CN218058265U

CN218058265U - Jack and hydraulic support

Info

Publication number: CN218058265U
Application number: CN202222064497.6U
Authority: CN
Inventors: 关闯; 姜仁坤; 刘贤斌
Original assignee: Sany Heavy Equipment Co Ltd
Current assignee: Sany Heavy Equipment Co Ltd
Priority date: 2022-08-08
Filing date: 2022-08-08
Publication date: 2022-12-16
Anticipated expiration: 2032-08-08

Abstract

The utility model provides a jack and hydraulic support. The jack comprises a cylinder body, a piston rod, a base and a displacement detection assembly; the cylinder body is internally provided with a first cavity; the piston rod is positioned in the first cavity and can reciprocate in the first cavity; the base is connected with the cylinder body and is positioned at one end of the first cavity; the displacement detection assembly is arranged on the base and/or the piston rod and can detect the height of the piston rod extending out of the cylinder body. The piston rod extending height is detected through the displacement detection assembly, so that when the jack lifts the hydraulic support, the lifting height of the hydraulic support can be detected, the potential safety hazard caused by support inclination due to too high lifting can be avoided, the lifting height of the hydraulic support is controlled, a non-full-stroke rack can be realized, the rack can be moved, and the rack moving efficiency is improved.

Description

Jack and hydraulic support

Technical Field

The utility model relates to a combine and adopt equipment technical field, concretely relates to jack and hydraulic support.

Background

At present, in the related art, in the process of moving the hydraulic support, the front end of the base is usually lifted by using the thrust of the bottom lifting jack, and then the hydraulic support is moved by pushing the bottom lifting jack. The lifting jack can reduce the resistance of moving the frame and improve the efficiency of moving the frame, but the lifting height of the lifting jack is too high for the working surface with more complex conditions of the bottom plate, so that the inclination angle of the hydraulic support on the working surface is larger, and the hydraulic support is toppled.

SUMMERY OF THE UTILITY MODEL

The present invention aims at least solving one of the technical problems existing in the prior art or the related art.

To this end, a first aspect of the present invention provides a jack.

The second aspect of the utility model provides a hydraulic support.

In view of this, the present invention provides a jack, including a cylinder, a piston rod, a base and a displacement detecting assembly; the cylinder body is internally provided with a first cavity; the piston rod is positioned in the first cavity and can reciprocate in the first cavity; the base is connected with the cylinder body and is positioned at one end of the first cavity; the displacement detection assembly is arranged on the base and/or the piston rod and can detect the height of the piston rod extending out of the cylinder body.

In this technical scheme, the jack includes cylinder body, piston rod, base and displacement detection subassembly. The cylinder body is internally provided with a first cavity, and the piston rod is positioned in the first cavity so as to realize the installation of the piston rod. The piston rod can reciprocate in the first cavity to make the piston rod drive hydraulic support's bottom plate, thereby drive hydraulic support motion. The base is connected with the cylinder body and is located at one end of the first cavity body so as to install the base and the cylinder body together. The displacement detection assembly is arranged on the base and/or the piston rod, the height of the piston rod extending out of the cylinder body can be detected, the extending height of the piston rod is detected through the displacement detection assembly, and therefore when the jack lifts the hydraulic support, the height of lifting the hydraulic support can be detected, potential safety hazards caused by support inclination due to the fact that the lifting frame is too high can be avoided, the lifting height of the hydraulic support is controlled, a non-full-stroke rack can be achieved, the moving frame is moved, and moving efficiency is improved.

The lifting height of the hydraulic support is detected by the displacement detection assembly, so that the jack has the function of lifting height detection, and the lifting height can be controlled by controlling the movable stroke of a piston rod of the jack. And then can be when placing the relatively complicated working face of hydraulic support's bottom plate condition, control hydraulic support lift the operation at the bottom to avoid lifting the too high condition that causes the relatively big circumstances of working face hydraulic support inclination of height, prevent to take place the potential safety hazard.

Additionally, the utility model provides an among the above-mentioned technical scheme jack can also have following additional technical characteristics:

in one technical solution of the present invention, the piston rod is provided with a second cavity along the moving direction, and the opening of the second cavity faces the base; the displacement detection assembly comprises a magnetic part, a detection part and a measuring rod; the magnetic part is arranged on the piston rod; the detection component is arranged in the base; one end of the measuring rod is connected with the detection part, the other end of the measuring rod is located in the second cavity, the measuring rod penetrates through the magnetic part, and the piston rod can drive the magnetic part to move relative to the measuring rod.

