfaces and a rear arc surface connected with the two rear isosceles side surfaces, wherein each mounting bracket is provided with an extension plate part extending forwards and provided with a sliding groove, and the extension plate part is provided with a sliding block on the sliding groove in front of the valve rod; the slider has slider body and establishes pin and the uide pin on this slider body, and the uide pin is worn to adorn in the spout of extension board, and the pin is articulated with the one end of connecting rod, and the other end of connecting rod is articulated with front frame back switching portion through the round pin axle, and the slider body is equipped with the screw rod through adjusting nut on the terminal surface of nearly valve rod one side. Compared with the prior art, the invention can ensure that the crimping part of the screw rod is opposite to and collides with the valve rod, cuts off the steering oil way and avoids the problem of failure of a steering cutting system of the loader.
Description
Technical Field
The invention relates to the technical field of manufacturing of engineering machinery steering cutting systems, in particular to a steering cutting system for a loader.
Background
There is a loader steering cut-off system as shown in fig. 1, which includes a front frame and a rear frame, the rear frame is provided with a rear frame front joint 02, the front frame is provided with a front frame rear joint 03 extending toward the rear frame front joint 02, the front frame rear joint 03 is provided with two rear isosceles side surfaces and a rear arc surface connecting the two rear isosceles side surfaces; the front frame rear adapter part 03 is hinged with the rear frame front adapter part 02, the rear frame front adapter part 02 is respectively provided with a cut-off valve 01 at two rear isosceles side surfaces close to the front frame rear adapter part 03, the cut-off valve 01 is provided with a valve rod 01-01 extending forwards, and the cut-off valve 01 is arranged at the rear frame front adapter part 02 through a mounting bracket 04; the front frame rear adapter part 03 is respectively provided with a steering cut-off system ejector rod device 05 at the position close to the two cut-off valves; the push rod device 05 of the steering cutting system is provided with L-shaped plates 05-02 which are respectively arranged at the outer edges of two rear isosceles side surfaces of a rear adapter part 03 of a front frame, a screw rod 05-01 is penetrated and installed on a vertical plate part of the L-shaped plates 05-02 through a nut, and a crimping part is arranged at the end of the screw rod 05-01 close to the front adapter part 02 of the rear frame. When the loader turns to one side of the push rod device 05 of the steering cutting-off system, the screw rod 05-01 turns to a certain angle along with the rear adapter 02 of the front frame, and the press-connection part on the screw rod 05-01 is pressed on the valve rod 01-01 of the cut-off valve 01 on the front adapter 02 of the rear frame, so that a steering oil way is cut off, the failure of the steering cutting-off system of the loader is avoided, and the purpose of eliminating collision of the front frame and the rear frame when the front frame and the rear frame turn to the. However, the loader steering cutting-off system has the following defects in the use process: 1. the steering cutting-off system requires higher precision, so the installation position of the L-shaped plate and the threaded hole for penetrating the ejector rod on the L-shaped plate also need higher precision, and the positioning reference of the threaded hole on the L-shaped plate must be the center of the hinge hole; the hinge hole is processed after welding, the processing quality of the hinge hole can influence the installation precision of the ejector rod, and more importantly, the L-shaped plate cannot be adjusted in the non-angle direction and the height direction; moreover, because the cut-off valve is arranged at the front connecting part of the rear frame through the mounting bracket, the mounting error also exists; when the accumulated error of the machining error and the installation error is large, the crimping part at the rear end of the ejector rod on the rear adapter part of the front frame cannot be accurately crimped with the valve rod of the cut-off valve on the front adapter part of the rear frame, so that the whole steering cut-off system of the loader fails.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a steering and cutting system of a loader, and solve the problem that the whole steering and cutting system of the loader fails due to the fact that a crimping part on a screw rod positioned on a rear transition part of a front frame cannot be accurately crimped with a valve rod of a cutting valve positioned on a front transition part of a rear frame.
