Automatic continuous rotation jack

Abstract

The utility model relates to an automatic continuous swivel jack which comprises a rear jacking assembly and a front jacking assembly which are arranged at intervals, the rear jacking assembly is fixedly connected with the front jacking assembly, and the rear jacking assembly comprises a rear jacking center penetrating sleeve, a rear jacking oil cylinder, a rear jacking piston and a rear jacking sealing plate. The rear top anchor plate and the rear top clamping piece are installed in the conical hole of the rear top anchor plate and comprise three clamping piece split bodies, each clamping piece split body is formed by cutting a conical sleeve into three parts, the clamping piece split bodies surround the traction cable, a steel ring is arranged at the right end of each clamping piece split body for hooping, the left end of the rear top clamping piece extends leftwards out of the conical hole by a section, and a limiting flange is arranged at the left end of the rear top clamping piece; the front jacking assembly and the rear jacking assembly are consistent in structure, and each front jacking assembly comprises a front jacking center penetrating sleeve, a front jacking oil cylinder, a front jacking piston, a front jacking sealing plate, a front jacking anchor plate, a front jacking clamping piece, a front jacking oil return nozzle and a front jacking oil inlet nozzle. The clamping piece and the anchor plate are not easy to separate, so that stable and continuous traction is favorably formed.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction, and in particular to an automatic continuous rotating jack. Background Technology

[0002] During bridge rotation construction, a type of jack is needed to achieve continuous traction. For example, Chinese Utility Model Announcement No. CN 204675740 U discloses an alternating limit tensioning continuous lifting jack, which can achieve continuous tensioning with a single jack. It includes a through-type jack, an inner limit tensioning component, an outer limit tensioning component, and a lifting element. It achieves tensioning through the alternating cooperation of the inner and outer limit tensioning components. However, the clamps and anchor plates of this jack are prone to detachment, which is not conducive to forming stable traction. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an automatic continuous rotating jack whose clamping plates and anchor plates are not easy to detach, and can still stably clamp the traction cable after the piston resets during the alternating traction process.

[0004] To solve the above problems, an automatic continuous rotating jack is adopted, which includes a rear jacking assembly and a front jacking assembly arranged at intervals. The rear jacking assembly is fixedly connected to the front jacking assembly, and the rear jacking assembly includes:

[0005] The rear top through-hole sleeve has a laterally extending hollow tube in its middle section for connecting the traction cable. The left end of the hollow tube has a flange.

[0006] The rear-mounted cylinder is used to supply hydraulic oil, and its side wall is provided with a rear-mounted return oil nozzle and a rear-mounted inlet oil nozzle at intervals.

[0007] The rear piston is installed in the rear cylinder. A flange is provided at its left end. A raised strip is provided on the circumference of the flange, which is close to the inner wall of the rear cylinder. The raised strip is narrower than the flange and divides the internal space of the rear cylinder into a left space and a right space. The rear return oil nozzle is connected to the right space and the rear inlet oil nozzle is connected to the left space. A groove is provided in the middle of the rear piston to slide and connect to the rear through sleeve.

[0008] With this structure, the rib is narrower than the flange, leaving space for oil inlet between the rib and the flange. This prevents the piston from blocking the oil nozzle after moving to the end, thus preventing oil from entering and providing pressure.

[0009] The rear top sealing plate is fixed to the inner wall of the right end of the rear top cylinder and slides through the rear top piston.

[0010] The rear top anchor plate, installed at the right end of the rear top piston, has multiple tapered holes in the middle for multiple traction cables to pass through.

[0011] The rear top clamp piece is installed in the conical hole of the rear top anchor plate, and comprises three clamp piece parts, which are cut from a conical sleeve in three parts, surround the traction cable, and are tightly arranged at the right end of the clamp piece part by a steel ring, and the left end of the clamp piece part extends out of the conical hole by a section and is provided with a limiting flange at the left end.