In the technical scheme, the piston rod is provided with a second cavity along the movement direction, one end of the second cavity is positioned inside the piston rod, the other end of the second cavity is provided with an opening, and the opening of the second cavity is arranged towards the base. The displacement detection assembly comprises a magnetic part, a detection part and a measuring rod, and the magnetic part is arranged on the piston rod to realize the installation of the magnetic part. The detection component is arranged in the base to realize the installation and fixation of the detection component. One end of the measuring rod is connected with the detection part, and the other end of the measuring rod is located in the second cavity body so as to realize the installation and fixation of the measuring rod. The measuring rod penetrates through the magnetic part, so that the magnetic part is located in the circumferential direction of the measuring rod, the piston rod can drive the magnetic part to move relative to the measuring rod, the magnetic part can move relative to the measuring rod, and therefore when the magnetic part moves relative to the measuring rod, the detection part can generate corresponding earth electric signals according to the moving distance of the magnetic part, and therefore the moving distance of the piston rod can be detected.

In one technical scheme of the utility model, a first groove is arranged at one end of the piston rod close to the base, and the magnetic part is positioned in the first groove; the jack further comprises a first connecting piece, the outer wall of the first connecting piece is connected with the inner wall of the first groove, the first connecting piece is located on one side, close to the base, of the magnetic piece, and the first connecting piece is abutted to the magnetic piece.

In this technical scheme, the piston rod is provided with first recess near the one end of base, and the magnetic part is located first recess to the realization is installed the magnetic part in the piston rod. The jack still includes first connecting piece, the outer wall of first connecting piece is connected with the inner wall of first recess, and then can fix first connecting piece in first recess, first connecting piece is located the one side that the magnetic part is close to the base, and support and lean on in the magnetic part, thereby fix the magnetic part locking in first recess through first connecting piece, it is spacing to realize carrying on the removal of magnetic part, and then guarantee that the magnetic part can follow the piston rod and carry out the while and move, thereby guarantee the detection precision of detecting element to piston rod motion distance, guarantee the accuracy that detects piston rod motion distance.

In one technical scheme of the utility model, a second groove is arranged on one side of the base close to the piston rod, and the detection part is positioned in the second groove; the jack also comprises a second connecting piece, the outer wall of the second connecting piece is connected with the inner wall of the second groove, and the outer wall of the second connecting piece is abutted against the detection part.

In this technical scheme, the base is provided with the second recess near one side of piston rod, and the detection part is located the second recess to the realization is installed the detection part in the base. The jack still includes the second connecting piece, the outer wall of second connecting piece is connected with the inner wall of second recess, and then can fix the second connecting piece on the inner wall of second recess, the second connecting piece supports and leans on in the sense part, thereby make the second connecting piece can fix the sense part locking in the second recess, in order to realize the installation to the sense part, thereby can avoid measuring staff and sense part to take place to remove and produce the influence to the precision that detects, in order to guarantee that the sense part can produce accurate signal of telecommunication, promote the accuracy that detects piston rod movement distance.

In one technical solution of the present invention, a third cavity is provided in the base, the third cavity is communicated with the second groove, and an opening of the third cavity is located on a side of the base away from the piston rod; the jack also comprises a first sealing element which blocks the opening of the third cavity.

In the technical scheme, the third cavity is arranged in the base and communicated with the second groove, the opening of the third cavity is positioned on one side, far away from the piston rod, of the base, and then the detection component in the third groove can be maintained and replaced through the opening of the third cavity, so that the structure is simpler, and the detection component can be operated more conveniently and quickly. The jack still includes first sealing member, and first sealing member shutoff is in the opening of third cavity, and then seals the third cavity when the jack carries out the during operation, avoids external dust and impurity etc. to enter into the third cavity and produce the influence to the test element to guarantee the detection precision of test element.

In one technical scheme of the utility model, a first channel is arranged on the side wall of the base and is communicated with a third cavity; the displacement detection assembly further comprises a cable, one end of the cable is connected with the detection component, the cable penetrates through the third cavity and the first channel, and the other end of the cable is located outside the side wall.

