CN204003778U - A kind of protector for sensor, oil cylinder and engineering machinery - Google Patents
A kind of protector for sensor, oil cylinder and engineering machinery Download PDFInfo
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- CN204003778U CN204003778U CN201420426630.0U CN201420426630U CN204003778U CN 204003778 U CN204003778 U CN 204003778U CN 201420426630 U CN201420426630 U CN 201420426630U CN 204003778 U CN204003778 U CN 204003778U
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- sensor
- protector
- piston
- oil cylinder
- protective tube
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Abstract
The utility model proposes a kind of protector for sensor; for the protection of sensor; sensor comprises sensor guide rod; described protector for sensor comprises the pipe box that is fixedly installed on sensor one end; described pipe box is provided with the protective tube for the protection of sensor guide rod, and described sensor guide rod can move around in protective tube.On the other hand; the utility model also proposes a kind of oil cylinder, comprises the piston in cylinder barrel and cylinder barrel, and one end of described cylinder barrel is provided with cylinder cap; described cylinder cap is provided with sensor and protector for sensor, and described protector for sensor is protector for sensor as above.The oil cylinder of this structure, owing to being provided with specially the protective gear of guard bit displacement sensor, sensor guide rod can be avoided direct the contact and friction between piston rod cavity, therefore, can effectively extend the working life of sensor.Finally, the utility model also proposes a kind of engineering machinery that comprises the sensor protective gear or oil cylinder.
Description
Technical field
The utility model relates to engineering machinery field, particularly a kind of protector for sensor, oil cylinder and engineering machinery.
Background technique
Oil cylinder is actuator comparatively conventional in hydraulic system, can be divided into piston cylinder and plunger case by its structural type.In order to control accurately the action of oil hydraulic cylinder, will detect the stroke of oil hydraulic cylinder, no matter be piston cylinder or plunger case, the most frequently used is all external stroke detection structure, device for detecting distance of travel is arranged on to oil hydraulic cylinder outside, the shortcoming of this structure is be easily collided and damage; Expose for a long time, decline because dust etc. causes testing precision, sensitivity and accuracy reduce.
Built-in sensors structure is more and more at present, but is all that the magnet ring of sensor is placed on piston rod, and guide rod is placed on cylinder cover, and piston rod drives magnet ring and guide rod relative sliding, produces position signal.The guide rod of this structure can drop away from one end of end cap under the effect of deadweight, contacts with piston rod cavity, produces wearing and tearing when relative movement, and sensor life-time is low.In the time that the stroke of oil hydraulic cylinder is far longer than the range of sensor, when piston rod stretches out, guide rod is deviate from from piston rod cavity, under Gravitative Loads, away from one end tenesmus of end cap, easily breaks guide rod when piston rod is regained again.These two problems are particularly outstanding on long stroke hydraulic cylinder
In sum, how to provide one can prevent sensor and the friction of other parts, extend the sensor protector for sensor in working life, and comprise oil cylinder and the engineering machinery of this device, become those skilled in the art to need the technical problem of solution badly.
Model utility content
In view of this, one of problem to be solved in the utility model is how to provide one can prevent sensor and the friction of other parts, extends the sensor protector for sensor in working life.
Two of problem to be solved in the utility model is how a kind of oil cylinder that comprises the sensor protective gear is provided.
Three of problem to be solved in the utility model is how a kind of engineering machinery that comprises the sensor protective gear or oil cylinder is provided.
For one of addressing the above problem; the utility model proposes a kind of protector for sensor; for the protection of sensor; sensor comprises sensor guide rod; described protector for sensor comprises the pipe box that is fixedly installed on sensor one end; described pipe box is provided with the protective tube for the protection of sensor guide rod, and described sensor guide rod can move around in protective tube.
As the improvement on the one hand of a kind of protector for sensor of the utility model, one end of described pipe box is fixedly connected with described sensor, and the other end of described pipe box is fixedly connected with one end of described protective tube.
As the improvement on the one hand of a kind of protector for sensor of the utility model, the Placement between described pipe box and described protective tube is that welding or bolt are connected.
For address the above problem two; the utility model proposes a kind of oil cylinder, comprise the piston in cylinder barrel and cylinder barrel, one end of described cylinder barrel is provided with cylinder cap; described cylinder cap is provided with sensor and protector for sensor, and described protector for sensor is the as above protector for sensor described in any one.
As the improvement on the one hand of a kind of oil cylinder of the utility model; in described cylinder barrel, be also provided with piston rod; one end of described piston rod is fixedly connected with described piston, is provided with the inner chamber of connection in described piston and described piston rod, and the protective tube of described protector for sensor is arranged in described inner chamber.
