Bidirectional lock
By simplifying the valve body structure and spring piston cooperation of the hydraulic two-way lock, the problems of complex structure and frequent maintenance in the existing technology are solved, and a low-cost and high-efficiency hydraulic two-way lock design is achieved.
Patent Information
- Application Number
- CN202423280096.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-12-30
Smart Images
Figure CN223459401U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of hydraulic device, especially a bidirectional lock. BACKGROUND
[0002] In prior art, hydraulic bidirectional lock is one of the key valves to guarantee the working performance of hydraulic support, which provides necessary support for the downhole guard board. The hydraulic bidirectional lock is installed on the guard oil cylinder of the hydraulic support and is an indispensable core component of the hydraulic support. Overall, the hydraulic bidirectional lock has been able to meet the basic needs of coal mine equipment in China.
[0003] The typical structure of the hydraulic bidirectional lock mainly consists of a valve body, a valve core spring, a valve seat and a plunger. They usually adopt a valve sleeve type valve core design, and the valve core is embedded in the inside of the valve seat, which requires extremely high sliding fit precision, thereby increasing the processing difficulty. The tapered surface of the valve core and the stepped hole of the valve core form a line contact to bear the oil pressure and realize sealing. Since the valve core and the valve seat are both metal materials, the stress caused by the line contact is large, and the locking performance will decrease after wear. At the same time, the hard-to-hard line sealing method requires extremely high processing precision of the valve core and the valve seat, which not only increases the processing cost, but also makes the maintenance and replacement more frequent. In addition, due to the relatively complex structure of the valve sleeve type valve core, the corresponding valve body is also larger, which not only increases the material consumption of production and processing, but also increases the cost accordingly. SUMMARY
[0004] The main purpose of the utility model is to provide a bidirectional lock, which aims to solve the problems of complex structure, being not conducive to installation, maintenance and high cost of the current bidirectional lock.
[0005] In order to achieve the above-mentioned purpose, the utility model provides a bidirectional lock, which comprises:
[0006] The valve body is penetrated by a channel, the channel comprises a middle channel, and the two ends of the middle channel are sequentially connected with an outer end channel with a gradually decreasing inner diameter and a threaded port. The valve body is provided with two first liquid ports which are connected to the middle channel at intervals in length. The two ends of the valve body length are respectively provided with a second liquid port which is connected to the outer end channel.
[0007] Two valve seat barrels, the open end of which penetrates the outer end channel and partially extends into the middle channel. The closed end of the valve seat barrel is fixed to the threaded port. The valve seat barrel is provided with a first oil guiding part which is connected to the second liquid port in the circumferential direction.
[0008] Two valve core barrels, which are movably arranged in the valve seat barrel and have open ends facing outward. The valve core barrel is provided with a second oil guiding part which is connected to the first oil guiding part in the circumferential direction. Among them, the valve core barrel adjusts the conduction between the first liquid port and the second liquid port by sliding.
[0009] Two first springs, which are clamped between the valve seat barrel and the valve core barrel.
[0010] The piston comprises a piston plate part and a top rod connected to both ends of the piston plate part, the piston plate part is arranged between two first liquid ports and matched with a middle passage, and a ring plate corresponding to a peripheral wall of an open end of the valve seat barrel is arranged on an outer periphery of the top rod, wherein the ring plate is in clearance fit with the open end of the valve seat barrel in a free state, and the top rod abuts against a closed end of the valve core barrel.
[0011] Two second springs are respectively abutted between the open end peripheral walls of the two valve seat barrels and the piston plate part.
[0012] Further, a limiting cover can be detachably connected to the open end of the valve seat barrel, wherein the piston abuts against the valve core barrel in the free state.
[0013] Further, the bidirectional lock further comprises a first sealing ring clamped between an end face of the middle passage near the outer end passage and the valve seat barrel.
[0014] Further, the bidirectional lock further comprises a second sealing ring clamped between an end face of the outer end passage near the threaded port and the valve seat barrel.
[0015] Further, a third sealing ring is arranged on an outer periphery of the piston plate part.
[0016] Further, the top rod and the ring plate are welded, pinned or threadedly connected.
[0017] Further, the position of the ring plate in the length direction of the top rod is adjustable.
[0018] Further, the number of the first liquid ports is multiple and arranged peripherally, and the number of the second liquid ports is multiple and arranged peripherally.
[0019] Further, the outer diameter of the second spring is consistent with the inner diameter of the middle passage.
[0020] Further, the outer diameter of the first spring is consistent with the inner diameter of the valve core barrel.