[0012] With the structure, when the rear top anchor plate moves forward, the traction cable is pulled, the surface of the traction cable is not smooth, the steel strand is usually arranged in a multi-strand winding structure, the traction cable applies a counterforce, the clamp piece part moves along the conical hole, and the clamp piece part is tightened; when the rear top anchor plate stops and the traction cable is pulled, the limiting flange prevents the clamp piece part from being pulled out of the upper end of the conical hole of the rear top clamp piece, and when the rear top anchor plate moves backward, the limiting flange prevents the rear top clamp piece from being separated, so that the rear top clamp piece moves backward and resets.

[0013] The front top assembly and the rear top assembly are consistent in structure, and comprise a front top through sleeve, a front top oil cylinder, a front top piston, a front top sealing plate, a front top anchor plate, a front top clamp piece, a front top oil return nozzle and a front top oil inlet nozzle.

[0014] As a further improvement of the utility model, a first support is arranged between the rear top assembly and the front top assembly, and a second support is arranged on the front top sealing plate; a first travel switch, a second travel switch and a third travel switch are arranged on the first support at intervals, and a fourth travel switch, a fifth travel switch and a sixth travel switch are arranged on the second support at intervals.

[0015] With the structure, the top of the travel switch has a contact, and after the rear top anchor plate or the front top anchor plate hits the contact, the position of the main control console can be fed back, and the main control console can arrange oil supply measures at each position; when the front top anchor plate moves to the maximum stroke and contacts the contact of the sixth travel switch, the contact is pressed down to connect the sensor circuit, the sensor immediately transmits the position signal of the front top piston to the main control console, the main control console transmits the obtained signal to the hydraulic pump station, the hydraulic pump station controls the movement of the front top piston, the front top piston stops working immediately, the front top oil return nozzle is opened, the front top oil inlet nozzle is closed, the rear top piston starts working, the rear top oil inlet nozzle is opened, the rear top oil return nozzle is closed, the rear top clamp piece clamps the steel strand, and the rear top piston moves forward; when the rear top piston reaches the maximum stroke, the rear top piston contacts the third travel switch again, and according to the same principle, the front top piston is triggered. The front top piston and the rear top piston are repeatedly and alternately circulated to achieve continuous and uniform pushing operation; the travel switch gives corresponding position information.

[0016] As a further improvement of the utility model, a plurality of reverse one-way valves are arranged on the convex strips of the rear top piston.

[0017] With the structure, when the oil nozzle on one side of the piston is closed and the oil nozzle on the other side supplies oil, hydraulic oil on the side of the closed oil nozzle can be extruded to the oil nozzle on the oil-supplying side, so that the piston moves more smoothly, and the small one-way valve facilitates the exchange of hydraulic oil while ensuring a pressure difference and maintaining the one-way movement of the piston.

[0018] As a further improvement of the utility model, the one-way valve comprises a shell, a channel in the shell and a ball installed in the channel, the channel is a variable cross-section channel, the cross sections at both ends are rectangular, the rectangular cross section at one end is larger than that at the other end, the cross section in the middle is a circular cross section, the circular cross section is matched with the ball, a limiting plate is further arranged at the larger rectangular cross section in the channel, the limiting plate is spaced from the circular cross section and located on both sides of the ball, and a center hole and a marginal hole are formed in the limiting plate.

[0019] With the structure, the ball moves left and right under the action of the pressure difference, when the ball blocks the circular cross section of the channel under the action of the pressure difference, the whole channel is completely blocked and no longer conducts, and when the ball blocks the limiting plate under the action of the pressure difference, the limiting plate cannot be completely blocked due to the rectangular cross section, so that one-way conduction is realized.

[0020] As a further improvement of the utility model, the split clamping piece is rounded at the left end.

[0021] With the structure, the split clamping piece is more easily passed through by the traction cable.

