CN209129647U - A kind of reducible translating cam mechanism bottom lifting device of hydraulic support - Google Patents

Abstract

The utility model relates to a kind of reducible translating cam mechanism bottom lifting devices of hydraulic support, including pedestal and push rod, advancing jack is provided between pedestal and push rod, the front end of pedestal, which is provided with, can reset mechanical bottom raising mechanism and translating cam mechanism, it includes guide cylinder that mechanical bottom raising mechanism, which can be resetted, hydraulic motor, threaded mandrel and spring；Translating cam mechanism includes translating cam and sliding strut, and the sliding strut is slided up and down in guide cylinder by acting force of the spring.The utility model is structurally reasonable, traditional carried bottom jack is substituted to carry out lifting pan frontward end, and cam mechanism is under the action of the spring mechanism of top, bottom raising mechanism can self-resetting, structure is simple, firm, can extend the hydraulic support service life, it is frequently used existing for the bottom raising mechanism for solving existing hydraulic support, the technical problems such as the seal failure of carried bottom jack or the damages of a variety of patterns such as cylinder bottom is worn out are be easy to cause, for the prior art, are had good market prospects and development space.

Description

A kind of reducible translating cam mechanism bottom lifting device of hydraulic support

Technical field

The utility model relates to mining bracket technical field more particularly to a kind of reducible translating cams of hydraulic support Mechanism bottom lifting device.

Background technique

In coal mine work area recovery process, the pan frontward end for working surface hydraulic support often occur sink, and be easy to cause Hydraulic support can not normally move forward, and influence the advance of the face.Bottom lifting device thus is set in hydraulic support foundation front end, hydraulic It can avoid above situation when bracket base sink to occur.

Common structure is that carried bottom jack top is hinged on lift bottom ear mount lift bottom cylinder in the bottom raising mechanism of hydraulic support at present, By stretching out carried bottom jack, makes the effect of its bottom on push rod, lift pan frontward end, lead to while pan frontward end lifts Advancing jack effect realization is crossed to try to stop people from fighting each other.Lift bottom is moved frame process and is frequently used in coal mining, and carried bottom jack is be easy to cause Seal failure or a variety of patterns such as cylinder bottom is worn out damage, cause bottom lifting device to be unable to normal use.

It is structurally reasonable how one kind is designed, it is ingenious in design, traditional carried bottom jack can be substituted and carry out lifting pan frontward end, and Cam mechanism under the action of the spring mechanism of top, bottom raising mechanism can self-resetting, structure is simple, firm, can extend hydraulic branch The translating cam mechanism bottom lifting device in frame service life is current problem to be solved.

Utility model content

In order to solve frequently to use existing for the bottom raising mechanism of existing hydraulic support, it be easy to cause the sealing of carried bottom jack The damage for a variety of patterns such as failure or cylinder bottom are worn out, causes bottom lifting device to be unable to the technical problems such as normal use, this is practical new Type provides a kind of reducible translating cam mechanism bottom lifting device of hydraulic support, structurally reasonable to realize, ingenious in design, can replace In generation, traditional carried bottom jack carried out lifting pan frontward end, and cam mechanism, under the action of the spring mechanism of top, bottom raising mechanism can Self-resetting, structure is simple, firm, can extend the purpose in hydraulic support service life.

Used technical solution is the utility model to solve above-mentioned technical problem: a kind of hydraulic support is reducible Translating cam mechanism bottom lifting device, the push rod including pedestal and pushing and sliding of trying to stop people from fighting each other, it is very heavy to be provided with passage between pedestal and push rod Top, the front end of pedestal, which is provided with, can reset mechanical bottom raising mechanism and translating cam mechanism, by pushing away between the push rod and pedestal It moves jack to be coupled, the flexible drive push rod of advancing jack makees tandem movement relative to pedestal, and described resets machine Tool bottom raising mechanism includes guide cylinder, and the guide cylinder upper end is provided with hydraulic motor, guide cylinder be internally provided with threaded mandrel and Spring, the hydraulic motor are bolted to connection on the flange of guide cylinder, inside hydraulic motor head and threaded mandrel By gear engaged transmission, it is connect with guide cylinder by rectangular thread outside threaded mandrel；The rotation of the hydraulic motor drives The rotation of the rotation of the threaded mandrel engaged with its gear, the threaded mandrel realizes itself by the threaded connection with guide cylinder Moving up and down in guide cylinder；The translating cam mechanism includes translating cam and slides strut, the translating cam Bottom is welded on the top of push rod, and the top of translating cam is contacted with sliding strut, and the setting of sliding strut is in lower spring end, sliding Strut top is limited by threaded mandrel, and the upper and lower side of spring is fixedly connected with threaded mandrel and sliding strut respectively, the cunning Dynamic strut is slided up and down in guide cylinder by acting force of the spring.

