Follow-up self-locking three-dimensional jack

Abstract

The present application discloses a follow-up self-locking three-dimensional jack, including: a longitudinal movement system, a transverse movement system, a vertical lifting system and a follow-up self-locking mechanism. The longitudinal movement system is connected to the transverse movement system and drives the transverse movement system to move longitudinally. The transverse movement system is also connected to the vertical lifting system and drives the vertical lifting system to move laterally. The vertical lifting system is used to move in the vertical direction; the follow-up self-locking mechanism is movably connected to the vertical lifting system, and the follow-up self-locking mechanism locks the vertical lifting system or releases the locking of the vertical lifting system. The present application can adjust the workpiece in the horizontal, transverse, longitudinal and vertical directions through the above-mentioned longitudinal movement system, transverse movement system and vertical lifting system; the follow-up self-locking mechanism maintains the locking trend of the vertical lifting system during the vertical lifting system's up and down movement lifting adjustment process, and immediately locks the vertical lifting system after the vertical lifting system's up and down movement lifting adjustment is completed.

Description

Technical Field

[0001] The present application belongs to the technical field of jacks, and in particular relates to a follow-up self-locking three-dimensional jack. Background Art

[0002] Three-dimensional jacks are used in hull welding, railways, highways, bridges or similar beam-type heavy object displacement operations to adjust the displacement of workpieces in the horizontal, longitudinal and vertical directions. The main structure of the three-dimensional jack is composed of jack cylinders in the horizontal, longitudinal and vertical directions, a structural support box, a slideway, etc.; it has the ability to move forward and backward, left and right, and up and down. Among the existing three-dimensional jacks, the vertical jack is generally equipped with a safety valve, a balance valve, a hydraulic lock, a piston rod with a nut to prevent retreat, and a ratchet lock extended on the jack piston rod for safety protection to prevent accidents caused by heavy objects falling. The existing technology has the following problems:

[0003] Configuring safety valves, balancing valves, hydraulic locks and other hydraulic valves for safety protection to prevent heavy objects from falling is completely dependent on hydraulic valves for safety protection. Existing hydraulic valves cannot achieve zero leakage, so they cannot be effectively locked for a long time. Moreover, these hydraulic valves will lose safety protection when the hydraulic pipelines fail or are damaged.

[0004] The piston rod plus nut anti-retraction means that the main oil cylinder piston rod surface is machined with an external thread structure, and the nut is matched with a nut to manually adjust the nut position so that the nut contacts and supports the main oil cylinder body to prevent retreat and lock. This method requires manual adjustment of the nut position by humans or control of motors and motors after the main oil cylinder is lifted to the required position so that the nut contacts and supports the main oil cylinder body; when the main oil cylinder retracts, it is necessary to manually adjust the nut position by humans or control motors and motors so that the nut is away from the main oil cylinder body before it can be retracted; or the control method of motors and motors is to start the motors and motors after the main oil cylinder stops running. During the operation, it is impossible to achieve follow-up self-locking. When manually adjusting the nut position, it is very unsafe for the operator under the heavy object.

[0005] Methods such as adding a nut to prevent retreat on the piston rod require extending the thread on the jack piston rod to cooperate with the nut locking. The part that needs to be extended is larger than the effective stroke, so the height of the jack body is greatly increased. It relies on the gravity of the equipment and load or the spring to reset. This method is prone to the defect of not being able to reset to the end of the stroke during use, thus affecting the effective lifting height.

[0006] The ratchet lock method of extending the piston rod of the jack requires that the extended portion be greater than the effective stroke, so that the height of the jack body is greatly increased. It cannot be used in some applications, especially in ship hull welding, railways, roads, bridges or similar beam-type heavy object displacement operations when the on-site installation space is small. Summary of the invention

[0007] In view of the above-mentioned shortcomings or deficiencies of the prior art, the technical problem to be solved by the present application is to provide a follow-up self-locking three-dimensional jack.

