CN220268066U - Four-position fixed reset mechanism of multi-way reversing valve - Google Patents
Four-position fixed reset mechanism of multi-way reversing valve Download PDFInfo
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- CN220268066U CN220268066U CN202321677874.1U CN202321677874U CN220268066U CN 220268066 U CN220268066 U CN 220268066U CN 202321677874 U CN202321677874 U CN 202321677874U CN 220268066 U CN220268066 U CN 220268066U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 22
- 239000010959 steel Substances 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model provides a reset mechanism is decided to multichannel switching-over valve four positions, includes the end cover of connecting in valve body one end, is equipped with valve pocket, preceding spring holder, reset spring, back spring holder and location steel ball in the end cover, reset spring centre gripping before between spring holder and the back spring holder, characterized by: the valve rod outer end of the multi-way reversing valve penetrates through the valve sleeve and the positioning sleeve in a clearance fit manner, a positioning column is arranged in the front spring seat, a connecting sleeve is inserted and clamped in the rear spring seat, two ends of the positioning column are fixedly connected with the valve rod and the connecting sleeve respectively, two positioning steel balls are arranged at two ends of a radial hole in the middle of the positioning column, and a positioning spring is arranged in the radial hole; one end of the positioning sleeve, which is close to the front spring seat, is provided with a positioning half groove; the middle part is equipped with a positioning groove in the position sleeve for realize the location when valve rod moves left. The mechanism has the advantages of simple structure, strong reset handfeel, reliable positioning, few parts and low processing cost.
Description
Technical Field
The utility model belongs to the field of engineering machinery hydraulic pressure, and particularly relates to a four-position fixed reset mechanism of a multi-way reversing valve.
Background
At present, the multi-way reversing valve in the domestic market has various fixed reset modes, and is frequently applied to three-position spring reset, three-position bouncing positioning and four-position bouncing positioning. However, in the two-piece multi-way valve for the hydraulic control system of the medium and small-sized loader, one valve for controlling the movable arm hydraulic cylinder is in four positions, wherein the three positions are spring reset, and the fourth position is bouncing positioning. This is mainly due to the fact that the boom of the loader has a floating position in addition to the lifting, lowering and stopping conditions. The floating position requires that the movable arm hydraulic cylinder is communicated with the rod cavity and the rodless cavity, and the oil return channel and the oil inlet, as shown in fig. 3, so that the working device can freely float along with the ground condition when the loader is in shoveling operation, the working efficiency of the loader can be improved, the movable arm can be quickly lowered when in light load or in empty bucket, and the working cycle time can be shortened.
As shown in FIG. 1, the fixed reset mechanism of four positions of the multi-way reversing valve in the market at present comprises an end cover 10 connected to one end of a valve body, wherein a valve sleeve 3, a front spring seat 7, a reset spring 6, a positioning column 5, a rear spring seat 9, an inner clamping spring, a ball seat 13, a positioning steel ball 11, a positioning sleeve 4, a positioning spring 12 and a positioning spring seat 14 are sequentially arranged in the end cover 10, one end of the positioning column is in threaded connection with one end of a valve rod of the multi-way reversing valve, the other end of the positioning column is inserted into the positioning sleeve 4, and the steel ball is clamped between the ball seat, the positioning sleeve and the positioning column and is positioned along the two conical surfaces, one annular groove and one outer clamping edge which are arranged on the positioning column.
The fixed reset mechanism has complex structure and more parts, the end of the spring reset stroke is perceived by means of the angle of the conical surface of the positioning column, the operation is easy to be over-positioned, and the positioning is unreliable; and the end cover is longer in size, complex in structure, high in casting difficulty and high in processing cost, the volume of the multi-way reversing valve is increased, the host is inconvenient to install, and the profit of enterprises is reduced.
Disclosure of Invention
The four-position fixed reset mechanism of the multi-way reversing valve has the advantages of simple structure, strong reset handfeel, reliable positioning, few parts and low processing cost.
In order to solve the problems, the utility model adopts the following technical scheme:
the utility model provides a reset mechanism is decided to multichannel switching-over valve four positions, includes the end cover of connecting in valve body one end, is equipped with valve pocket, preceding spring holder, reset spring, back spring holder and location steel ball in the end cover, and reset spring centre gripping is between preceding spring holder and back spring holder, and its special character is:
the valve rod outer end of the multi-way reversing valve penetrates through the valve sleeve and the positioning sleeve through clearance fit, a positioning column is arranged in the front spring seat, a connecting sleeve is inserted and clamped in the rear spring seat, two ends of the positioning column are fixedly connected with the valve rod and the connecting sleeve respectively, two positioning steel balls are arranged at two ends of a radial hole in the middle of the positioning column, and positioning springs are arranged in the radial holes and used for pushing the two positioning steel balls; one end, close to the front spring seat, of the positioning sleeve is provided with a positioning half groove for realizing positioning when the valve rod moves leftwards by one position; the middle part is equipped with a positioning groove in the position sleeve for realizing the location when valve rod left shift is located.