[0021] The bidirectional lock provided by the utility model has the advantages that the overall structure is simple, processing and maintenance are facilitated, the inner diameters of the middle passage, the outer end passage and the threaded port are gradually increased, processing is facilitated, and installation of the valve seat barrel is facilitated; the second spring provides power for restoring the position of the piston based on the valve seat barrel, so that other acting bases are not needed; the ring plate is in clearance fit with the open end of the valve seat barrel in the free state, the movement of the valve core barrel into the valve seat barrel is not hindered, and the sliding of the valve core barrel out of the valve seat barrel is limited. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 is a schematic view of a valve body in the bidirectional lock of the first embodiment of the utility model;
[0023] Figure 2is a schematic view of the valve seat barrel in the bidirectional lock of the first embodiment of the utility model;
[0024] Figure 3 is a schematic view of the valve core barrel in the bidirectional lock of the first embodiment of the utility model;
[0025] Figure 4 is a schematic view of the piston in the bidirectional lock of the first embodiment of the utility model;
[0026] Figure 5 is a schematic view of the bidirectional lock of the first embodiment of the utility model (the piston is in a free state);
[0027] Figure 6 is a schematic view of the bidirectional lock of the first embodiment of the utility model (the piston is in a left-moving state);
[0028] Figure 7 is a schematic view of the bidirectional lock of the second embodiment of the utility model (the piston is in a free state)。
[0029] The utility model realizes the purpose, functional characteristics and advantages, which will be further explained by combining with embodiments and referring to the drawings. DETAILED DESCRIPTION
[0030] It should be understood that the specific embodiments described herein are merely intended to explain the utility model, and are not intended to limit the utility model.
[0031] Those skilled in the art can understand that, unless specifically stated, the singular forms "a", "an" and "the" used herein also include the plural forms. It should be further understood that the phrase "comprising" used in the specification of the utility model means that the features, integers, steps, operations, elements, units, modules and / or components exist, but does not exclude the existence or addition of one or more other features, integers, steps, operations, elements, units, modules, components and / or their combinations. It should be understood that when we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there can be an intermediate element. In addition, "connected" or "coupled" used herein can include wireless connection or wireless coupling. The phrase "and / or" used herein includes all or any unit and all combinations of the associated listed items.
[0032] As will be understood by one of skill in the art, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless otherwise defined. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
[0033] Referring to Figures 1 to 7 In an embodiment of the present application, a bidirectional lock comprises:
[0034] A valve body 100 is provided with a channel 110, the channel 110 comprises a middle channel 111, and the middle channel 111 is sequentially connected with an outer end channel 112 with a gradually decreasing inner diameter and a threaded port 113 at both ends, the valve body 100 is provided with two first liquid ports 120 which are connected to the middle channel 111 at intervals in length, and the valve body 100 is provided with a second liquid port 130 which is connected to the outer end channel 112 at each end in length;
[0035] Two valve seat barrels 200 are partially inserted into the middle channel 111 through the outer end channel 112, and the closed ends of the valve seat barrels 200 are fixed to the threaded port 113, and the valve seat barrels 200 are provided with a first oil passage part 210 which is connected to the second liquid port 130 in the circumferential direction;
[0036] Two valve core barrels 300 are movably arranged in the valve seat barrels 200 and have open ends facing outward, and the valve core barrels 300 are provided with a second oil passage part 310 which is connected to the first oil passage part 210 in the circumferential direction, wherein the valve core barrels 300 are adjusted to connect the first liquid port 120 and the second liquid port 130.
[0037] Two first springs 400 are clamped between the valve seat barrels 200 and the valve core barrels 300;
[0038] A piston 500 comprises a piston plate part 510 and a top rod 520 connected to both ends of the piston plate part 510, the piston plate part 510 is arranged between the two first liquid ports 120 and matched with the middle channel 111, and the outer periphery of the top rod 520 is provided with a ring plate 530 corresponding to the circumferential wall of the open end of the valve seat barrel 200, wherein the ring plate 530 is in clearance fit with the open end of the valve seat barrel 200 in a free state, and the top rod 520 abuts against the closed end of the valve core barrel 300;
[0039] Two second springs 600 are respectively abutted between the circumferential wall of the open end of the two valve seat barrels 200 and the piston plate part 510.
[0040] In the prior art, the hydraulic bidirectional lock has a complex structure, high processing cost, and relatively high maintenance and replacement frequency.
[0041] The bidirectional lock is provided with a channel 110 penetrating through the valve body 100 in the length direction.