[0008] To solve the above technical problems, this application is implemented through the following technical solutions:

[0009] The present application proposes a follower self-locking three-dimensional jack, comprising: a longitudinal movement system, a transverse movement system, a vertical jacking system and a follower self-locking mechanism, wherein the longitudinal movement system is connected to the transverse movement system and drives the transverse movement system to move longitudinally, the transverse movement system is also connected to the vertical jacking system and drives the vertical jacking system to move laterally, and the vertical jacking system is used for moving in the vertical direction; the follower self-locking mechanism is movably connected to the vertical jacking system, and the follower self-locking mechanism locks the vertical jacking system or releases the lock of the vertical jacking system.

[0010] Furthermore, in the above-mentioned follow-up self-locking three-dimensional jack, the longitudinal movement system includes: a first cylinder, a first piston rod, a first guide sleeve and a first box body, the first cylinder is fixedly mounted on the first box body, the first end of the first piston rod is slidably sleeved in the first cylinder, the second end of the first piston rod is fixedly mounted on the transverse movement system, the first guide sleeve is mounted in the first cylinder and slidably sleeved on the first end of the first piston rod; the first cylinder is also provided with a first oil port and a second oil port.

[0011] Furthermore, in the above-mentioned follow-up self-locking three-dimensional jack, the lateral movement system includes: a second cylinder, a second piston rod, a second guide sleeve and a second box body, the second cylinder is fixedly mounted on the second box body, the first end of the second piston rod is slidably sleeved in the second cylinder, the second end of the second piston rod is fixedly mounted on the vertical jacking system, the second guide sleeve is installed in the second cylinder and slidably sleeved on the second end of the second piston rod; the second cylinder is also provided with a third oil port and a fourth oil port.

[0012] Furthermore, the above-mentioned follow-up self-locking three-dimensional jack, wherein the vertical jacking system includes: a third cylinder, a third piston rod, a third guide sleeve, a third piston, a stop rod and a cylinder head, the stop rod sliding sleeve is arranged in the inner hole of the third cylinder, the third piston sliding sleeve is arranged in the inner hole of the stop rod and is installed on the upper end of the third piston rod, the lower end of the third piston rod is fixedly installed on the lower end of the third cylinder, the third guide sleeve is installed in the inner hole of the lower end of the stop rod and is slidably sleeved on the third piston rod, and the cylinder head is installed in the inner hole of the upper end of the stop rod; the third cylinder is also connected to the transverse movement system; the third cylinder is also provided with a fifth oil port and a sixth oil port.

[0013] Furthermore, in the above-mentioned follow-up self-locking three-dimensional jack, the vertical jacking system also includes: a pushing body, the pushing body is used to push the workpiece, and the pushing body is arranged on the cylinder head.

[0014] Furthermore, in the above-mentioned follow-up self-locking three-dimensional jack, the follow-up self-locking mechanism includes: a stop ring, a disc spring, a fourth piston rod and a fourth cylinder barrel, the stop ring is arranged on the third cylinder barrel and is movably connected to the stop rod, the fourth piston rod is slidably sleeved in the inner hole of the fourth cylinder barrel, the fourth piston rod is also fixedly connected to the stop ring, and the fourth cylinder barrel is also detachably connected to the third cylinder barrel; the disc spring is sleeved on the fourth piston rod, and one end of the disc spring is in contact with the stop ring, and the second end of the disc spring is in contact with the fourth cylinder barrel; the fourth cylinder barrel is also provided with a seventh oil port.

[0015] Furthermore, in the above-mentioned follower self-locking three-dimensional jack, the follower self-locking mechanism also includes a cover cap, and the cover cap is screwed on the third cylinder.

[0016] Furthermore, the above-mentioned follower self-locking three-dimensional jack also includes a hydraulic reset mechanism, which connects the seventh oil port with the fifth oil port. Under the action of the hydraulic reset mechanism, the follower self-locking mechanism overcomes the compression force of the disc spring and releases the locking of the vertical jacking system by the follower self-locking mechanism.