Slide-and-guide item is arranged in the push rod two sides, and the slide-and-guide item controls the gap of push rod and pedestal home record, Guarantee translating cam when push rod is moved with respect to pedestal tandem and slides the point contact of strut.

The material of the translating cam is wear-resistant material, and has welding performance.

Compared with prior art, the utility model has the beneficial effects that

1) the utility model includes the push rod for including pedestal and pushing and sliding of trying to stop people from fighting each other, and passage thousand is provided between pedestal and push rod Jin top, the front end of pedestal, which is provided with, can reset mechanical bottom raising mechanism and translating cam mechanism, pass through between the push rod and pedestal Advancing jack is coupled, and the flexible drive push rod of advancing jack makees tandem movement relative to pedestal, and described resets Mechanical bottom raising mechanism includes guide cylinder, and the guide cylinder upper end is provided with hydraulic motor, and guide cylinder is internally provided with threaded mandrel And spring, the hydraulic motor are bolted to connection on the flange of guide cylinder, in hydraulic motor head and threaded mandrel Portion is connect with guide cylinder by rectangular thread by gear engaged transmission, threaded mandrel outside；The rotation band of the hydraulic motor The rotation of the rotation of the dynamic threaded mandrel engaged with its gear, the threaded mandrel is realized certainly by the threaded connection with guide cylinder Moving up and down in guide cylinder；The sliding strut is slided up and down in guide cylinder by acting force of the spring, translating cam machine Structure substitutes traditional carried bottom jack and carries out lifting pan frontward end, and structure is simple, firm, can extend making for hydraulic support bottom lifting device Use the service life；

2) the translating cam mechanism described in includes translating cam and sliding strut, and the bottom of the translating cam, which is welded on, to push away The top on the top of bar, translating cam is contacted with sliding strut, and the setting of sliding strut is slided strut top and passed through in lower spring end The limit of screw thread strut, the upper and lower side of spring are fixedly connected with threaded mandrel and sliding strut respectively；

3) material of the translating cam mechanism described in is wear-resistant material, and has welding performance；

4) slide-and-guide item is arranged in the push rod two sides described in, between the slide-and-guide item control push rod and pedestal home record Gap guarantees translating cam when push rod is moved with respect to pedestal tandem and slides the point contact of strut；

5) the utility model translating cam mechanism substitutes traditional carried bottom jack and lift pan frontward end, structure is simple, It is firm, the service life of hydraulic support bottom lifting device can be extended, solved existing for the bottom raising mechanism of existing hydraulic support frequently It uses, be easy to cause the seal failure of carried bottom jack or the damage for a variety of patterns such as cylinder bottom is worn out, cause bottom lifting device not The technical problems such as energy normal use.

Detailed description of the invention

Fig. 1 is the utility model structure diagram；

Fig. 2 is the utility model overlooking structure diagram；

Fig. 3 is the utility model translating cam structural scheme of mechanism；

Marked in the figure: 1, mechanical bottom raising mechanism, 11, guide cylinder, 12, hydraulic motor, 13, threaded mandrel, 14, bullet can be resetted Spring, 15, sliding strut, 2, pedestal, 3, push rod, 30, translating cam, 31, gib block, 4, advancing jack, 5, translating cam machine Structure.

Specific embodiment

Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing.

As shown, a kind of reducible translating cam mechanism bottom lifting device of hydraulic support, including pedestal 2 and trying to stop people from fighting each other pushes away The push rod 3 slipped is provided with advancing jack 4 between pedestal 2 and push rod 3, the front end of pedestal 2, which is provided with, can reset mechanical lift bottom Mechanism 1 and translating cam mechanism 5 are coupled between the push rod 3 and pedestal 2 by advancing jack 4, and advancing jack 4 is stretched Contracting drives push rod 3 to make tandem movement relative to pedestal 2, and the mechanical bottom raising mechanism 1 that resets includes guide cylinder 11, institute It states 11 upper end of guide cylinder and is provided with hydraulic motor 12, guide cylinder 11 is internally provided with threaded mandrel 13 and spring 14, described hydraulic Motor 12 is bolted to connection on the flange of guide cylinder 11, passes through tooth inside 12 head of hydraulic motor and threaded mandrel 13 Wheel engaged transmission, 13 outside of threaded mandrel are connect with guide cylinder 11 by rectangular thread；The rotation of the hydraulic motor 12 drives The rotation of the rotation of the threaded mandrel 13 engaged with its gear, the threaded mandrel 13 is real by the threaded connection with guide cylinder 11 Now from moving up and down in guide cylinder 11；The translating cam mechanism 5 includes translating cam 30 and sliding strut 15, institute The bottom for stating translating cam 30 is welded on the top of push rod 3, and the top of translating cam 30 is contacted with sliding strut 15, slides strut 15 settings are slided 15 top of strut and are limited by threaded mandrel 13 in 14 lower end of spring, the upper and lower side of spring 14 respectively with screw thread Mandril 13 is fixedly connected with sliding strut 15, and the sliding strut 15 is slided up and down in guide cylinder 11 by 14 active force of spring.