In the technical scheme, a first channel is arranged on the side wall of the base and communicated with the third cavity, so that the first channel can be communicated with the third cavity and the outside of the side wall of the base. The displacement detection assembly further comprises a cable, one end of the cable is connected with the detection component, so that the cable can supply power to the detection component, when the piston rod moves, the detection component can generate a corresponding earth electric signal, and therefore the detection of the moving distance of the piston rod is achieved. The cable is arranged in the third cavity and the first channel in a penetrating mode, and the other end of the cable is located outside the side wall, so that installation space is provided for arrangement of the cable.

In one technical scheme of the utility model, a third groove is arranged on the outer wall of the first sealing element, and the third groove is arranged along the circumferential direction of the first sealing element; the jack also comprises a second sealing element which is positioned in the third groove and is arranged along the circumferential direction of the first sealing element.

In this technical scheme, be provided with the third recess on the outer wall of first sealing member, the third recess sets up along the circumference of first sealing member, is provided with annular recess on the outer wall of first sealing member promptly. The second sealing member is located the third recess, sets up along the circumference of first sealing member, and first sealing member can seal the third cavity after the installation promptly to isolated third cavity and external world, thereby can further seal the opening of third cavity.

In one technical solution of the present invention, the jack further includes a first mounting portion, a second mounting portion, a through pipe and a socket; the first mounting part is arranged on the outer wall of the base, and is provided with a fourth cavity communicated with the first channel; the second mounting part is arranged on the outer wall of the cylinder body; one end of the through pipe is connected with the first mounting part, and the other end of the through pipe is connected with the second mounting part; the socket is arranged on the second mounting part; the cable is arranged on the first installation part and the through pipe in a penetrating mode, and the other end of the cable is connected with the socket.

In this technical scheme, the jack still includes first installation department, second installation department, through-wire pipe and socket. The first installation part is arranged on the outer wall of the base so as to realize the installation and fixation of the first installation part. The first installation part is provided with a fourth cavity which is communicated with the first channel, so that the cable can penetrate through the first installation part conveniently. The second installation department sets up in the outer wall of cylinder body to the realization is to the installation of second installation department and fixed. The one end of spool is connected with first installation department, and the other end is connected with the second installation department to the realization makes and then can protect the cable in the outside of base and cylinder body through setting up the spool with fixed to the installation of spool. The socket sets up in the second installation department to the realization is to the installation of socket with fixed, thereby is convenient for install the socket. The other end of the cable is connected with the socket, so that the socket can supply power for the detection component through the cable, and meanwhile, the socket can also receive an electric signal generated by the detection component.

The utility model discloses an among the technical scheme, the jack still includes first casing, and one side that piston rod was kept away from to first casing and base is connected.

In this technical scheme, the jack still includes first casing, and first casing is connected with one side that the piston rod was kept away from to the base to the realization is to the installation of first casing and fixed, makes first casing can protect the one side that the piston rod was kept away from to the base, avoids the base to keep away from one side of piston rod and takes place to damage.

The utility model discloses the second aspect provides a hydraulic support, jack among the above-mentioned arbitrary technical scheme, consequently, this hydraulic support possesses whole beneficial effect of jack.

In this technical scheme, hydraulic support includes the jack, and the jack includes cylinder body, piston rod, base and displacement detection subassembly. The cylinder body is internally provided with a first cavity, and the piston rod is positioned in the first cavity so as to realize the installation of the piston rod. The piston rod can reciprocate in the first cavity to make the piston rod drive the bottom plate of the hydraulic support, and therefore the hydraulic support is driven to move. The base is connected with the cylinder body and is located at one end of the first cavity, so that the base and the cylinder body are installed together. The displacement detection assembly is arranged on the base and/or the piston rod, the height of the piston rod extending out of the cylinder body can be detected, the extending height of the piston rod is detected through the displacement detection assembly, and therefore when the jack lifts the hydraulic support, the height of lifting the hydraulic support can be detected, potential safety hazards caused by support inclination due to the fact that the lifting frame is too high can be avoided, the lifting height of the hydraulic support is controlled, a non-full-stroke rack can be achieved, the moving frame is moved, and moving efficiency is improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows a schematic structural view of a jack according to an embodiment of the present invention;

fig. 2 shows a schematic structural view of a piston rod according to an embodiment of the invention;

fig. 3 shows a schematic structural view of a base according to an embodiment of the present invention;

fig. 4 shows a partial schematic view of a base according to an embodiment of the invention;

fig. 5 shows a schematic structural diagram of a vent tube according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 5 is:

100 jack, 102 cylinder, 1024 first cavity, 104 piston rod, 1042 second cavity, 1044 first groove, 106 base, 1062 second groove, 1064 third cavity, 1066 first channel, 108 displacement detection component, 1082 magnetic element, 1084 detection component, 1086 measuring rod, 1088 cable, 110 first connecting element, 1102 third groove, 112 second connecting element, 114 first sealing element, 116 second sealing element, 118 first mounting portion, 120 fourth cavity, 122 second mounting portion, 124 through pipe, 126 socket, 128 first housing.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The jack 100 and the hydraulic bracket according to some embodiments of the present embodiment are described below with reference to fig. 1 to 5.

As shown in fig. 1 and fig. 2, in a first aspect, the present embodiment provides a jack 100, which includes a cylinder 102, a piston rod 104, a base 106, and a displacement detecting assembly 108; the cylinder 102 has a first cavity 1024 therein; the piston rod 104 is located in the first cavity 1024 and can reciprocate in the first cavity 1024; the base 106 is connected with the cylinder 102 and is located at one end of the first cavity 1024; the displacement detecting assembly 108 is disposed on the base 106 and/or the piston rod 104, and is capable of detecting a height of the piston rod 104 extending out of the cylinder 102.

In this embodiment, jack 100 includes cylinder 102, piston rod 104, base 106, and displacement sensing assembly 108. The cylinder 102 has a first cavity 1024 therein, and the piston rod 104 is located in the first cavity 1024 to achieve the installation of the piston rod 104. The piston rod 104 is capable of reciprocating within the first cavity 1024 so that the piston rod 104 can drive the bottom plate of the hydraulic mount, thereby driving the hydraulic mount in motion. The base 106 is coupled to the cylinder 102 at one end of the first cavity 1024 to enable the base 106 to be mounted with the cylinder 102. Displacement detection subassembly 108 sets up in base 106 and/or piston rod 104, can detect the height that piston rod 104 stretches out cylinder body 102, detect piston rod 104's the protrusion height through displacement detection subassembly 108, thereby when jack 100 lifts the end to hydraulic support, can detect the height that hydraulic support lifted up, and then can avoid lifting the potential safety hazard that the support slope arouses because of lifting the frame height, through lifting the height to hydraulic support and controlling, can realize non-full stroke rack, move the frame, improve and move a efficiency.

The lifting height of the hydraulic support is detected by arranging the displacement detection assembly 108, so that the jack 100 has the function of detecting the lifting height, and the lifting height can be controlled by controlling the movable stroke of the piston rod 104 of the jack 100. And then can be when placing the relatively complicated working face of hydraulic support's bottom plate condition, control hydraulic support lift the operation at the bottom to avoid lifting the too high condition that causes the relatively big circumstances of working face hydraulic support inclination of height, prevent to take place the potential safety hazard.

Specifically, the bottom lifting height detection of the bottom lifting jack 100 can be realized by feeding back a signal through the movement of the piston rod 104 by using the displacement detection assembly 108.

Specifically, the displacement sensing component 108 is a displacement sensor.

Specifically, the displacement detection assembly 108 is disposed on the base 106.

Specifically, the displacement detection assembly 108 is disposed on the piston rod 104.

Specifically, displacement sensing assembly 108 is disposed on base 106 and piston rod 104.

Specifically, when the jack 100 works, hydraulic oil moves in an oil inlet cavity (not shown in the figure) and an oil discharge cavity (not shown in the figure) of the jack 100, so that the piston rod 104 of the jack 100 can be ejected and dropped, and then the hydraulic support can be lifted and dropped, so that the support moving is realized.

The present embodiment provides a jack 100, and in addition to the technical features of the above embodiments, the present embodiment further includes the following technical features.

As shown in fig. 1 and 2, the piston rod 104 is provided with a second cavity 1042 along the moving direction, and the opening of the second cavity 1042 faces the base 106; the displacement detecting assembly 108 includes a magnetic member 1082, a detecting member 1084 and a measuring rod 1086; the magnetic member 1082 is disposed on the piston rod 104; the detecting part 1084 is disposed in the base 106; one end of the measuring rod 1086 is connected to the detecting member 1084, the other end of the measuring rod 1086 is located in the second cavity 1042, the measuring rod 1086 is disposed in the magnetic member 1082 in a penetrating manner, and the piston rod 104 can drive the magnetic member 1082 to move relative to the measuring rod 1086.