[0017] Furthermore, in the above-mentioned follow-up self-locking three-dimensional jack, the anti-retraction ring is provided with a first ratchet tooth, the anti-retraction rod is provided with a second ratchet tooth, and the first ratchet tooth and the second ratchet tooth are matched.

[0018] Furthermore, in the above-mentioned follower self-locking three-dimensional jack, the first ratchet tooth or the second ratchet tooth includes a plurality of continuous sections of unidirectional bevel tooth surfaces.

[0019] Compared with the prior art, this application has the following technical effects:

[0020] The present application can adjust the workpiece in the horizontal, lateral, longitudinal and vertical directions through the above-mentioned longitudinal movement system, transverse movement system and vertical jacking system to meet the displacement operations of hull welding, railways, roads, bridges or similar beam-type heavy objects; and the above-mentioned follow-up self-locking mechanism maintains the locking tendency of the vertical jacking system during the vertical jacking adjustment process of the vertical jacking system, and immediately locks the vertical jacking system after the vertical jacking adjustment of the vertical jacking system is completed. The control method of the above-mentioned follow-up self-locking mechanism is simple and easy to control, highly effective, highly safe, double-acting hydraulic reset and can save installation space;

[0021] The hydraulic reset mechanism in the present application enables the vertical lifting system to be connected to the oil circuit of the follow-up self-locking mechanism, thereby making the entire control process more automated without the need for manual intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0023] Figure 1 : A three-dimensional diagram of the follow-up self-locking three-dimensional jack of the present application;

[0024] Figure 2 : A plan view of the follow-up self-locking three-dimensional jack of the present application;

[0025] Figure 3 : A cross-sectional view of the follow-up self-locking three-dimensional jack along CC of the present application;

[0026] Figure 4 : A cross-sectional view of the follow-up self-locking three-dimensional jack of the present application along EE;

[0027] Figure 5 :like Figure 3 A partial enlarged view of the structure shown. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0032] like Figure 1 and Figure 2 As shown, in one embodiment of the present application, the follow-up self-locking three-dimensional jack includes: a longitudinal movement system Y, a transverse movement system X, a vertical lifting system Z and a follow-up self-locking mechanism, wherein the longitudinal movement system Y is connected to the transverse movement system X and drives the transverse movement system X to move longitudinally, the transverse movement system X is also connected to the vertical lifting system Z and drives the vertical lifting system Z to move laterally, and the vertical lifting system Z is used to move in the vertical direction; the follow-up self-locking mechanism is movably connected to the vertical lifting system Z, and the follow-up self-locking mechanism locks the vertical lifting system Z or releases the locking of the vertical lifting system Z.

[0033] This embodiment can adjust the workpiece in three directions, horizontal, longitudinal and vertical, through the longitudinal movement system Y, transverse movement system X and vertical jacking system Z, to meet the displacement operation of hull welding, railway, highway, bridge or similar beam-type heavy objects; and the above-mentioned follow-up self-locking mechanism maintains the locking tendency of the vertical jacking system Z during the vertical jacking adjustment process of the vertical jacking system Z, and immediately locks the vertical jacking system Z after the vertical jacking adjustment of the vertical jacking system Z is completed. The control method of the above-mentioned follow-up self-locking mechanism is simple and easy to control, highly effective and safe.

[0034] Among them, Figure 3As shown, the longitudinal movement system Y comprises: a first cylinder 1, a first piston rod 2, a first guide sleeve 4 and a first housing 6. The first cylinder 1 is fixedly mounted on the first housing 6. The first end of the first piston rod 2 is slidably sleeved in the first cylinder 1. The second end of the first piston rod 2 is fixedly mounted on the transverse movement system. The first guide sleeve 4 is mounted in the first cylinder 1 and slidably sleeved on the first end of the first piston rod 2. The first cylinder 1 is also provided with a first oil port ZB (rodless chamber oil port) and a second oil port ZA (rod chamber oil port). The first cylinder 1 is fixedly mounted on the first housing 6 and adjusts the workpiece through the longitudinal back and forth movement of the first piston rod 2.