[0042] The two ends of the middle channel 111 are the outer end channels 112, and the outer ends of the outer end channels 112 are connected with the threaded mouths 113.
[0043] The two valve seat barrels 200 are partially inserted into the middle channel 111 through the outer end channels 112.
[0044] The two valve seat barrels 200 are partially inserted into the middle channel 111 through the outer end channels 112.
[0045] The two first springs 400 are clamped between the valve seat barrel 200 and the valve core barrel 300, so that the first spring 400 provides the power for driving the valve core barrel 300 to the outside of the valve seat barrel 200.
[0046] The piston 500 includes a piston plate part 510 and a top rod 520 connected to the two ends of the piston plate part 510.
[0047] Two second springs 600 are respectively abutted between the open end peripheral wall of the two valve seat barrels 200 and the piston plate part 510. The second spring 600 provides the power to restore the position of the piston 500 based on the valve seat barrel 200, so that other action bases do not need to be arranged.
[0048] Taking the first liquid port 120 as an example. In the working process, when the left first liquid port 120 passes through the pressure oil, under the action of the pressure oil, the left first spring 400 is compressed, the left first liquid port 120 and the left second liquid port 130 are communicated, and the pressure oil can enter the rodless chamber of the jack. At the same time, the high-pressure oil introduced into the first liquid port 120 acts on the piston 500, and the right first spring 400 is also compressed, the right first liquid port 120 and the right second liquid port 130 are communicated, and the oil in the rod chamber of the jack is introduced into the right first liquid port 120 from the right second liquid port 130.
[0049] In summary, the overall structure is simple, convenient for processing and maintenance, the inner diameters of the middle passage 111, the outer end passage 112 and the threaded port 113 are gradually increased, which is convenient for processing and also provides a basis for the installation of the valve seat barrel 200; the second spring 600 provides the power to restore the position of the piston 500 based on the valve seat barrel 200, so that other action bases do not need to be arranged; in the free state, the ring plate 530 and the open end of the valve seat barrel 200 are gap-fitted, which does not hinder the movement of the valve core barrel 300 into the valve seat barrel 200, but limits the sliding of the valve core barrel 300 out of the valve seat barrel 200.
[0050] Referring to Figure 7 In an embodiment, a limit cover 700 is detachably connected to the open end of the valve seat barrel 200, wherein the piston 500 is in a free state, and the limit cover 700 abuts against the valve core barrel 300.
[0051] In this embodiment, the limit cover 700 is added to avoid abnormal movement of the valve core barrel 300. The connection mode of the limit cover 700 and the valve seat barrel 200 can be threaded connection, buckling or clamping, etc.
[0052] Referring to Figure 5 In an embodiment, the bidirectional lock further comprises a first sealing ring clamped between the end face of the middle passage 111 close to the outer end passage 112 and the valve seat barrel 200.
[0053] In this embodiment, the circumferential and axial sealing effect at this position is improved by the first sealing ring. The shape and number of the first sealing ring are not limited, and are guided by the convenience of installation and the provision of sealing effect.
[0054] Referring to Figure 5In one embodiment, the bidirectional lock further comprises a second sealing ring, which is clamped between the end face of the outer end channel 112 near the threaded port 113 and the valve seat barrel 200.
[0055] In the present embodiment, the second sealing ring improves the circumferential and axial sealing effect at the position. The shape and number of the second sealing ring are not limited, and are guided by the convenience of installation and the provision of sealing effect.
[0056] Referring to Figure 5 In one embodiment, the outer periphery of the piston plate part 510 is provided with a third sealing ring.
[0057] In the present embodiment, the sealing ring provided on the outer periphery of the piston plate part 510 ensures the sealing effect between the piston plate part 510 and the middle channel 111, and the oil passage environments on both sides of the piston plate part 510 do not interfere with each other.
[0058] In one embodiment, the top rod 520 and the ring plate 530 are connected by welding, pin connection or threaded connection.
[0059] In the present embodiment, several suitable fixing methods of the ring plate 530 are given, which ensure the simplification of the machining process on the premise of realizing the fixation of the relevant positions.
[0060] In one embodiment, the position of the ring plate 530 in the length direction of the top rod 520 is adjustable.
[0061] In the present embodiment, the position adjustment of the ring plate 530 realizes the adaptive adjustment in the use process.
[0062] In one embodiment, the number of the first liquid port 120 is multiple and circumferentially arranged, and the number of the second liquid port 130 is multiple and circumferentially arranged.