The technical scheme adopted by the invention for solving the technical problem is as follows: the steering cutting-off system of the loader comprises two cutting-off valves which are respectively connected with a front connecting part of a rear frame through mounting brackets and are provided with valve rods extending forwards, and a rear connecting part of the front frame hinged with the front connecting part of the rear frame, wherein the rear connecting part provided with the front frame is provided with two rear isosceles side surfaces and a rear arc surface connected with the two rear isosceles side surfaces; the slide block is provided with a slide block body, and a pin and a guide pin which are arranged on the slide block body, the guide pin is arranged in a sliding groove of the extension plate part in a penetrating mode, the pin is hinged to one end of a connecting rod, the other end of the connecting rod is hinged to a rear switching part of the front frame through a pin shaft, and a screw rod is arranged on the end face, close to one side of the valve rod, of the slide block body through an adjusting nut.
In the technical solution of the steering cutting system of the loader, a more specific technical solution may be: two the installing support is including setting up the nut piece at front junction portion both sides rear portion before the back frame, the nut piece is connected with the mounting panel, the mounting panel have extension board and with the trip valve installation board that extension board linked, two the trip valve passes through the bolt and installs on the trip valve installation board.
Further: the two connecting rods are hinged to the front frame rear switching portion near the two sides of the rear isosceles side face through the pin shaft penetrating through the first pin hole, and the other ends of the two connecting rods extend out of the rear isosceles side face and are sleeved on the pin shaft through the first pin hole.
Further: and the end of the screw rod close to the valve rod side is provided with a crimping part.
Further: the guide pin is located the slider body is close to the one end of extension board portion spout, the axis of guide pin with the axis of pin is perpendicular setting, the pin is located the slider body with the extension board of the other end that the guide pin is relative.
Further: the slider body is equipped with on the terminal surface of nearly valve rod one side the screw hole of installation the screw rod, the crimping portion of screw rod with the valve rod is aligned.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects: 1. because the cut-off valve of the valve stem that the forward stretches out of this loader turns to the cutting system is installed on front junction of the rear frame through the mounting bracket, the extension plate of the mounting bracket is articulated with one end of the tie rod 5 through the slide block that the concrete chute slides, another end of the tie rod is articulated with back junction of the front frame through the axis pin, therefore, back junction of the rear frame, back junction of the front frame, tie rod, slide block make up a crank slide block system, when the loader turns, the rotation of the back junction of the front frame is changed into the horizontal movement of the slide block, the crimping part of the threaded spindle on the body of the slide block can be right to colliding the valve stem, collide and compress the valve stem, thus cut off and turn to the oil circuit, has avoided the question that the whole loader turns to the cutting system to lose efficacy, realize the goal of; 2. the extension length of the screw can be greatly adjusted, and the adaptability is strong; and the valve rod can be protected from the lateral force applied during steering, and the service life of the cut-off valve is prolonged.
The front direction of the invention refers to the direction from the front connecting part of the rear frame to one end of the rear connecting part of the front frame.
Drawings
Fig. 1 is a schematic structural view of a conventional loader steering cutoff system.
Fig. 2 is a schematic structural diagram of an embodiment of the present invention.
Fig. 3 is an installation schematic of an embodiment of the invention.
FIG. 4 is a schematic view of the positional relationship of the slider, mounting plate and shut-off valve with valve stem of an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
the steering cutting system of the loader shown in fig. 2 and 3 comprises a rear frame provided with a front connection part 1 of the rear frame and a front frame provided with a rear connection part 4 of the front frame, wherein the rear connection part 4 of the front frame is hinged with the front connection part 1 of the rear frame, the rear connection part 4 of the front frame is provided with two rear isosceles sides which are respectively a rear isosceles side 4a and a rear isosceles side 4c, and a rear arc surface 4b is connected between the rear isosceles side 4a and the rear isosceles side 4 c; the loader steering cut-off system also comprises two cut-off valves 9 which are respectively connected with the front joint part 1 of the rear frame through mounting brackets and are provided with valve rods 9-1 extending forwards; each mounting bracket is provided with an extension plate part 8-1 which extends forwards and is provided with a sliding groove, the two mounting brackets of the embodiment comprise nut blocks 2 welded at the rear parts of two sides of a front connecting part