[0035] Furthermore, the first cylinder 1 is mounted on the first box body 6 and fixed by a first clamping nut 3 , and the first piston rod 2 is connected to the second box body 12 in the transverse movement system X by a first pin shaft 5 .

[0036] Specifically, when oil is supplied to the first oil port ZB, the first piston rod 2 extends outward, pushing the second box 12 in the lateral movement system X described below to move in the longitudinal positive direction, and the hydraulic oil in the rod chamber of the first oil cylinder is discharged back to the oil tank through the second oil port ZA. When oil is supplied to the second oil port ZA, the first piston rod 2 retracts inward, pulling the second box 12 in the lateral movement system X described below to move in the longitudinal negative direction, and the hydraulic oil in the rodless chamber of the first oil cylinder is discharged back to the oil tank through the first oil port ZB.

[0037] Among them, Figure 4 As shown, the lateral movement system X includes: a second cylinder 7, a second piston rod 8, a second guide sleeve 10 and a second box 12, the second cylinder 7 is fixedly mounted on the second box 12, the first end of the second piston rod 8 is slidably sleeved in the second cylinder 7, the second end of the second piston rod 8 is fixedly mounted on the vertical lifting system Z, the second guide sleeve 10 is mounted in the second cylinder 7 and slidably sleeved on the second end of the second piston rod 8; the second cylinder 7 is also provided with a third oil port HB (rodless chamber oil port) and a fourth oil port HA (rod chamber oil port). The above-mentioned second cylinder 7 is fixedly mounted on the second box 12 and the workpiece is adjusted by the lateral back and forth movement of the second piston rod 8.

[0038] Furthermore, in this embodiment, the second cylinder 7 is mounted on the second box body 12 and fixed by a second clamping nut 9, and the second piston rod 8 is connected to the third cylinder 13 in the vertical jacking system Z described below through a second pin 11.

[0039] Specifically, the third oil port HB is supplied with oil, the second piston rod 8 extends outward, pushes the third cylinder 13 in the vertical jacking system Z described below to move in the positive lateral direction, and the hydraulic oil in the rod chamber of the second oil cylinder is discharged back to the oil tank through the fourth oil port HA. The fourth oil port HA is supplied with oil, the second piston rod 8 retracts inward, pulls the third cylinder 13 in the vertical jacking system Z described below to move in the negative lateral direction, and the hydraulic oil in the rodless chamber of the second oil cylinder is discharged back to the oil tank through the third oil port HB.

[0040] like Figure 3 As shown, the vertical lifting system Z includes: a third cylinder 13, a third piston rod 15, a third guide sleeve 16, a third piston 18, a stop rod 17 and a cylinder head 20, the stop rod 17 is slidably sleeved in the inner hole of the third cylinder 13, the third piston 18 is slidably sleeved in the inner hole of the stop rod 17 and is installed on the upper end of the third piston rod 15, the lower end of the third piston rod 15 is fixedly installed on the lower end of the third cylinder 13, the third guide sleeve 16 is installed in the inner hole of the lower end of the stop rod 17 and is slidably sleeved on the third piston rod 15, and the cylinder head 20 is installed in the inner hole of the upper end of the stop rod 17; the third cylinder 13 is also connected to the follow-up self-locking mechanism; the third cylinder 13 is also provided with a fifth oil port (rodless chamber oil port) CB and a sixth oil port (rod chamber oil port) CA. During the up and down movement and lifting adjustment process of the vertical jacking system Z, the follow-up self-locking mechanism maintains the locking trend of the vertical jacking system Z. After the up and down movement and lifting adjustment of the vertical jacking system Z is completed, the follow-up self-locking mechanism immediately locks the vertical jacking system Z.

[0041] Furthermore, the lower end of the third piston rod 15 is fixedly mounted on the lower end of the third cylinder 13 and fixed by a third tightening nut 14 .