The above are the basic embodiments of the utility model, further can be improved, improved and limited on the basis of above Fixed: slide-and-guide item 31 is arranged in 3 two sides of push rod as mentioned, and the slide-and-guide item 31 controls between push rod 3 and 2 home record of pedestal Gap guarantees translating cam 30 when push rod 3 is moved with respect to 2 tandem of pedestal and slides the point contact of strut 15.

The above are the basic embodiments of the utility model, further can be improved, improved and limited on the basis of above Fixed: the material of translating cam 30 as mentioned is wear-resistant material, and has welding performance.

In practical application, when bracket lifts bottom, the threaded mandrel 13 is set to be in guide cylinder 11 by the effect of hydraulic motor 12 The lower limit position of rectangular thread, relative distance is smaller between 15 lower part of sliding strut and push rod 3, advancing jack 4 When elongation (when trying to stop people from fighting each other), the sliding strut 15 slides into the top of translating cam 30, slides 15 relative upward movement of strut, band It lifts dynamic 2 front end of pedestal.

When bracket is without using lift bottom, the threaded mandrel 13 is set to be in 11 rectangle spiral shell of guide cylinder by the effect of hydraulic motor 12 The extreme upper position of line, relative distance is larger between 15 lower part of sliding strut and push rod 3, when advancing jack 4 is shunk When pushing and sliding (i.e.), when the sliding strut 15 slides onto translating cam 30, sliding between strut 15 and threaded mandrel 13 still has gap, Sliding strut 15 makees unloaded linear motion, and 2 front end of pedestal is at a normal level state.

The utility model is structurally reasonable, ingenious in design, can substitute traditional carried bottom jack and carry out lifting pan frontward end, and is convex Take turns mechanism under the action of the spring mechanism of top, bottom raising mechanism can self-resetting, structure is simple, firm, can extend hydraulic support Service life frequently uses existing for the bottom raising mechanism for solving existing hydraulic support, be easy to cause carried bottom jack seal failure or The damage for a variety of patterns such as person's cylinder bottom is worn out, causes bottom lifting device to be unable to the technical problems such as normal use, for the prior art, It has good market prospects and development space.

The utility model preferred embodiment and embodiment are explained in detail above in conjunction with attached drawing, but this Utility model is not limited to the above embodiment and embodiment, within the knowledge of those skilled in the art, may be used also With various changes can be made without departing from the concept of the premise utility.

Claims (3)

1. a kind of reducible translating cam mechanism bottom lifting device of hydraulic support, pushing away including pedestal (2) and pushing and sliding of trying to stop people from fighting each other Bar (3) is provided with advancing jack (4) between pedestal (2) and push rod (3), and the front end of pedestal (2), which is provided with, can reset mechanical lift Bottom mechanism (1) and translating cam mechanism (5) are coupled between the push rod (3) and pedestal (2) by advancing jack (4), are elapsed The flexible drive push rod (3) of jack (4) makees tandem movement relative to pedestal (2), it is characterised in that: described resets Mechanical bottom raising mechanism (1) includes guide cylinder (11), and guide cylinder (11) upper end is provided with hydraulic motor (12), guide cylinder (11) It is internally provided with threaded mandrel (13) and spring (14), the hydraulic motor (12) is bolted to connection in guide cylinder (11) Flange on, by gear engaged transmission inside hydraulic motor (12) head and threaded mandrel (13), outside threaded mandrel (13) It is connect with guide cylinder (11) by rectangular thread；The rotation of the hydraulic motor (12) drives the threaded mandrel engaged with its gear (13) rotation of rotation, the threaded mandrel (13) is realized by the threaded connection with guide cylinder (11) from guide cylinder (11) moving up and down in；The translating cam mechanism (5) includes translating cam (30) and sliding strut (15), the movement The bottom of cam (30) is welded on the top of push rod (3), and the top of translating cam (30) is contacted with sliding strut (15), sliding branch Bar (15) setting is slided strut (15) top and is limited by threaded mandrel (13), above and below spring (14) in spring (14) lower end End is fixedly connected with threaded mandrel (13) and sliding strut (15) respectively, and the sliding strut (15) is existed by spring (14) active force It is slided up and down in guide cylinder (11).

2. a kind of reducible translating cam mechanism bottom lifting device of hydraulic support as described in claim 1, it is characterised in that: Slide-and-guide item (31) are arranged in push rod (3) two sides, in slide-and-guide item (31) control push rod (3) and pedestal (2) The gap of shelves guarantees that translating cam (30) connect with the point for sliding strut (15) when push rod (3) is moved with respect to pedestal (2) tandem Touching.

3. a kind of reducible translating cam mechanism bottom lifting device of hydraulic support as described in claim 1, it is characterised in that: The material of the translating cam (30) is wear-resistant material, and has welding performance.