Preferably, the inner clamping edge is arranged at the inner middle part of the end cover, and the positioning sleeve is clamped between the valve sleeve and the inner clamping edge.
Further preferably, sealing rings are provided between one end of the valve sleeve and the valve body and between the inner wall of the valve sleeve and the valve stem, respectively.
As a further preferable mode, two ends of the positioning column are respectively provided with external threads and are fixedly connected with the valve rod and the connecting sleeve through threads.
As a further preferable mode, the outer edge of the middle part of the positioning column is in clearance fit with an inner hole of the positioning sleeve, and when the valve rod moves leftwards for two positions, the middle part of the positioning column penetrates through the positioning sleeve and is clamped at the outer end of the valve sleeve, so that the auxiliary positioning of the valve rod is realized.
The beneficial effects of the utility model are as follows:
1. because one end, close to the front spring seat, of the positioning sleeve is provided with a positioning half groove, positioning steel balls at two ends of a radial hole in the middle of the positioning column are clamped into the positioning half groove, and positioning when the valve rod moves leftwards by one position can be realized; the middle part in the positioning sleeve is provided with a positioning groove, and the positioning steel ball is clamped into the positioning groove, so that the positioning of the valve rod in the left shifting process can be realized; the valve rod can be positioned at the neutral position through the matching of the front spring seat, the return spring and the rear spring seat; the positioning of the valve rod during right movement can be realized through the matching of the connecting sleeve and the inner end of the end cover; simple structure, strong reset hand feeling, accurate positioning and reliable operation.
2. The reset mechanism is small in whole size, few in parts and low in processing cost, processing difficulty is reduced, enterprise cost is saved, and installation space is reduced.
Drawings
Fig. 1 is a schematic diagram of the structure of the original reset mechanism.
Fig. 2 is a schematic structural view of the present utility model.
Fig. 3 is a schematic diagram of the application of the present utility model.
In the figure: 1. valve body, 2, valve rod, 3, valve pocket, 4, position sleeve, 5, reference column, 6, reset spring, 7, preceding spring holder, 8, adapter sleeve, 9, back spring holder, 10, end cover, 11, location steel ball, 12, positioning spring, 401, location half groove, 402, positioning groove.
Detailed Description
As shown in fig. 2, the four-position fixed reset mechanism of the multi-way reversing valve comprises an end cover 10 fixedly connected to one end of a valve body 1 through a screw, wherein a valve sleeve 3, a positioning sleeve 4, a front spring seat 7, a reset spring 6 and a rear spring seat 9 are inserted into the end cover 10 through clearance fit, an inner clamping edge is arranged in the middle part of the end cover 10, and the positioning sleeve 4 is clamped between the valve sleeve 3 and the inner clamping edge; the return spring 6 is sandwiched between the front spring seat 7 and the rear spring seat 9.
The outer end of a valve rod 2 of the multi-way reversing valve passes through a valve sleeve 3 and a positioning sleeve 4 through clearance fit, and sealing rings are respectively arranged between one end of the valve sleeve 3 and the valve body 1 and between the inner wall of the valve sleeve 3 and the valve rod 2. The front spring seat 7 is internally provided with a positioning column 5, the rear spring seat 9 is internally inserted and clamped with a T-shaped connecting sleeve 8, two ends of the positioning column 5 are respectively provided with external threads, and the positioning column is respectively fixedly connected with the valve rod 2 and the connecting sleeve 8 through threads.
The middle part of the positioning column 5 is provided with a radial hole, positioning steel balls 11 are arranged in the radial hole, the number of the positioning steel balls 11 is two, the positioning steel balls are arranged at two ends of the radial hole, and a positioning spring 12 is arranged in the radial hole and used for pushing the two positioning steel balls 11. An arc-shaped positioning half groove 401 is formed in one end, close to the front spring seat 7, of the positioning sleeve 4 and is used for realizing positioning when the valve rod 2 moves leftwards by one position; an arc-shaped positioning groove 402 is arranged in the middle of the positioning sleeve 4 and is used for realizing the positioning when the valve rod 2 moves leftwards.
The outer edge of the middle part of the positioning column 5 is in clearance fit with the inner hole of the positioning sleeve 4, and when the valve rod 2 moves leftwards for two positions, the middle part of the positioning column 5 passes through the positioning sleeve 4 and is clamped at the outer end of the valve sleeve 3, so that the auxiliary positioning of the valve rod 2 is realized.
When in use, as shown in figure 3, the four-position fixed reset mechanism of the multi-way reversing valve is arranged on the multi-way reversing valve used for controlling the movable arm oil cylinder on the loader.
When the movable arm is required to be lifted, the valve rod 2 of the multi-way reversing valve is manually controlled to move rightwards, and meanwhile, the positioning column 5 and the front spring seat 7 are driven to compress the reset spring 6 to move rightwards until the connecting sleeve 8 is propped against the inner bottom end of the end cover 10, at the moment, the valve rod 2 reaches the maximum stroke of right movement, and oil output by the pump enters a rodless cavity of the movable arm cylinder through an oil duct in the valve body 1, so that the movable arm is lifted; when the desired height is reached, the lever handle is released and the valve stem 2 returns to its neutral position under the force of the return spring 6, stopping the boom at this position.