In this embodiment, the piston rod 104 is provided with a second cavity 1042 along the moving direction, one end of the second cavity 1042 is located inside the piston rod 104, the other end of the second cavity 1042 has an opening, and the opening of the second cavity 1042 is disposed toward the base 106. The displacement detecting assembly 108 includes a magnetic member 1082, a detecting member 1084 and a measuring rod 1086, wherein the magnetic member 1082 is disposed on the piston rod 104 to implement the mounting of the magnetic member 1082. The detecting part 1084 is disposed in the base 106 to implement mounting and fixing of the detecting part 1084. One end of the measuring rod 1086 is connected to the detecting component 1084, and the other end of the measuring rod 1086 is disposed in the second cavity 1042, so as to install and fix the measuring rod 1086. The measuring rod 1086 is disposed through the magnetic member 1082, so that the magnetic member 1082 is located in the circumferential direction of the measuring rod 1086, the piston rod 104 can drive the magnetic member 1082 to move relative to the measuring rod 1086, so that the magnetic member 1082 can move relative to the measuring rod 1086, and when the magnetic member 1082 moves relative to the measuring rod 1086, the detecting member 1084 can generate a corresponding electrical signal according to the moving distance of the magnetic member 1082, so as to detect the moving distance of the piston rod 104.

Specifically, when the lifting jack 100 lifts the hydraulic support, one end of the piston rod 104, which is far away from the base 106, lifts the bottom plate of the hydraulic support, so that the hydraulic support can be lifted, when the piston rod 104 moves in the first cavity 1024, the magnetic member 1082 and the piston rod 104 move simultaneously, so that the magnetic member 1082 can move relative to the measuring bar 1086, so that the magnetic member 1082 can be located at different positions of the piston rod 104, which enables the measuring bar 1086 to sense the magnetic member 1082, so that the detecting member 1084 generates different voltage signals or current signals, so as to detect the moving distance of the piston rod 104 according to the different voltage signals or current signals, thereby detecting the lifting height of the hydraulic support.

As shown in fig. 1 and 2, a first groove 1044 is disposed at an end of the piston rod 104 close to the base 106, and the magnetic member 1082 is located in the first groove 1044; the jack 100 further includes a first connector 110, an outer wall of the first connector 110 is connected to an inner wall of the first recess 1044, and is located on a side of the magnetic member 1082 close to the base 106, and abuts against the magnetic member 1082.

In this embodiment, the end of the piston rod 104 near the base 106 is provided with a first groove 1044, and the magnetic member 1082 is located in the first groove 1044, so as to realize the installation of the magnetic member 1082 in the piston rod 104. Jack 100 still includes first connecting piece 110, the outer wall of first connecting piece 110 is connected with the inner wall of first recess 1044, and then can fix first connecting piece 110 in first recess 1044, first connecting piece 110 is located the one side that magnetic part 1082 is close to base 106, and support and lean on in magnetic part 1082, thereby fix magnetic part 1082 locking in first recess 1044 through first connecting piece 110, it is spacing to realize carrying on the removal to magnetic part 1082, and then guarantee that magnetic part 1082 can follow piston rod 104 and carry out the while and move, thereby guarantee to detect the detection precision of part 1084 to piston rod 104 movement distance, guarantee the accuracy that detects piston rod 104 movement distance.

Specifically, an internal thread is provided on an inner wall of the first groove 1044, the first connector 110 is a first nut, and the first nut is installed at a position where the first groove 1044 is provided with the internal thread, so that stability of connection between the first connector 110 and the first groove 1044 can be further enhanced, and thus the magnetic member 1082 in the first groove 1044 can be further locked and fixed.

Specifically, the magnetic member 1082 has a ring shape.

As shown in fig. 1 and 3, a second groove 1062 is disposed on a side of the base 106 close to the piston rod 104, and the detecting part 1084 is located in the second groove 1062; the jack 100 further includes a second connector 112, and an outer wall of the second connector 112 is connected to an inner wall of the second groove 1062 and abuts against the detecting member 1084.