[0022] As a further improvement of the utility model, the third travel switch and the sixth travel switch are electrically connected with the main control console, the main control console is electrically connected with the hydraulic pump station, and the hydraulic pump station is divided into four oil paths and is connected with the rear top oil return nozzle, the rear top oil inlet nozzle, the front top oil return nozzle and the front top oil inlet nozzle.

[0023] With the structure, the main control console can receive the signals of the travel switches and control the opening or closing of the corresponding oil nozzles.

[0024] The utility model is favorable for forming more stable and smooth traction force to rotate the body. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a layout schematic view of the jack.

[0026] Figure 2 It is a structure schematic view of the embodiment.

[0027] Figure 3 It is a structure schematic view of the rear top anchor plate.

[0028] Figure 4 It is a back structure schematic view of the rear top anchor plate.

[0029] Figure 5It is a structure schematic view of the one-way valve.

[0030] Figure 6 It is a structure schematic view of the one-way valve.

[0031] Figure 7 It is a structure schematic view of the one-way valve.

[0032] Figure 8 It is a structure schematic view of the one-way valve.

[0033] Figure 9 It is a structure schematic view of the one-way valve.

[0034] The drawings show that the utility model discloses a concrete rotating table, the first traction counterforce seat, the second traction counterforce seat, the first counterforce frame, the second counterforce frame, the first automatic continuous rotation body jack, the rear top through core cover, the rear top oil cylinder, the rear top oil return nozzle, the rear top oil inlet nozzle, the rear top piston, the convex strip, the one-way valve, the shell, the passageway, the ball, the circular section, the limiting plate, the center hole, the edge hole, the rear top sealing plate, the rear top anchor plate, the rear top clamping piece, the clamping piece split body, the steel ring, the limiting flange, the front top through core cover, the front top oil cylinder, the front top oil return nozzle, the front top oil inlet nozzle, the front top piston, the front top sealing plate, the front top anchor plate, the front top clamping piece, the second automatic continuous rotation body jack, the hydraulic pump station, the first support, the second support, the first stroke switch, the second stroke switch, the third stroke switch, the fourth stroke switch, the fifth stroke switch, the sixth stroke switch and the main control console are arranged on the concrete rotating table. DETAILED DESCRIPTION

[0035] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor are within the protection scope of the utility model.

[0036] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] Example 1

[0038] like Figures 1-9 As shown, an automatic continuous rotating jack includes a rear jack assembly and a front jack assembly arranged at intervals, wherein the rear jack assembly is fixedly connected to the front jack assembly, and the rear jack assembly includes:

[0039] The rear top through-hole sleeve 701 has a laterally extending hollow tube in its middle part for connecting the traction cable 1. The left end of the hollow tube has a flange.

[0040] The rear-mounted cylinder 702 is used to introduce hydraulic oil, and its side wall is provided with a rear-mounted return oil nozzle 7021 and a rear-mounted inlet oil nozzle 7022 at intervals.

[0041] The rear piston 703 is installed in the rear cylinder 702. A flange is provided at its left end. A raised strip 7031 is provided on the circumference of the flange, which is close to the inner wall of the rear cylinder 702. The raised strip is narrower than the flange and divides the internal space of the rear cylinder 702 into a left space and a right space. The rear return oil nozzle 7021 connects to the right space, and the rear inlet oil nozzle 7022 connects to the left space. A groove is provided in the middle of the rear piston 703 to slide and connect to the rear through sleeve 701.

[0042] With this structure, the rib is narrower than the flange, leaving space for oil inlet between the rib and the flange. This prevents the piston from blocking the oil nozzle after moving to the end, thus preventing oil from entering and providing pressure.

[0043] The rear top sealing plate 704 is fixed to the inner wall of the right end of the rear top cylinder 702 and is slidably passed through by the rear top piston 703.

[0044] A rear top anchor plate 705 is installed at the right end of the rear top piston 703, and a plurality of tapered holes are arranged in the middle part of the rear top anchor plate 705 for the plurality of traction cables 1 to pass through.