of a rear frame, the nut blocks 2 are connected with a mounting plate 8 through bolts, the mounting plate 8 is provided with the extension plate part 8-1 and a stop valve mounting plate part 8-2 connected with the extension plate part 8-1, the extension plate part 8-1 and the stop valve mounting plate part 8-2 of the embodiment are the same plate body, and two stop valves 9 are respectively mounted on the stop valve mounting plate part 8-2 of the mounting plate 8 through bolts; a slide block 7 is arranged on a sliding groove of the extension plate part 8-1 in front of the valve rod 9-1; the slide block 7 is provided with a slide block body 7-3, a pin 7-1 and a guide pin 7-4 which are arranged on the slide block body 7-3, the guide pin 7-4 is positioned at one end of the slide block body 7-3 close to the chute of the extension plate part 8-1, a guide threaded rod part is arranged on a rod part of the guide pin 7-4 which passes through the chute of the extension plate part 8-1, and a limit nut 11 is sleeved on the guide threaded rod part to limit the guide pin 7-4 to only slide in the chute; the axis of the guide pin 7-4 and the axis of the pin 7-1 are arranged vertically, the pin 7-1 is positioned on the extended plate part 7-2 at the other end of the slider body 7-3 opposite to the guide pin 7-4, a pin threaded rod section is arranged on a rod section of the pin 7-1, which passes through the second pin hole 5-2 at one end of the connecting rod 5, and a pin nut 12 is sleeved on the pin threaded rod section to ensure that the pin 7-1 is hinged with the connecting rod 5; the end face of the slider body 7-3 close to one side of the valve rod 9-1 is provided with a screw 10 through an adjusting nut 6, the end of the screw 10 close to one side of the valve rod 9-1 of the cut-off valve 9 is provided with a crimping part, the end face of the slider body 7-3 close to one side of the valve rod 9-1 is provided with a threaded hole for mounting the screw 10, when the screw 10 is screwed on the threaded hole, the crimping part of the screw 10 is aligned with the valve rod 9-1 of the cut-off valve 9, so that the crimping part of the screw 10 can be accurately crimped with the valve rod 9-1 of the cut-off valve 9, and the extension length of the screw 10 can be; as shown in fig. 4; the pin 7-1 is hinged with one end of the connecting rod 5, and the other end of the connecting rod 5 is hinged with the rear adapter part 4 of the front frame through the pin shaft 3; the two connecting rods 5 are provided in the embodiment, one ends of the two connecting rods 5 are respectively hinged to the front frame rear adapter part 4 close to the rear isosceles side surface 4a and the rear isosceles side surface 4c through pin shafts 3 penetrating through the first pin holes 5-1, and the other ends of the two connecting rods 5 provided with the second pin holes 5-2 respectively extend out of the rear isosceles side surface 4a and the rear isosceles side surface 4c and are respectively sleeved on the pins 7-1 through the second pin holes 5-2.
Because the cut-off valve 9 of the valve rod 9-1 which extends forwards of the steering cut-off system of the loader is arranged on the front adapter part 1 of the rear frame through the mounting bracket, the extension plate part of the mounting bracket is hinged with one end of the connecting rod 5 through the slide block 7 which slides on the chute, the other end of the connecting rod 5 is hinged with the rear adapter part 4 of the front frame through the pin shaft 3, therefore, the front adapter part 1 of the rear frame, the rear adapter part 4 of the front frame, the connecting rod 5 and the slide block 7 form a crank-slide block system, when the loader turns, the rotation of the rear adapter part 4 of the front frame is converted into the horizontal movement of the sliding block 7, the press part of the screw 10 on the sliding block body 7-3 can be over against the collision valve rod to collide and compress the valve rod 9-1, therefore, the steering oil way is cut off, the problem that the whole steering cutting system of the loader fails is solved, and the purpose of eliminating collision of the front and rear frames when the frames are steered to the extreme positions is achieved.
Claims (6)
1. The utility model provides a loader turns to cutting system, includes two trip valves that are connected through connecting portion before installing support and the back frame respectively and are equipped with the valve rod that stretches out forward, with switching portion behind the articulated preceding frame of connecting portion before the back frame, switching portion is equipped with the back arc surface that preceding frame back switching portion was equipped with two back isosceles sides and was connected two back isosceles sides, its characterized in that: each mounting bracket is provided with an extension plate part which extends forwards and is provided with a sliding groove, and a sliding block is arranged on the sliding groove of the extension plate part in front of the valve rod; the slide block is provided with a slide block body, and a pin and a guide pin which are arranged on the slide block body, the guide pin is arranged in a sliding groove of the extension plate part in a penetrating mode, the pin is hinged to one end of a connecting rod, the other end of the connecting rod is hinged to a rear switching part of the front frame through a pin shaft, and a screw rod is arranged on the end face, close to one side of the valve rod, of the slide block body through an adjusting nut.