In this embodiment, a side of the base 106 adjacent to the piston rod 104 is provided with a second recess 1062, and the detecting member 1084 is located in the second recess 1062, so as to realize the installation of the detecting member 1084 in the base 106. Jack 100 still includes second connecting piece 112, the outer wall of second connecting piece 112 is connected with the inner wall of second recess 1062, and then can fix second connecting piece 112 on the inner wall of second recess 1062, second connecting piece 112 supports and leans on in detecting element 1084, thereby make second connecting piece 112 can fix detecting element 1084 locking in second recess 1062, in order to realize the installation to detecting element 1084, thereby can avoid measuring staff 1086 and detecting element 1084 to take place to remove and produce the influence to the precision that detects, in order to guarantee that detecting element 1084 can produce accurate signal of telecommunication, promote the accuracy that detects piston rod 104 movement distance.

Specifically, an internal thread is provided on an inner wall of the second recess 1062, the second connector 112 is a second nut, and the second nut is mounted at a position where the internal thread is provided in the second recess 1062, so as to enhance stability of connection between the second connector 112 and the second recess 1062, and further lock and fix the detecting part 1084 in the second recess 1062.

As shown in fig. 1 and 3, the base 106 has a third cavity 1064 therein, the third cavity 1064 is communicated with the second groove 1062, and an opening of the third cavity 1064 is located on a side of the base 106 away from the piston rod 104; the jack 100 further includes a first seal 114, and the first seal 114 blocks the opening of the third cavity 1064.

In this embodiment, the base 106 has a third cavity 1064 therein, the third cavity 1064 is communicated with the second recess 1062, and an opening of the third cavity 1064 is located on a side of the base 106 away from the piston rod 104, so that the detecting component 1084 in the third recess 1102 can be repaired and replaced through the opening of the third cavity 1064, the structure is simpler, and the operation of the detecting component 1084 is more convenient and faster. The jack 100 further comprises a first sealing element 114, the first sealing element 114 is plugged in the opening of the third cavity 1064, and then the third cavity 1064 is sealed when the jack 100 works, so that external dust, impurities and the like are prevented from entering the third cavity 1064 to influence the detection component 1084, and the detection precision of the detection component 1084 is ensured.

Specifically, an annular protrusion is arranged on an inner wall at an opening of the third cavity 1064, and the first sealing element 114 may be clamped on the annular protrusion, so as to plug the opening of the third cavity 1064.

Specifically, the first sealing element 114 is a plug screw, and the plug screw is made of a non-metal polymer material, such as polyoxymethylene; when the jack 100 is used in a coal mine, the underground environment is humid, if the opening of the third cavity 1064 is sealed by a metal sealing element, the metal sealing element is easily rusted under long-time action, and is connected with the base 106, so that the jack is difficult to disassemble. Through the first sealing member 114 that adopts non-metallic material, avoid dismantling the difficulty because of the screw thread corrosion after to be convenient for open the opening of third cavity 1064 and carry out the dismouting to displacement detection part 1084.

As shown in fig. 1 and 3, a first channel 1066 is disposed on a side wall of the base 106, and the first channel 1066 is communicated with the third cavity 1064; the displacement detecting assembly 108 further includes a cable 1088, one end of the cable 1088 is connected to the detecting component 1084, the cable 1088 is disposed through the third cavity 1064 and the first channel 1066, and the other end of the cable 1088 is located outside the sidewall.

In this embodiment, a first channel 1066 is disposed on a side wall of the base 106, and the first channel 1066 is in communication with the third cavity 1064, so that the first channel 1066 can communicate the third cavity 1064 with the outside of the side wall of the base 106. The displacement detecting assembly 108 further includes a cable 1088, and one end of the cable 1088 is connected to the detecting component 1084, so that the cable 1088 can supply power to the detecting component 1084, so that when the piston rod 104 moves, the detecting component 1084 can generate a corresponding electrical signal, thereby detecting the moving distance of the piston rod 104. The cable 1088 is inserted through the third cavity 1064 and the first channel 1066, and the other end of the cable 1088 is located outside the sidewall, so as to provide an installation space for the cable 1088 to be arranged.

As shown in fig. 1 and 4, a third groove 1102 is provided on the outer wall of the first seal 114, and the third groove 1102 is provided along the circumferential direction of the first seal 114; the jack 100 further includes a second seal 116, the second seal 116 being located within the third groove 1102, circumferentially of the first seal 114.