[0042] The vertical lifting system Z further includes: a pushing body 21 , which is used to push the workpiece, and the pushing body 21 is arranged on the cylinder head 20 .

[0043] like Figure 3 and Figure 5As shown, the follow-up self-locking mechanism includes: a stop ring 22, a disc spring 23, a fourth piston rod 24 and a fourth cylinder 25, the stop ring 22 is arranged on the third cylinder 13 and is movably connected to the stop rod 17, the fourth piston rod 24 is slidably sleeved in the inner hole of the fourth cylinder 25, the fourth piston rod 24 is also fixedly connected to the stop ring 22, further, the fourth piston rod 24 can be fixedly connected to the stop ring 22 by means of a pin screw or the like; the fourth cylinder 25 is also detachably connected to the third cylinder 13, further, the fourth cylinder 25 can be screwed on the third cylinder 13 by internal and external threads; the disc spring 23 is sleeved on the fourth piston rod 24, and one end of the disc spring 23 is in contact with the stop ring 22, and the second end of the disc spring 23 is in contact with the fourth cylinder 25; the fourth cylinder 25 is also provided with a seventh oil port YA.

[0044] Furthermore, the follower self-locking mechanism also includes a cover cap 26 , and the cover cap 26 is screwed on the third cylinder 13 .

[0045] Furthermore, the above-mentioned follow-up self-locking mechanism also includes: a backstop ring cover plate 19, and the backstop ring cover plate 19 is installed on the inner hole step at the upper end of the third cylinder 13.

[0046] In this embodiment, by adjusting the initial compression force of the disc spring 23 when the fourth cylinder 25 is screwed into the outer circle of the step at the upper end of the third cylinder 13 mentioned above, the pre-tightening force generated by the disc spring 23 on the backstop ring 22 is adjusted, thereby controlling the locking force of the backstop ring 22 on the backstop rod 17; when the depth adjustment of the fourth cylinder 25 is completed, the fourth tightening nut 27 is tightened to prevent the fourth cylinder 25 from loosening and affecting the pre-tightening force; the cap 26 mentioned above can be screwed on the fourth cylinder 25 as the back cover of the fourth cylinder 25 to prevent the fourth piston rod 24 from loosening at the connection with the backstop ring 22, causing the fourth piston rod 24 to disengage from the backstop ring 22.

[0047] Furthermore, the present embodiment also includes a hydraulic reset mechanism, which connects the seventh oil port YA with the fifth oil port CB. Under the action of the hydraulic reset mechanism, the follow-up self-locking mechanism overcomes the compression force of the disc spring 23 and releases the locking of the vertical jacking system Z by the follow-up self-locking mechanism.

[0048] Furthermore, the anti-backward ring 22 is provided with a first ratchet tooth 201 , and the anti-backward rod 17 is provided with a second ratchet tooth 202 , and the first ratchet tooth 201 and the second ratchet tooth 202 are matched with each other.

[0049] Furthermore, the first ratchet tooth 201 or the second ratchet tooth 202 includes a plurality of continuous unidirectional bevel tooth surfaces.

[0050] The working principle of this embodiment is as follows:

[0051] Oil is supplied to the seventh oil port YA, and the hydraulic oil enters the rod chamber of the fourth oil cylinder through the oil channel 106. The fourth piston rod 24 overcomes the compressive force of the disc spring 23 and retracts, pulling the check ring 22 to separate outward so that the first ratchet tooth 201 of the check ring 22 and the second ratchet tooth 202 of the check rod 17 are separated and the locking state is released; oil supply to the seventh oil port YA is stopped, the fourth piston rod 24 extends outward under the compressive force of the disc spring 23, and the hydraulic oil in the rod chamber of the fourth oil cylinder is discharged to the seventh oil port YA through the oil channel 106, and the check ring 22 merges inward under the compressive force of the disc spring 23 so that the first ratchet tooth 201 of the check ring 22 and the second ratchet tooth 202 of the check rod 17 are engaged and maintained in the locked state.