2. The loader steering cutoff system of claim 1, wherein: two the installing support is including setting up the nut piece at front junction portion both sides rear portion before the back frame, the nut piece is connected with the mounting panel, the mounting panel have extension board and with the trip valve installation board that extension board linked, two the trip valve passes through the bolt and installs on the trip valve installation board.
3. The loader steering cutoff system of claim 1, wherein: the two connecting rods are hinged to the front frame rear switching portion near the two sides of the rear isosceles side face through the pin shaft penetrating through the first pin hole, and the other ends of the two connecting rods extend out of the rear isosceles side face and are sleeved on the pin shaft through the first pin hole.
4. The loader steering cut-off system of claim 1 or 2 or 3, wherein: and the end of the screw rod close to the valve rod side is provided with a crimping part.
5. The loader steering cutoff system of claim 4, wherein: the guide pin is located the slider body is close to the one end of extension board portion spout, the axis of guide pin with the axis of pin is perpendicular setting, the pin is located the slider body with the extension board of the other end that the guide pin is relative.
6. The loader steering cutoff system of claim 5, wherein: the slider body is equipped with on the terminal surface of nearly valve rod one side the screw hole of installation the screw rod, the crimping portion of screw rod with the valve rod is aligned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911101356.3A CN110758555B (en) | 2019-11-12 | 2019-11-12 | Loader steering cut-off system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911101356.3A CN110758555B (en) | 2019-11-12 | 2019-11-12 | Loader steering cut-off system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110758555A true CN110758555A (en) | 2020-02-07 |
| CN110758555B CN110758555B (en) | 2022-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911101356.3A Active CN110758555B (en) | 2019-11-12 | 2019-11-12 | Loader steering cut-off system |
Country Status (1)
| Country | Link |
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| CN (1) | CN110758555B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001018828A (en) * | 1999-07-02 | 2001-01-23 | Hitachi Constr Mach Co Ltd | Body bending type vehicle |
| CN201582416U (en) * | 2009-12-31 | 2010-09-15 | 石家庄市长宏阀门有限公司 | Pneumatic quick cut-off valve |
| CN202243428U (en) * | 2011-09-08 | 2012-05-30 | 江阴克威齿轮箱制造有限公司 | Gearbox power cutoff device |
| CN202292870U (en) * | 2011-10-18 | 2012-07-04 | 宜昌市东方印刷机械有限责任公司 | Pedal device of hydraulic paper cutter |
| CN202508146U (en) * | 2012-03-21 | 2012-10-31 | 山东威猛工程机械有限公司 | Loader hydraulic steering limiting device |
| CN205806585U (en) * | 2016-07-01 | 2016-12-14 | 浙江汉特姆阀门有限公司 | Normally closed type electromagnetic gas quick action emergency valve |
| CN207607541U (en) * | 2017-11-01 | 2018-07-13 | 厦门华厦学院 | A kind of loading machine steering mechanism |
-
2019
- 2019-11-12 CN CN201911101356.3A patent/CN110758555B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001018828A (en) * | 1999-07-02 | 2001-01-23 | Hitachi Constr Mach Co Ltd | Body bending type vehicle |
| CN201582416U (en) * | 2009-12-31 | 2010-09-15 | 石家庄市长宏阀门有限公司 | Pneumatic quick cut-off valve |
| CN202243428U (en) * | 2011-09-08 | 2012-05-30 | 江阴克威齿轮箱制造有限公司 | Gearbox power cutoff device |
| CN202292870U (en) * | 2011-10-18 | 2012-07-04 | 宜昌市东方印刷机械有限责任公司 | Pedal device of hydraulic paper cutter |
| CN202508146U (en) * | 2012-03-21 | 2012-10-31 | 山东威猛工程机械有限公司 | Loader hydraulic steering limiting device |
| CN205806585U (en) * | 2016-07-01 | 2016-12-14 | 浙江汉特姆阀门有限公司 | Normally closed type electromagnetic gas quick action emergency valve |
| CN207607541U (en) * | 2017-11-01 | 2018-07-13 | 厦门华厦学院 | A kind of loading machine steering mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110758555B (en) | 2022-05-27 |
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