[0063] In the present embodiment, the number of the first liquid port 120 and the second liquid port 130 is increased, so that the control efficiency and flexibility of the bidirectional lock are improved.
[0064] In one embodiment, the outer diameter of the second spring 600 is consistent with the inner diameter of the middle channel 111.
[0065] In the present embodiment, the outer diameter of the second spring 600 is limited, so that the second spring 600 does not abnormally deform during the extension and retraction process, and provides a stable elastic force, which provides a basis for the stable work of the entire bidirectional lock.
[0066] In one embodiment, the outer diameter of the first spring 400 is consistent with the inner diameter of the valve core barrel 300.
[0067] In the embodiment, the outer diameter of the first spring 400 is limited, so that the first spring 400 does not abnormally deform in the process of stretching and retracting, and a stable elastic force is provided, thereby providing a basis for stable work of the whole bidirectional lock.
[0068] In conclusion, the bidirectional lock has simple overall structure, is convenient to process and maintain, and has the inner diameters of the three of the middle passage 111, the outer end passage 112 and the threaded opening 113 gradually increasing, thereby being convenient to process and providing a basis for installation of the valve seat barrel 200; the second spring 600 provides power for restoring the position of the piston 500 based on the valve seat barrel 200, so that other acting bases do not need to be arranged; the ring plate 530 is in clearance fit with the open end of the valve seat barrel 200 in the free state, does not hinder movement of the valve core barrel 300 into the valve seat barrel 200, but limits sliding of the valve core barrel 300 out of the valve seat barrel 200.
[0069] The above only describes preferred embodiments of the utility model, and does not limit the patent range of the utility model, and equivalent structures or equivalent process transformations using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields are all included in the patent protection range of the utility model.
Claims
1. A bidirectional lock characterized by, The utility model relates to a valve body, a channel is passed through, the channel includes a middle channel and the outer end channel and the threaded mouth that gradually include the inner diameter of the middle channel two ends are connected in proper order, the valve body is spaced in length and is equipped with two first liquid ports leading to the middle channel, and the valve body length two ends are provided with one second liquid port leading to the outer end channel respectively, two valve seat barrels, the open end passes through the outer end channel and partially extends into the middle channel, the valve seat barrel closed end is fixed in the threaded mouth, and the valve seat barrel is provided with the first oil lead -through portion leading to the second liquid port in the circumference, two valve core barrels are movably arranged in the valve seat barrel and the open end faces outward, the valve core barrel is provided with the second oil lead -through portion leading to the first oil lead -through portion in the circumference, wherein when the valve core barrel slides and adjusts the lead -through between the first liquid port and the second liquid port, two first springs are clamped between the valve seat barrel and the valve core barrel, the piston includes the piston plate portion and the top rod connected to the piston plate portion two ends, the piston plate portion is arranged between the two first liquid ports and matches the middle channel, and the outer periphery of the top rod is provided with the ring plate corresponding to the peripheral wall of the valve seat barrel open end, wherein the ring plate and the valve seat barrel open end are gap matched in the free state, and the top rod supports the closed end of the valve core barrel, two second springs are respectively supported between the open end peripheral wall of the two valve seat barrels and the piston plate portion. The open end of the valve seat barrel can be detachably connected with a limiting cover, wherein the piston is in the free state, and the limiting cover supports the valve core barrel. The bidirectional lock further includes a first sealing ring clamped between the end face of the middle channel near the outer end channel and the valve seat barrel. The bidirectional lock further includes a second sealing ring clamped between the end face of the outer end channel near the threaded mouth and the valve seat barrel. The outer periphery of the piston plate portion is provided with a third sealing ring. The top rod and the ring plate are welded, pinned or threadedly connected. The position of the ring plate in the length direction of the top rod is adjustable.
2. The bidirectional lock of claim 1, wherein, The number of the first liquid ports is multiple and circumferentially arranged, and the number of the second liquid ports is multiple and circumferentially arranged.
3. The bidirectional lock of claim 1, wherein, The outer diameter of the second spring is consistent with the inner diameter of the middle channel.
4. The bidirectional lock of claim 3, wherein, The outer diameter of the first spring is consistent with the inner diameter of the valve core barrel.
5. The bidirectional lock of claim 1, wherein, 6. The bidirectional lock according to any one of claims 1 to 5, wherein, 7. The bidirectional lock of claim 6, wherein, 8. The bidirectional lock according to any one of claims 1 to 5, wherein, 9. The bidirectional lock according to any one of claims 1 to 5, wherein, 10. The bidirectional lock according to any one of claims 1 to 5, wherein,