[0045] A rear top clamp 706 is installed in the tapered hole of the rear top anchor plate 705, and the rear top clamp 706 includes three clamp parts 7061, which are cut from a tapered sleeve into three parts. The clamp parts 7061 surround the traction cables 1, and a steel ring 7062 is arranged at the right end of the clamp parts 7061 to tighten the clamp parts 7061. The left end of the rear top clamp 706 extends out of the tapered hole to the left, and a limiting flange 7063 is arranged at the left end.

[0046] With such a structure, when the rear top anchor plate 705 moves forward, the traction cables 1 are pulled. The surface of the traction cables 1 is not smooth, and the steel strands are usually wound in multiple strands. When the clamp parts 7061 move along the tapered hole under the action of the traction cables 1, the clamp parts 7061 are tightened. When the rear top anchor plate 705 stops and the traction cables 1 are pulled, the limiting flange 7063 prevents the clamp parts 7061 from being pulled out of the tapered hole at the upper end of the rear top clamp 706. When the rear top anchor plate 705 moves backward, the limiting flange 7063 prevents the rear top clamp 706 from being separated, so that the rear top clamp 706 also moves backward and returns to the original position.

[0047] The front top assembly is consistent with the structure of the rear top assembly, and includes a front top through sleeve 707, a front top oil cylinder 708, a front top piston 709, a front top sealing plate 7010, a front top anchor plate 7011, a front top clamp 7012, a front top oil return nozzle 7081, and a front top oil inlet nozzle 7082.

[0048] In this embodiment, a first support 10 is arranged between the rear top assembly and the front top assembly, and a second support 11 is arranged on the front top sealing plate 7010. A first travel switch 12, a second travel switch 13, and a third travel switch 14 are arranged on the first support 10 at intervals, and a fourth travel switch 15, a fifth travel switch 16, and a sixth travel switch 17 are arranged on the second support 11 at intervals.

[0049] With such structure, the top of the travel switch has a contact, after the rear top anchor plate 705 or the front top anchor plate 7011 hits the contact, the position of the main console 18 can be fed back, and the main console 18 can arrange oil supply measures at each position, when the front top anchor plate 7011 moves to the maximum stroke and contacts the contact of the sixth travel switch 17, the contact is pressed to turn on the sensor circuit, the sensor immediately transmits the position signal of the front top piston 709 to the main console 18, the main console transmits the obtained signal to the hydraulic pump station, and the hydraulic pump station controls the action of the front top piston 709, the front top piston 709 stops working immediately, the front top oil return nozzle 7081 is opened, the front top oil inlet nozzle 7082 is closed, and at the same time, the rear top piston 703 starts to work, the rear top oil inlet nozzle 7022 is opened, the rear top oil return nozzle 7021 is closed, and the rear top clamping piece 706 clamps the steel strand 1, the rear top piston 703 moves forward, and the rear top piston 703 reaches the maximum stroke and contacts the third travel switch 14, according to the same principle, the front top piston 709 works. The front top piston 709 and the rear top piston 703 are repeatedly alternately circulated to achieve continuous and uniform pushing operation; the travel switch gives corresponding position information.

[0050] In the embodiment, a plurality of reverse one-way valves 7032 are installed on the convex strips of the rear top piston 703.

[0051] With such structure, when the oil nozzle on one side of the piston is closed and the oil nozzle on the other side is supplied with oil, the hydraulic oil on the side of the closed oil nozzle can be squeezed to the oil nozzle on the oil supply side, so that the piston moves more smoothly, and a small amount of one-way valve facilitates the exchange of hydraulic oil while ensuring the pressure difference and maintaining the one-way movement of the piston.