[0052] Supply oil to the fifth oil port CB in the vertical jacking system, and the pressure oil reaches the rodless chamber of the third oil cylinder through the oil passage 100, and reaches the rodless chamber of the reaction force-enhancing oil cylinder through the oil passages 101 and 102. The piston rod of the third oil cylinder, i.e., the backstop rod 17, extends upward under the action of the hydraulic oil pressure. If the sixth oil port CA and the seventh oil port YA are directly connected in parallel through the hydraulic reset mechanism, at this time, if the return oil back pressure is greater than the opening pressure of the hydraulic reset mechanism, the return oil back pressure hydraulic oil enters the rod chamber of the fourth oil cylinder through the oil passage 106, and the fourth piston rod 24 overcomes the compression force of the disc spring 23 and retracts, pulling the backstop ring 22 to separate outward, so that the first ratchet 201 of the backstop ring 22 and the second ratchet 202 of the backstop rod 17 are separated and the locking state is released; at this time, if the return oil back pressure is not greater than the opening pressure of the hydraulic reset mechanism During the extension of the piston rod of the third oil cylinder, i.e., the stop rod 17, the stop ring 22 is combined inwardly under the compressive force of the disc spring 23, so that the first ratchet 201 of the stop ring 22 and the second ratchet 202 of the stop rod 17 are meshed. Since the second ratchet 202 of the stop rod 17 and the first ratchet 201 of the stop ring 22 are mutually unidirectional oblique tooth surfaces, during the extension of the piston rod of the third oil cylinder, i.e., the stop rod 17, the second ratchet 202 continuously causes the stop ring 22 to overcome the compressive force of the disc spring 23 and separate outward to release the locking state. The hydraulic oil in the rod chamber of the reaction booster oil cylinder is discharged back to the oil tank through the sixth oil port CA through the oil passages 103, 104, and 105. Stop supplying oil to the fifth oil port CB, the fourth piston rod 24 extends under the compressive force of the disc spring 23, the hydraulic oil in the rod chamber of the fourth cylinder is discharged back to the oil tank through the seventh oil port YA via the oil passage 106, and the backstop ring 22 merges inwardly under the compressive force of the disc spring 23 so that the first ratchet tooth 201 of the backstop ring 22 and the second ratchet tooth 202 of the backstop rod 17 engage and maintain a locked state.

[0053] When the sixth oil port CA and the seventh oil port YA in the above technical solution do not adopt the method of direct parallel connection: supply oil to the fifth oil port CB, the pressure oil reaches the rodless chamber of the third oil cylinder through the oil passage 100, and reaches the rodless chamber of the reaction booster oil cylinder through the oil passages 101 and 102, and the piston rod of the third oil cylinder, i.e., the backstop rod 17, extends upward under the action of the hydraulic oil pressure. At this time, if oil is supplied to the seventh oil port YA, the hydraulic oil enters the rod chamber of the fourth oil cylinder through the oil passage 106, and the fourth piston rod 24 retracts to overcome the compression force of the disc spring 23, pulling the backstop ring 22 to separate outward, so that the first ratchet 201 of the backstop ring 22 and the second ratchet 202 of the backstop rod 17 are separated and the locking state is released. If the seventh oil port YA is not supplied with oil, the stop ring 22 will merge inwards under the compressive force of the disc spring 23 during the extension of the piston rod of the third oil cylinder, i.e., the stop rod 17, so that the first ratchet 201 of the stop ring 22 and the second ratchet 202 of the stop rod 17 are meshed. Since the second ratchet 202 of the stop rod 17 and the first ratchet 201 of the stop ring 22 are mutually unidirectional beveled tooth surfaces, the second ratchet 202 continuously causes the stop ring 22 to overcome the compressive force of the disc spring 23 and separate outwards to release the locking state during the extension of the piston rod of the third oil cylinder, i.e., the stop rod 17. The hydraulic oil in the rod chamber of the reaction booster oil cylinder is discharged back to the oil tank through the sixth oil port CA through the oil passages 103, 104, and 105. Stop supplying oil to the seventh oil port YA, the fourth piston rod 24 extends under the compressive force of the disc spring 23, the hydraulic oil in the rod chamber of the fourth oil cylinder is discharged back to the oil tank through the seventh oil port YA via the oil passage 106, and the backstop ring 22 merges inwardly under the compressive force of the disc spring 23 so that the first ratchet tooth 201 of the backstop ring 22 and the second ratchet tooth 202 of the backstop rod 17 engage and maintain a locked state.