In this embodiment, a third groove 1102 is provided on the outer wall of the first seal 114, and the third groove 1102 is provided along the circumferential direction of the first seal 114, that is, an annular groove is provided on the outer wall of the first seal 114. The second sealing element 116 is disposed in the third groove 1102 and along the circumference of the first sealing element 114, that is, the first sealing element 114 can seal the third cavity 1064 after being installed, so as to isolate the third cavity 1064 from the outside, and further seal the opening of the third cavity 1064.

Specifically, the second sealing element 116 is an O-ring, that is, the second sealing element 116 is annular and is sleeved in the third groove 1102, so that the second sealing element 116 can seal between the first sealing element 114 and the inner wall of the base 106, thereby further improving the sealing effect.

As shown in fig. 1 and 5, the jack 100 further includes a first mounting portion 118, a second mounting portion 122, a cable tube 124 and a socket 126; the first mounting portion 118 is disposed on an outer wall of the base 106, the first mounting portion 118 is disposed with a fourth cavity 120, and the fourth cavity 120 is communicated with the first channel 1066; the second mounting portion 122 is provided on the outer wall of the cylinder block 102; one end of the through pipe 124 is connected to the first mounting portion 118, and the other end is connected to the second mounting portion 122; the socket 126 is disposed on the second mounting portion 122; the cable 1088 is inserted through the first mounting portion 118 and the conduit 124, and the other end of the cable 1088 is connected to the socket 126.

In this embodiment, the jack 100 also includes a first mounting portion 118, a second mounting portion 122, a cable tube 124, and a socket 126. The first mounting portion 118 is disposed on an outer wall of the base 106 to mount and fix the first mounting portion 118. The first mounting portion 118 is provided with a fourth cavity 120, the fourth cavity 120 being in communication with the first channel 1066 to facilitate passage of a cable 1088 through the first mounting portion 118. The second mounting portion 122 is disposed on an outer wall of the cylinder block 102 to mount and fix the second mounting portion 122. The cable tube 124 is connected at one end to the first mounting portion 118 and at the other end to the second mounting portion 122 to allow for mounting and securing of the cable tube 124, and the cable 1088 may then be protected outside of the base 106 and cylinder 102 by the arrangement of the cable tube 124. The socket 126 is disposed on the second mounting portion 122 to mount and fix the socket 126, thereby facilitating the mounting of the socket 126. The other end of cable 1088 is connected to socket 126, such that socket 126 can provide power to detecting component 1084 via cable 1088, and socket 126 can also receive electrical signals generated by detecting component 1084.

In particular, socket 126 is connected to an external control component, so that the control component can control detection component 1084, and thus piston rod 104 can be controlled to move by a corresponding distance.

Specifically, the jack 100 further includes a third connecting member, and the third connecting member is inserted into the socket 126 and connected to the second mounting portion 122, so as to fix the socket 126 on the second mounting portion 122, and prevent the socket 126 from being separated from the second mounting portion 122 and damaging the socket 126 when the jack 100 works.

Specifically, the third connecting member is a U-shaped pin, and the socket 126 is fixed by the U-shaped pin.

Specifically, the socket 126 is a travel socket 126.

Specifically, by disposing the through pipe 124 outside the base 106 and the cylinder 102, the cable 1088 can be protected from being broken or squeezed by the falling coal slack to protect the cable 1088.

As shown in fig. 1 and 4, the jack 100 further includes a first housing 128, and the first housing 128 is connected to a side of the base 106 away from the piston rod 104.

In this embodiment, the jack 100 further includes a first housing 128, and the first housing 128 is connected to a side of the base 106 away from the piston rod 104 to implement installation and fixing of the first housing 128, so that the first housing 128 can protect the side of the base 106 away from the piston rod 104 and prevent damage to the side of the base 106 away from the piston rod 104.

A second aspect of the present embodiment provides a hydraulic support, which includes the lifting jack 100 in any one of the above embodiments, so that the hydraulic support has all the benefits of the lifting jack 100.