[0052] In the embodiment, the one-way valve 7032 includes a shell 7033, a channel 7034 in the shell 7033, and a ball 7035 installed in the channel 7034, the channel 7034 is a variable cross-section channel, both ends of the channel 7034 are rectangular cross-sections, one end of the rectangular cross-section is larger than the other end, and the middle part is a circular cross-section 7036, the circular cross-section 7036 is matched with the ball 7035, the larger rectangular cross-section of the channel 7034 is further provided with a limiting plate 7037, the limiting plate 7037 is spaced from the circular cross-section 7036 and located on both sides of the ball 7035, and the limiting plate 7037 is provided with a center hole 7038 and an edge hole 7039.

[0053] With such structure, the ball 7035 moves left and right under the action of the pressure difference, when the ball 7035 blocks the circular cross-section of the channel 7034 under the action of the pressure difference, the whole channel is completely blocked and no longer conducts, and when the ball 7035 blocks the limiting plate 7037 under the action of the pressure difference, the limiting plate 7037 cannot be completely blocked due to the rectangular cross-section, so that one-way conduction is realized.

[0054] In the embodiment, the left end of the clamping piece is chamfered.

[0055] With the structure, the left end of the clamping piece is easier to pass the traction cable.

[0056] In the embodiment, the third stroke switch 14 and the sixth stroke switch 17 are electrically connected to the main console 18, the main console 18 is electrically connected to the hydraulic pump station 9, and the hydraulic pump station 9 is divided into four oil paths, which are respectively connected to the rear top back oil nozzle 7021, the rear top inlet oil nozzle 7022, the front top back oil nozzle 7081 and the front top inlet oil nozzle 7082.

[0057] With the structure, the main console can receive the signal of the stroke switch and control the corresponding oil nozzle to open or close.

[0058] Embodiment 2

[0059] As shown in Figures 1-9 Fig. 1, a overpass rotation system traction equipment based on the automatic continuous rotation jack in embodiment 1, which comprises:

[0060] traction cables 1, one end of which is anchored on the concrete rotating platform 2 and then connected out after winding the concrete rotating platform 2, two traction cables 1 are connected out of the concrete rotating platform 2 in a central symmetric way, and the connected out sections of the two traction cables 1 are parallel and opposite in direction;

[0061] a first traction counterforce seat 3, which is provided on the connected out section of one traction cable 1, is transversely perforated and is penetrated by the traction cable 1;

[0062] a second traction counterforce seat 4, which is provided on the connected out section of the other traction cable 1, is transversely perforated and is penetrated by the traction cable 1;

[0063] a first counterforce frame 5, which is installed on one side of the first traction counterforce seat 3;

[0064] a second counterforce frame 6, which is installed on one side of the second traction counterforce seat 4;

[0065] a first automatic continuous rotation jack 7, which is transversely arranged on the first counterforce frame 5 and penetrates the traction cable 1;

[0066] a second automatic continuous rotation jack 8, which is transversely arranged on the second counterforce frame 6 and penetrates the traction cable 1, has the same structure as the first automatic continuous rotation jack 7;

[0067] Hydraulic pump station 9, two, respectively, the first automatic continuous swivel jack 7 and the second automatic continuous swivel jack 8, supply hydraulic oil; Each hydraulic pump station 9 has 4 oil circuits to access the first automatic continuous swivel jack 7 and the second automatic continuous swivel jack 8, and each cylinder of the first automatic continuous swivel jack 7 and the second automatic continuous swivel jack 8 accesses 2 oil circuits; 2 oil circuits are accessed on both sides of the piston.

[0068] With such a structure, the oil supply is controlled by the hydraulic pump station 9, and the hydraulic oil is supplied to both sides of the piston. When one side is supplied with oil and the other side is closed with an oil nozzle, the piston can be pushed by the hydraulic oil on one side to generate traction. The two sides are alternately supplied with oil, which is beneficial to the continuous left and right movement of the piston to achieve continuous traction.

[0069] The above is a further detailed description of the present application in combination with a specific preferred embodiment, which cannot be considered as limiting the specific implementation of the present application to these descriptions. For those skilled in the art to which the present application belongs, without departing from the concept of the present application, a number of equivalent alternatives or obvious modifications can be made, and the performance or use is the same, which should be considered as belonging to the protection scope of the present application.