[0054] The sixth oil port CA is supplied with oil, and the pressure oil reaches the rod chamber of the reaction booster cylinder through the oil passages 105, 104 and 103, and the sixth oil port CA is directly connected in parallel with the seventh oil port YA; at this time, since the volume of the rod chamber of the reaction booster cylinder is smaller than the sum of the volumes of the rodless chamber of the reaction booster cylinder and the rodless chamber of the third cylinder, the hydraulic oil in the rodless chamber of the third cylinder has no time to be discharged back to the oil tank to generate back pressure, and the piston rod of the third cylinder, i.e., the stop rod 17, does not retract; the pressure in the rod chamber of the third cylinder continues to increase, and when the pressure in the rod chamber of the third cylinder is greater than the opening pressure of the hydraulic reset mechanism, the hydraulic oil enters the rod chamber of the fourth cylinder through the oil passage 106, and the fourth piston rod 24 overcomes the compression force of the disc spring 23 and retracts, pulling the stop ring 22 to separate outward so that the first ratchet tooth 201 of the stop ring 22 and the second ratchet tooth 202 of the stop rod 17 are separated and the locking state is released; the piston rod of the third cylinder, i.e., the stop rod 17, retracts downward under the action of the hydraulic oil pressure. The hydraulic oil in the rodless chamber of the reaction booster cylinder passes through the oil passage 102, the oil passage 101 and the hydraulic oil in the rodless chamber of the third cylinder, and then passes through the oil passage 100 and is discharged back to the oil tank through the fifth oil port CB.

[0055] In the above technical solution, if the sixth oil port CA and the seventh oil port YA are not connected in parallel through direct connection, the seventh oil port YA is supplied with oil first, and the hydraulic oil enters the rod chamber of the fourth oil cylinder through the oil passage 106, and the fourth piston rod 24 retracts to overcome the compression force of the disc spring 23, pulling the backstop ring 22 to separate outward so that the first ratchet 201 of the backstop ring 22 and the second ratchet 202 of the backstop rod 17 are separated and the locking state is released; then the sixth oil port CA is supplied with oil, and the pressure oil reaches the rod chamber of the reaction booster oil cylinder through the oil passages 105, 104, and 103, and the piston rod of the third oil cylinder, i.e., the backstop rod 17, retracts downward under the action of the hydraulic oil pressure. The hydraulic oil in the rodless chamber of the reaction booster oil cylinder passes through the oil passages 102, 101, and the hydraulic oil in the rodless chamber of the third oil cylinder, and is discharged back to the oil tank through the oil passage 100 through the fifth oil port CB.

[0056] The present application can adjust the workpiece in the horizontal, lateral, longitudinal and vertical directions through the above-mentioned longitudinal movement system, transverse movement system and vertical jacking system to meet the displacement operations of hull welding, railways, roads, bridges or similar beam-type heavy objects; and the above-mentioned follow-up self-locking mechanism maintains the locking tendency of the vertical jacking system during the vertical jacking adjustment process of the vertical jacking system, and immediately locks the vertical jacking system after the vertical jacking adjustment of the vertical jacking system is completed. The control method of the above-mentioned follow-up self-locking mechanism is simple and easy to control, highly effective and highly safe; the hydraulic reset mechanism in the present application connects the oil circuit of the vertical jacking system with the follow-up self-locking mechanism, so that the entire control process is more automated and does not require manual intervention.