When the movable arm is required to descend, the valve rod 2 of the multi-way reversing valve is manually controlled to move leftwards, meanwhile, the connecting sleeve 8 and the rear spring seat 9 are driven by the positioning column 5 to compress the reset spring 6 to move leftwards until the positioning steel ball 11 enters the positioning half groove 401 at the right end of the positioning sleeve 4, the maximum resetting stroke of the leftwards moving reset spring 6 is reached, and oil output by the oil pump enters a rod cavity of the movable arm oil cylinder through an oil passage in the valve body 1, so that the movable arm descends. When the boom is lowered to a desired height, the handle for operating the valve stem 2 is released, the valve stem 2 returns to the neutral position by the return spring 6, and the boom is stopped at this position.
When the shoveling and pushing operation is needed, the valve rod 2 is manually controlled to move left, and meanwhile, the connecting sleeve 8 and the rear spring seat 9 are driven to compress the return spring 6 to move left until the positioning steel ball 11 enters the positioning half groove 401 at the right end of the positioning sleeve 4, and the movable arm cylinder is lowered until the bucket contacts the ground. Then, the control valve rod 2 is continuously controlled to move left until the positioning steel ball 11 enters the positioning groove 402 in the middle of the positioning sleeve 4, and the left shoulder of the positioning column 5 leans against the outer end of the valve sleeve 3, so that the positioning steel ball 11 is unlikely to be offside, the control handle is released, the valve rod 2 can be positioned at the moment, the valve rod 2 enters a floating position, a movable arm cylinder rod cavity and a rodless cavity are communicated with an oil return path, a loader bucket can float up and down along with the ground, and a driver can control the loader by two hands to carry out shoveling operation. After the operation is finished, the valve rod 2 can be manually controlled to move rightwards, the control handle is released after the positioning steel ball 11 is separated from the positioning groove 402 in the middle of the positioning sleeve 4, and the valve rod 2 returns to the middle position under the action of the reset spring 6.
Although embodiments of the present utility model have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the utility model would be readily apparent to those skilled in the art, and accordingly, the utility model is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (5)
1. The utility model provides a reset mechanism is decided to multichannel switching-over valve four positions, includes the end cover of connecting in valve body one end, is equipped with valve pocket, preceding spring holder, reset spring, back spring holder and location steel ball in the end cover, reset spring centre gripping before between spring holder and the back spring holder, characterized by:
the valve rod outer end of the multi-way reversing valve penetrates through the valve sleeve and the positioning sleeve through clearance fit, a positioning column is arranged in the front spring seat, a connecting sleeve is inserted and clamped in the rear spring seat, two ends of the positioning column are fixedly connected with the valve rod and the connecting sleeve respectively, two positioning steel balls are arranged at two ends of a radial hole in the middle of the positioning column, and positioning springs are arranged in the radial holes and used for pushing the two positioning steel balls; one end, close to the front spring seat, of the positioning sleeve is provided with a positioning half groove for realizing positioning when the valve rod moves leftwards by one position; the middle part is equipped with a positioning groove in the position sleeve for realizing the location when valve rod left shift is located.
2. The four-position fixed reset mechanism of the multi-way reversing valve according to claim 1, wherein the four-position fixed reset mechanism is characterized in that: an inner clamping edge is arranged in the middle of the end cover, and the positioning sleeve is clamped between the valve sleeve and the inner clamping edge.
3. The four-position fixed reset mechanism of the multi-way reversing valve according to claim 1, wherein the four-position fixed reset mechanism is characterized in that: and sealing rings are respectively arranged between one end of the valve sleeve and the valve body and between the inner wall of the valve sleeve and the valve rod.
4. The four-position fixed reset mechanism of the multi-way reversing valve according to claim 1, wherein the four-position fixed reset mechanism is characterized in that: external threads are respectively arranged at two ends of the positioning column, and the positioning column is fixedly connected with the valve rod and the connecting sleeve through threads.
5. The four-position fixed reset mechanism of the multi-way reversing valve according to claim 1 or 4, wherein the four-position fixed reset mechanism is characterized in that: the outer edge of the middle part of the positioning column is in clearance fit with an inner hole of the positioning sleeve, and when the valve rod moves leftwards for two times, the middle part of the positioning column penetrates through the positioning sleeve and is clamped at the outer end of the valve sleeve, so that the auxiliary positioning of the valve rod is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321677874.1U CN220268066U (en) | 2023-06-29 | 2023-06-29 | Four-position fixed reset mechanism of multi-way reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321677874.1U CN220268066U (en) | 2023-06-29 | 2023-06-29 | Four-position fixed reset mechanism of multi-way reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220268066U true CN220268066U (en) | 2023-12-29 |
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ID=89299069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321677874.1U Active CN220268066U (en) | 2023-06-29 | 2023-06-29 | Four-position fixed reset mechanism of multi-way reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220268066U (en) |
-
2023
- 2023-06-29 CN CN202321677874.1U patent/CN220268066U/en active Active
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