In this embodiment, the hydraulic support includes a jack 100, and the jack 100 includes a cylinder 102, a piston rod 104, a base 106, and a displacement sensing assembly 108. The cylinder 102 has a first cavity 1024 therein, and the piston rod 104 is located in the first cavity 1024 to achieve the installation of the piston rod 104. The piston rod 104 is capable of reciprocating within the first cavity 1024 so that the piston rod 104 can drive the bottom plate of the hydraulic mount, thereby driving the hydraulic mount in motion. The base 106 is coupled to the cylinder 102 at one end of the first cavity 1024 to enable the base 106 to be mounted with the cylinder 102. Displacement detection subassembly 108 sets up in base 106 and/or piston rod 104, can detect the height that piston rod 104 stretches out cylinder body 102, detect piston rod 104's the height that stretches out through displacement detection subassembly 108, thereby when jack 100 lifts the end to hydraulic support, can detect the height that hydraulic support lifted up, and then can avoid because of lifting the potential safety hazard that the too high support slope that leads to arouses of putting up, through the height of lifting to hydraulic support control, can realize the non-full stroke rack, move the frame, improve and move a efficiency.

In the claims, the specification and the drawings attached hereto, the term "plurality" means two or more, unless there is an additional explicit limitation, and the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings only for the purpose of describing the present invention more conveniently and simplifying the description process, but not for the purpose of indicating or implying that the device or element referred to must have the described specific orientation, be constructed and operated in a specific orientation, and thus, such description should not be construed as limiting the present invention; the terms "connect," "mount," "secure," and the like are to be construed broadly, and for example, "connect" may refer to a fixed connection between multiple objects, a removable connection between multiple objects, or an integral connection; the multiple objects may be directly connected to each other or indirectly connected to each other through an intermediate. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art from the above data.

In the claims, the specification and drawings of the specification, the description of the term "one embodiment," "some embodiments," "specific embodiments," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In the claims, the description and the drawings of the present application, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A jack, comprising:

a cylinder body having a first cavity therein;

the piston rod is positioned in the first cavity and can reciprocate in the first cavity;

the base is connected with the cylinder body and is positioned at one end of the first cavity;

and the displacement detection assembly is arranged on the base and/or the piston rod and can detect the height of the piston rod extending out of the cylinder body.

2. A jack as claimed in claim 1 in which the piston rod is provided with a second cavity in the direction of movement, the second cavity opening towards the base;

the displacement detection assembly includes:

the magnetic part is arranged on the piston rod;

a detection component disposed within the base;

the measuring rod, the one end of measuring rod with the detection part is connected, and the other end is located in the second cavity, the measuring rod wears to locate magnetic part, the piston rod can drive magnetic part for the measuring rod motion.

3. The jack of claim 2, wherein one end of the piston rod close to the base is provided with a first groove, and the magnetic member is positioned in the first groove; the jack further comprises:

the outer wall of the first connecting piece is connected with the inner wall of the first groove, is positioned on one side of the magnetic piece close to the base and is abutted against the magnetic piece.

4. A jack as claimed in claim 2 in which the base is provided with a second recess in a side thereof adjacent the piston rod, the detection means being located in the second recess; the jack further comprises:

and the outer wall of the second connecting piece is connected with the inner wall of the second groove and is abutted against the detection part.

5. The jack of claim 4, wherein the base has a third cavity therein, the third cavity is communicated with the second groove, and an opening of the third cavity is positioned on a side of the base away from the piston rod;

the jack still includes:

and the first sealing piece seals the opening of the third cavity.

6. A jack as claimed in claim 5 in which the side wall of the base is provided with a first passage which communicates with the third cavity;

the displacement detection assembly further comprises:

one end of the cable is connected with the detection component, the cable penetrates through the third cavity and the first channel, and the other end of the cable is located outside the side wall.

7. A jack as claimed in claim 5 in which,

a third groove is formed in the outer wall of the first sealing element and is arranged along the circumferential direction of the first sealing element;

the jack still includes:

a second seal located within the third groove, disposed circumferentially of the first seal.

8. A jack as claimed in claim 6 further comprising:

the first mounting part is arranged on the outer wall of the base and provided with a fourth cavity communicated with the first channel;

a second mounting portion provided to an outer wall of the cylinder block;

one end of the through pipe is connected with the first mounting part, and the other end of the through pipe is connected with the second mounting part;

a socket provided to the second mounting portion;

the cable is arranged in a penetrating mode in the first installation portion and the through pipe, and the other end of the cable is connected with the socket.

9. A jack as claimed in any one of claims 1 to 8 further comprising:

the first shell is connected with one side, far away from the piston rod, of the base.

10. A hydraulic support including a jack as claimed in any one of claims 1 to 9.