As the improvement on the one hand of a kind of oil cylinder of the utility model, in the inner chamber of described piston rod and piston, be also provided with protecting tube, in described protecting tube, be provided with cavity, described protective tube is arranged in described cavity, and described protective tube can move around in described cavity.
As the improvement on the one hand of a kind of oil cylinder of the utility model; described piston is also provided with sensor magnet ring near one end of described sensor; described sensor magnet ring is fixedly installed in the inner chamber of described piston rod, and described sensor magnet ring can move around with respect to described protective tube.
As the improvement on the one hand of a kind of oil cylinder of the utility model, described oil cylinder also comprises the first Sealing and the second Sealing, described the first Sealing is arranged between described piston and described cylinder barrel, described the second Sealing is arranged between described piston and described piston rod, and the quantity of described the first Sealing and described the second Sealing is multiple.
As the improvement on the one hand of a kind of oil cylinder of the utility model, between the protective tube of described protector for sensor and the inner chamber of described piston rod, be also provided with slide-and-guide ring.
The oil cylinder of said structure; comprise the piston in cylinder barrel and cylinder barrel; one end of cylinder barrel is provided with cylinder cap; cylinder cap is provided with sensor and protector for sensor; sensor comprises sensor guide rod; protector for sensor comprises the pipe box that is arranged at sensor one end, and pipe box is provided with the protective tube for the protection of sensor guide rod, and sensor guide rod can move around in protective tube.The oil cylinder of this structure, owing to being provided with specially the protective gear of guard bit displacement sensor, sensor guide rod can be avoided direct the contact and friction between piston rod cavity, therefore, can effectively extend the working life of sensor.
For address the above problem three, the utility model proposes a kind of engineering machinery, comprise protector for sensor described in as above any one or the as above oil cylinder described in any one.
Brief description of the drawings
The accompanying drawing that forms a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.
Fig. 1 is the structural representation of a kind of protector for sensor of the utility model and oil cylinder.
1 cylinder cap 2 sensor 3 sensor magnet rings
4 sensor guide rod 5 pipe box 6 protective tubes
7 piston rod 8 piston 9 first Sealings
10 second Sealing 11 first joint 12 hydraulic fluid ports
13 second joint 14 protecting tubes
Embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the utility model can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
Oil cylinder as shown in Figure 1, comprise cylinder barrel, and be arranged at piston 8 and the piston rod 7 in cylinder barrel, one end of piston rod 7 and piston 8 are fixing, and the left end of cylinder barrel is provided with cylinder cap 1, and cylinder cap 1 is fixedly installed on cylinder barrel, means of fixation between cylinder barrel and cylinder cap 1 can be welding, also can be for bolt connects, for convenience of dismounting, the mode that is preferably bolted is fixed.
Cylinder cap 1 is provided with sensor 2; sensor 2 is specially displacement transducer; sensor 2 comprises sensor guide rod 4; sensor guide rod 4 is a comparatively elongated rod-like members; in cylinder barrel, be provided with the protector for sensor for the protection of sensor 2, protector for sensor specifically comprises the pipe box 5 that is arranged at sensor 2 one end, and pipe box 5 is provided with the protective tube 6 for the protection of sensor guide rod 4; protective tube 6 is the blank pipe of a hollow, and sensor guide rod 4 can move around in protective tube 6.
In technique scheme, the left end of pipe box 5 is fixedly connected with sensor 2, and the right-hand member of pipe box 5 is fixedly connected with the left end of protective tube 6, and particularly, the Placement between pipe box 5 and protective tube 6 is that welding or bolt are connected.
In order to protect preferably sensor guide rod 4; the inner center of piston 8 of cylinder barrel is provided with inner chamber; the center, inside of piston rod 7 is also provided with inner chamber; the inner chamber of piston 8 is communicated with the inner chamber of piston rod 7; the protective tube 6 of protector for sensor is arranged in inner chamber, and protective tube 6 is through piston 8 and piston rod 7.
It should be noted that, in the inner chamber of piston rod 7 and piston 8, protecting tube 14 can also be set, protecting tube 14 is fixedly connected with the inner chamber of piston rod 7 with piston 8, and protective tube 6 is arranged in protecting tube 14, and can in protecting tube 14, move left and right.