[0057] The above embodiments are only used to illustrate the technical solution of the present application but not to limit it. The present application is described in detail with reference to the preferred embodiments. It should be understood by those skilled in the art that the technical solution of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application, and should be included in the scope of the claims of the present application.

Claims

1. Follow-up self-locking three-dimensional jack, characterized in that: include: A longitudinal movement system, a transverse movement system, a vertical lifting system and a follow-up self-locking mechanism, wherein the longitudinal movement system is connected to the transverse movement system and drives the transverse movement system to move longitudinally, and the transverse movement system is also connected to the vertical lifting system and drives the vertical lifting system to move laterally, and the vertical lifting system is used to move in the vertical direction; the follow-up self-locking mechanism is movably connected to the vertical lifting system, and the follow-up self-locking mechanism locks the vertical lifting system or releases the locking of the vertical lifting system; The longitudinal movement system comprises: a first cylinder, a first piston rod, a first guide sleeve and a first box, wherein the first cylinder is fixedly mounted on the first box, the first end of the first piston rod is slidably sleeved in the first cylinder, the second end of the first piston rod is fixedly mounted on the transverse movement system, the first guide sleeve is mounted in the first cylinder and slidably sleeved on the first end of the first piston rod; the first cylinder is also provided with a first oil port and a second oil port; the transverse movement system comprises: a second cylinder, a second piston rod, a second guide sleeve and a second box, wherein the second cylinder is fixedly mounted on the second box, the first end of the second piston rod is slidably sleeved in In the second cylinder, the second end of the second piston rod is fixedly mounted on the vertical jacking system, and the second guide sleeve is mounted in the second cylinder and slidably sleeved on the second end of the second piston rod; the second cylinder is also provided with a third oil port and a fourth oil port; the vertical jacking system comprises: a third cylinder, a third piston rod, a third guide sleeve, a third piston, a stop rod and a cylinder head, the stop rod is slidably sleeved in the inner hole of the third cylinder, the third piston is slidably sleeved in the inner hole of the stop rod and mounted on the upper end of the third piston rod, the lower end of the third piston rod is fixedly mounted on the lower end of the third cylinder, and the third guide sleeve is mounted on the The cam is installed in the inner hole at the lower end of the stop rod and slidably sleeved on the third piston rod, and the cylinder head is installed in the inner hole at the upper end of the stop rod; the third cylinder is also connected to the lateral movement system; the third cylinder is also provided with a fifth oil port and a sixth oil port; the vertical jacking system also includes: a pushing body, which is used to push the workpiece, and the pushing body is arranged on the cylinder head; the follow-up self-locking mechanism includes: a stop ring, a disc spring, a fourth piston rod and a fourth cylinder, the stop ring is arranged on the third cylinder and movably connected to the stop rod, the fourth piston rod is slidably sleeved in the inner hole of the fourth cylinder, and the fourth piston rod is also connected to the The stop ring is fixedly connected, and the fourth cylinder is also detachably connected to the third cylinder; the disc spring is sleeved on the fourth piston rod, and one end of the disc spring is in contact with the stop ring, and the second end of the disc spring is in contact with the fourth cylinder; the fourth cylinder is also provided with a seventh oil port; the follow-up self-locking mechanism also includes a cap, which is screwed on the third cylinder; it also includes a hydraulic reset mechanism, which connects the seventh oil port with the fifth oil port. Under the action of the hydraulic reset mechanism, the follow-up self-locking mechanism overcomes the compression force of the disc spring and releases the locking of the vertical jacking system by the follow-up self-locking mechanism.

2. The follow-up self-locking three-dimensional jack according to claim 1 is characterized in that: The anti-backward ring is provided with a first ratchet tooth, the anti-backward rod is provided with a second ratchet tooth, and the first ratchet tooth and the second ratchet tooth are matched and arranged.

3. The follow-up self-locking three-dimensional jack according to claim 2 is characterized in that: The first ratchet tooth or the second ratchet tooth includes a plurality of continuous unidirectional bevel tooth surfaces.

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