Claims

1. An automatic continuous swivel jack, characterized by The back top assembly and the front top assembly are arranged at intervals, the back top assembly is fixed with the front top assembly, and the back top assembly comprises: A back top core sleeve (701) with a transversely extending hollow tube in the middle for connecting a traction cable (1), and a flange at the left end of the hollow tube; A back top oil cylinder (702) for passing hydraulic oil, with a back top oil return nozzle (7021) and a back top oil inlet nozzle (7022) arranged at intervals on the side wall; A back top piston (703) installed in the back top oil cylinder (702), with a flange at the left end, a flange surface provided with a flange (7031) closely attached to the inner side wall of the back top oil cylinder (702), the flange being narrower than the flange and dividing the internal space of the back top oil cylinder (702) into left and right spaces, the back top oil return nozzle (7021) being connected to the right space and the back top oil inlet nozzle (7022) being connected to the left space; a recess is arranged in the middle of the back top piston (703) to slidably connect the back top core sleeve (701); A back top sealing plate (704) fixed to the inner side wall of the right end of the back top oil cylinder (702) and slid through by the back top piston (703); A back top anchor plate (705) installed at the right end of the back top piston (703) and provided with multiple tapered holes in the middle for passing multiple traction cables (1); A back top clamping piece (706) installed in the tapered hole of the back top anchor plate (705), comprising three clamping piece parts (7061) cut from a tapered sleeve, the clamping piece parts (7061) surrounding the traction cable (1), a steel ring (7062) arranged at the right end of the clamping piece parts (7061) to tighten, and the left end of the back top clamping piece (706) extending out of the tapered hole by a section to the left and provided with a limiting flange (7063) at the left end; The front top assembly is consistent with the back top assembly in structure, comprising a front top core sleeve (707), a front top oil cylinder (708), a front top piston (709), a front top sealing plate (7010), a front top anchor plate (7011), a front top clamping piece (7012), a front top oil return nozzle (7081) and a front top oil inlet nozzle (7082).

2. The automatic continuous swivel jack according to claim 1, wherein The first support (10) is arranged between the back top assembly and the front top assembly, the second support (11) is arranged on the front top sealing plate (7010), the first travel switch (12), the second travel switch (13) and the third travel switch (14) are arranged at intervals on the first support (10), and the fourth travel switch (15), the fifth travel switch (16) and the sixth travel switch (17) are arranged at intervals on the second support (11).

3. The automatic continuous swivel jack according to claim 1, wherein Multiple reverse one-way valves (7032) are installed on the flange of the back top piston (703).

4. The automatic continuous swivel jack according to claim 3, wherein The one-way valve (7032) comprises a shell (7033), a channel (7034) in the shell (7033), and a ball (7035) installed in the channel (7034), the channel (7034) is a variable cross-section channel, the cross sections of both ends are rectangular, the rectangular cross section of one end is larger than that of the other end, the middle part is a circular cross section (7036), the circular cross section (7036) is matched with the ball (7035), a limiting plate (7037) is arranged at the larger rectangular cross section of the channel (7034), the limiting plate (7037) is spaced from the circular cross section (7036) and located on both sides of the ball (7035), a center hole (7038) and an edge hole (7039) are formed in the limiting plate (7037).

5. The automatic continuous swivel jack of claim 1, wherein The left end of the clamping piece split body (7061) is chamfered.

6. The automatic continuous swivel jack according to claim 2, wherein The third stroke switch (14) and the sixth stroke switch (17) are electrically connected with a main control table (18), the main control table (18) is electrically connected with a hydraulic pump station (9), the hydraulic pump station (9) is divided into four oil paths, which are communicated with a rear top back oil nozzle (7021), a rear top inlet oil nozzle (7022), a front top back oil nozzle (7081) and a front top inlet oil nozzle (7082).

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