In technique scheme, sensor 2 specifically also comprises sensor magnet ring 3, sensor magnet ring 3 is specifically fixedly installed in the inner chamber of piston rod 7, and sensor magnet ring 3 can move relative to sensor guide rod 4, and sensor magnet ring 3 is specifically for the displacement amount of detecting sensor guide rod 4.In working procedure, in the time that piston rod 7 moves, band dynamic sensor magnet ring 3 moves, and sensor guide rod 4 and protective tube 6 are relatively fixing, and the displacement amount of sensor magnet ring 3 is the displacement amount of sensor guide rod 4.
For ensureing the sealing between piston 8 and cylinder barrel, between piston 8 and cylinder barrel, be also provided with the first Sealing 9, particularly, the face that piston 8 contacts with cylinder barrel is provided with seal groove, and the first Sealing 9 is arranged in seal groove, and the first Sealing 9 is specifically as follows seal ring, its material is preferably rubber, for ensureing sealing effect, the quantity of seal groove is multiple for being preferably, and a seal ring is all set in each seal groove.The sectional shape of seal ring can be circular, can be square, certainly, can also be other irregular shape, does not do concrete restriction at this.
Similarly, for ensureing the sealing between piston 8 and piston rod 7, between piston 8 and piston rod 7, be also provided with the second Sealing 10, particularly, piston rod 7 is provided with seal groove with the face that piston 8 contacts, and the second Sealing 10 is arranged in seal groove, and the structure of the second Sealing 10 can be consistent with the structure of the first Sealing 9, for ensureing sealing effect, its quantity can be also multiple.
In technique scheme, because the length of protective tube 6 is enough, therefore, even in the time that piston rod 7 stretches out completely, protective tube 6 also can not depart from the inner chamber of piston rod 7.It should be noted that, in order to reduce the friction between protective tube 6 and piston rod 7 inner chambers, in one embodiment, can also between protective tube 6 and the inner chamber of piston rod 7, slide-and-guide ring be set.
Further, piston 8 is divided into two-part cylinder barrel, as shown in fig. 1, left end is rodless cavity, and right-hand member is rod chamber, move left and right in cylinder barrel for promoting piston 8, the two ends of cylinder barrel are equipped with hydraulic fluid port 12, correspond respectively to one end of rodless cavity and one end of rod chamber, in the time of hydraulic fluid port 12 oil-feed on rodless cavity, promote piston 8 and move right, hydraulic fluid port 12 oil returns on rod chamber.On the contrary, in the time of hydraulic fluid port 12 oil-feed on rod chamber, promote piston 8 and be moved to the left, hydraulic fluid port 12 oil returns on rodless cavity.
In addition, for the means of fixation between piston 8 and piston rod 7, be convenient disassembly, can adopt the bolt connecting mode shown in Fig. 1.Can certainly adopt the Placements such as welding.It should be noted that, for preventing suppressing cylinder phenomenon between piston 8 and piston rod 7, between piston 8 and piston rod 7, also can adopt floating connection mode, specifically can be hinged by bearing pin, technological scheme can, with reference to existing and improvement project, be not described in detail in this.
Piston rod 7 can be integral type, also can be set to two-part, as shown in fig. 1, the left side is the first portion of piston rod 7, the right is the second portion of piston rod 7, and first portion is connected by the first joint 11 with second portion, between two-part, preferably connects by welding manner.
In technique scheme, the sectional shape of protecting tube 14 can be ring, can also be round outside but spuare inside shape, or other shape.The two ends of protecting tube 14 are connected with piston rod 7 inner chambers by the second joint 13, and Placement is preferably welding, can also be other Placement, does not do concrete restriction at this.
The oil cylinder of said structure, being arranged at in-oil cylinder protective tube 6 can lengthen arbitrarily, is not subject to the effect length of sensor guide rod 4, therefore, can protect preferably sensor guide rod 4, prevents that it from being clashed into by piston rod 7 ends., because sensor guide rod 4 can better be protected, do not rub with other component, therefore, its life-span and reliability can effectively improve meanwhile.
On the other hand, the utility model also proposes a kind of engineering machinery, and particularly, engineering machinery specifically comprises protector for sensor as above or oil cylinder as above.The type of engineering machinery can be varied, and the engineering machinery of all use the sensor protective gears or oil cylinder, all in protection domain of the present utility model.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a protector for sensor; for the protection of sensor (2); sensor (2) comprises sensor guide rod (4); it is characterized in that; described protector for sensor comprises the pipe box (5) that is fixedly installed on sensor (2) one end; described pipe box (5) is provided with the protective tube (6) for the protection of sensor guide rod (4), and described sensor guide rod (4) can move around in protective tube (6).
2. protector for sensor according to claim 1; it is characterized in that; one end of described pipe box (5) is fixedly connected with described sensor (2), and the other end of described pipe box (5) is fixedly connected with one end of described protective tube (6).
3. protector for sensor according to claim 1, is characterized in that, the Placement between described pipe box (5) and described protective tube (6) is that welding or bolt are connected.
4. an oil cylinder; comprise the piston (8) in cylinder barrel and cylinder barrel; one end of described cylinder barrel is provided with cylinder cap (1); it is characterized in that; described cylinder cap (1) is provided with sensor (2) and protector for sensor, and described protector for sensor is the protector for sensor described in any one in claims 1 to 3.
5. oil cylinder according to claim 4; it is characterized in that; in described cylinder barrel, be also provided with piston rod (7); one end of described piston rod (7) is fixedly connected with described piston (8); in described piston (8) and described piston rod (7), be provided with the inner chamber of connection, the protective tube (6) of described protector for sensor is arranged in described inner chamber.
6. oil cylinder according to claim 5; it is characterized in that; in the inner chamber of described piston rod (7) and piston (8), be also provided with protecting tube (14); described protecting tube is provided with cavity in (14); described protective tube (6) is arranged in described cavity, and described protective tube (6) can move around in described cavity.
7. oil cylinder according to claim 6; it is characterized in that; described piston (8) is also provided with sensor magnet ring (3) near one end of described sensor (2); described sensor magnet ring (3) is fixedly installed in the inner chamber of described piston rod (7), and described sensor magnet ring (3) can move around with respect to described protective tube (6).
8. oil cylinder according to claim 7, it is characterized in that, described oil cylinder also comprises the first Sealing (9) and the second Sealing (10), described the first Sealing (9) is arranged between described piston (8) and described cylinder barrel, described the second Sealing (10) is arranged between described piston (8) and described piston rod (7), and the quantity of described the first Sealing (9) and described the second Sealing (10) is multiple.
9. according to arbitrary described oil cylinder in claim 5 to 8, it is characterized in that, between the protective tube (6) of described protector for sensor and the inner chamber of described piston rod (7), be also provided with slide-and-guide ring.
10. an engineering machinery, is characterized in that, described engineering machinery comprises the oil cylinder described in any one in the protector for sensor described in any one in claims 1 to 3 or claim 4 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420426630.0U CN204003778U (en) | 2014-07-30 | 2014-07-30 | A kind of protector for sensor, oil cylinder and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420426630.0U CN204003778U (en) | 2014-07-30 | 2014-07-30 | A kind of protector for sensor, oil cylinder and engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204003778U true CN204003778U (en) | 2014-12-10 |
Family
ID=52043785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420426630.0U Expired - Fee Related CN204003778U (en) | 2014-07-30 | 2014-07-30 | A kind of protector for sensor, oil cylinder and engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204003778U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165171A (en) * | 2014-07-30 | 2014-11-26 | 三一重工股份有限公司 | Sensor protecting device, oil cylinder and engineering machine |
| CN108150482A (en) * | 2017-12-14 | 2018-06-12 | 陕西昆仑机械装备制造有限责任公司 | Self-adapting type reciprocating movement oil cylinder control method |
| CN114321087A (en) * | 2021-12-30 | 2022-04-12 | 江苏华林气动液压成套设备有限公司 | Follow-up hydraulic cylinder |
-
2014
- 2014-07-30 CN CN201420426630.0U patent/CN204003778U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165171A (en) * | 2014-07-30 | 2014-11-26 | 三一重工股份有限公司 | Sensor protecting device, oil cylinder and engineering machine |
| CN108150482A (en) * | 2017-12-14 | 2018-06-12 | 陕西昆仑机械装备制造有限责任公司 | Self-adapting type reciprocating movement oil cylinder control method |
| CN108150482B (en) * | 2017-12-14 | 2019-08-23 | 陕西昆仑机械装备制造有限责任公司 | Self-adapting type reciprocating movement oil cylinder control method |
| CN114321087A (en) * | 2021-12-30 | 2022-04-12 | 江苏华林气动液压成套设备有限公司 | Follow-up hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160108 Address after: 417100 No. 11 Ping Street, industrial park, Loudi economic and Technological Development Zone, Hunan, China Patentee after: Loudi Zhongxing Hydraulic Fittings Co., Ltd. Address before: 102206 building 6, building 8, 5 North Qing Road, Beijing, Changping District Patentee before: Sanyi Heavy Industry Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20180730 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |