Jacking device and tensioning jack

Abstract

The invention provides a jacking device and a tensioning jack. The jacking device comprises a shell, a jacking assembly, a transmission mechanism and a driving gear, the shell is provided with a first opening and a second opening which are communicated with an inner cavity of the shell and are oppositely arranged, the jacking assembly is arranged at the first opening and can move in the axial direction of the first opening, and the jacking assembly is provided with a channel penetrating in the axial direction of the first opening; the driving gear and the transmission mechanism are both arranged in the inner cavity of the shell, the driving gear can be controlled to pivot, and the transmission mechanism is connected between the driving gear and the jacking assembly so as to drive the jacking assembly to move under the driving of the driving gear. According to the jacking device, the jacking assembly is driven by the driving gear and the transmission mechanism to move, so that the movement amount of the jacking assembly cannot be attenuated under the same pivoting angle of the driving gear, and it is ensured that qualified pre-tightening force is applied to the anchor cable. And meanwhile, the stroke of the jacking assembly is adjusted by the pivoting angle of the driving gear, so that the stroke of the jacking assembly can be suitable for anchor cables of different models.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tensioning equipment, in particular to a top pressure device and a tensioning jack. BACKGROUND

[0002] The top pressure device is one of the core components of the tensioning jack, which is used to push the clamping piece in the anchor cable anchor into the anchor ring to realize the anchoring of the anchor cable anchor and the anchor cable body. In the related art, the top pressure device adopts a structure that the spring drives the top anchor pipe to move to press the clamping piece. However, the spring has elastic attenuation, and after long-term use, the stroke of the top pressure device for moving the clamping piece is insufficient, resulting in a decrease in the pre-tightening force of the anchor cable. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art to some extent.

[0004] To this end, an embodiment of the present application provides a top pressure device and a tensioning jack using the same.

[0005] The top pressure device of the embodiment of the present application comprises:

[0006] The housing is provided with a first opening and a second opening which are in communication with the inner cavity of the housing and oppositely arranged, the top pressure assembly is arranged at the first opening and movable along the axial direction of the first opening, the top pressure assembly is provided with a channel penetrating along the axial direction of the first opening, the driving gear and the transmission mechanism are arranged in the inner cavity of the housing, the driving gear is controllably pivotable, and the transmission mechanism is connected between the driving gear and the top pressure assembly to drive the top pressure assembly to move under the driving of the driving gear.

[0007] The top pressure device of the embodiment of the present application, the top pressure assembly is used to abut against the clamping piece of the anchor cable anchor, the driving gear drives the top pressure assembly to move through the transmission mechanism, so that the clamping piece moves along the axial direction of the anchor ring, thereby tensioning the anchor cable. Since the top pressure assembly moves under the driving of the driving gear and the transmission mechanism, the movement amount of the top pressure assembly will not be attenuated under the same pivot angle of the driving gear, so as to ensure that the anchor cable is applied with qualified pre-tightening force. At the same time, the stroke of the top pressure assembly is adjusted by the pivot angle of the driving gear, so that the stroke of the top pressure assembly can be suitable for anchor cables of different models.

[0008] In some embodiments, the transmission mechanism comprises a driven gear, a screw rod assembly, and a connecting rod, the screw rod assembly is pivotably connected with the housing, the driven gear is arranged on the screw rod assembly and connected with the driving gear to drive the screw rod assembly to pivot under the driving of the driving gear, one end of the connecting rod is pivotably connected with the screw rod assembly and movable along the axial direction of the screw rod assembly under the driving of the screw rod assembly, the other end of the connecting rod is pivotably connected with the pressing assembly, so that the connecting rod drives the pressing assembly to move when the screw rod assembly pivots.

[0009] In some embodiments, the transmission mechanism comprises a first transmission assembly and a second transmission assembly arranged oppositely, the driving gear is connected between the driven gear of the first transmission assembly and the driven gear of the second transmission assembly, the connecting rod of the first transmission assembly and the connecting rod of the second transmission assembly drive the pressing assembly to move in the same direction when the driving gear pivots.

[0010] In some embodiments, the driving gear is orthogonal to the driven gear, the driving gear and the driven gear are arranged spaced apart from both the channel and the second opening along the transverse direction of the second opening.

[0011] In some embodiments, the pressing device further comprises a support arranged in the inner cavity of the housing and located on the side of the screw rod assembly away from the connecting rod, one end of the support is connected with the screw rod assembly and movable along the axial direction of the screw rod assembly under the driving of the screw rod assembly, the other end of the support is connected with the housing and movable along the axial direction of the screw rod assembly.

[0012] In some embodiments, the pressing assembly comprises a first member and a second member, the first member and the second member are annular and surround the channel, the first member and the second member are threadedly connected and relatively movable along the axial direction of the channel, the first member or the second member is connected with the transmission mechanism.

[0013] In some embodiments, the first member has a first end and a second end arranged oppositely along the axial direction, the outer diameter of the first end is larger than that of the second end, so that an abutting surface is formed between the first end and the second end, the second member is arranged on the outer periphery of the second end and threadedly connected with the second end, the second member is connected with the transmission mechanism.

[0014] In some embodiments, the pressing assembly further comprises a connecting seat provided with a through hole, the through hole communicates the channel and the inner cavity of the housing, the second member is arranged on one end of the connecting seat, the other end of the connecting seat is connected with the transmission mechanism.

[0015] The first opening is provided with a stepped surface for abutting against the connecting seat to define a limit position of the connecting seat moving in a direction away from the inner cavity of the shell.

[0016] In some embodiments, the top presser further comprises a connecting shaft coaxially connected with the driving gear, one end of the connecting shaft away from the driving gear penetrates to the outside of the shell and has a connecting part for detachably connecting a driving member to drive the driving gear to pivot.

[0017] The tensioning jack of the embodiment of the present application comprises:

[0018] The hydraulic cylinder and the top presser, the top presser being the top presser of any one of the above embodiments, the shell being arranged at the hydraulic cylinder and used for abutting against an anchor ring of an anchor cable anchor, and the top press assembly being used for abutting against a clamping piece of the anchor cable anchor and driving the clamping piece to move along an axial direction of the anchor ring.

[0019] The tensioning jack of the embodiment of the present application can ensure that the qualified pre-tightening force is applied to the anchor cable and can be applied to different models of anchor cables by using the top presser of the embodiment of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic view of the top presser of the embodiment of the present application;

[0021] Figure 2 is Figure 1 is a top view of the first member of the top presser in the embodiment of the present application;

[0022] Figure 3 is a side view of the driving gear and the connecting shaft of the top presser of the embodiment of the present application.

[0023] REFERENCE NUMERALS:

[0024] 1, shell; 11, inner cavity; 12, first opening; 13, second opening; 14, stepped surface; 2, top press assembly; 21, channel; 22, first member; 23, second member; 24, abutting surface; 25, connecting seat; 26, through hole; 27, connecting hole; 3, transmission mechanism; 31, driven gear; 32, screw assembly; 33, connecting rod; 34, first transmission assembly; 35, second transmission assembly; 4, driving gear; 5, support member; 6, connecting shaft; 61, connecting part. DETAILED DESCRIPTION

[0025] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0026] Reference will now be made to Figures 1-3 A top presser and a tensioning jack according to embodiments of the present application are described.

[0027] As Figures 1-3 shown, the top presser according to embodiments of the present application comprises a housing 1, a top pressing assembly 2, a transmission mechanism 3 and a driving gear 4.

[0028] The housing 1 is provided with a first opening 12 and a second opening 13 which are in communication with the inner cavity 11 of the housing 1 and oppositely arranged. As Figure 1 shown, the housing 1 is provided with an inner cavity, the top end of the housing 1 is provided with the first opening 12 which penetrates the housing wall of the housing 1 along the vertical direction, the bottom end of the housing 1 is provided with the second opening 13 which penetrates the housing wall of the housing 1 along the vertical direction, and the first opening 12 and the second opening 13 are oppositely arranged along the vertical direction.

[0029] The top pressing assembly 2 is arranged in the first opening 12 and movable along the axial direction of the first opening 12, and the top pressing assembly 2 is provided with a channel 21 which penetrates along the axial direction of the first opening 12. As Figure 1 shown, the top pressing assembly 2 is arranged in the first opening 12 and movable relative to the first opening 12 along the vertical direction, so that the top end of the top pressing assembly 2 can be extended upwardly from the first opening 12, and the top pressing assembly 2 is provided with the channel 21 which penetrates the top pressing assembly 2 along the vertical direction, the channel 21 is in communication with the inner cavity 11 of the housing 1 and oppositely arranged with the second opening 13 along the vertical direction.

[0030] The driving gear 4 and the transmission mechanism 3 are both arranged in the inner cavity 11 of the housing 1, the driving gear 4 is controllably pivoted, and the transmission mechanism 3 is connected between the driving gear 4 and the top pressing assembly 2 to drive the top pressing assembly 2 to move under the driving of the driving gear 4. As Figure 1 shown, the driving gear 4 and the transmission mechanism 3 are both arranged in the inner cavity 11 of the housing 1 and located below the top pressing assembly 2, the driving gear 4 is controllably pivoted, and the transmission mechanism 3 is meshingly connected with the driving gear 4 and connected with the bottom end of the top pressing assembly 2.

[0031] In use, the grommet of the anchor cable anchor is abutted against the top surface of the housing 1, the clamping piece of the anchor cable anchor is abutted against the top surface of the top pressing assembly 2, the anchor cable passing through the clamping piece extends downwardly and sequentially passes through the channel 21, the inner cavity 11 and the second opening 13, and the driving gear 4 drives the top pressing assembly 2 to move along the vertical direction through the transmission mechanism 3 when the driving gear 4 rotates, so that the top pressing assembly 2 drives the clamping piece to move up and down in the grommet, so as to clamp and release the anchor cable by the clamping piece, thereby tensioning the anchor cable.

[0032] The top pressing device of the embodiment of the present application, the top pressing assembly 2 is used for abutting against the clamping piece of the anchor cable anchorage device, the driving gear 4 drives the top pressing assembly 2 to move through the transmission mechanism 3, so that the clamping piece moves along the axial direction of the anchor ring, thereby tensioning the anchor cable. Since the top pressing assembly 2 moves under the driving of the driving gear 4 and the transmission mechanism 3, the movement amount of the top pressing assembly 2 will not be attenuated under the same pivot angle of the driving gear 4, so as to ensure that the qualified pre-tightening force is applied to the anchor cable. Meanwhile, the stroke of the top pressing assembly 2 is adjusted by the pivot angle of the driving gear 4, so that the stroke of the top pressing assembly 2 can be suitable for anchor cables of different models.

[0033] In some embodiments, the transmission mechanism 3 comprises a driven gear 31, a screw rod assembly 32 and a connecting rod 33, the screw rod assembly 32 is pivotably connected with the housing 1, the driven gear 31 is arranged on the screw rod assembly 32 and connected with the driving gear 4, so as to drive the screw rod assembly 32 to pivot under the driving of the driving gear 4, one end of the connecting rod 33 is pivotably connected with the screw rod assembly 32 and movable along the axial direction of the screw rod assembly 32 under the driving of the screw rod assembly 32, the other end of the connecting rod 33 is pivotably connected with the top pressing assembly 2, so that the connecting rod 33 drives the top pressing assembly 2 to move when the screw rod assembly 32 pivots.

[0034] As shown in Figure 1 , the screw rod assembly 32 is preferably but not limited to a ball screw, the screw rod body of the screw rod assembly 32 extends along the left-right direction, the nut of the screw rod assembly 32 is movable along the screw rod body when the screw rod body rotates around the left-right direction, one end of the screw rod body along the left-right direction is pivotably connected with the housing 1, preferably, a bearing is arranged between the one end of the screw rod body and the shell wall of the housing 1. The other end of the screw rod body along the left-right direction is provided with the driven gear 31, the driven gear 31 is meshingly connected with the driving gear 4.

[0035] The bottom end of the connecting rod 33 is pivotably hinged to the nut of the screw rod assembly 32 around the front-rear direction (as shown in Figure 1 , the direction perpendicular to the paper surface), and the top end of the connecting rod 33 is pivotably hinged to the bottom end of the top pressing assembly 2 around the front-rear direction.

[0036] The driving gear 4 drives the driven gear 31 and the screw rod body to rotate, the screw rod body drives the nut and the bottom end of the connecting rod 33 to move along the left-right direction, so as to drive the top end of the connecting rod 33 to move along the vertical direction, thereby driving the top pressing assembly 2 to move along the vertical direction.

[0037] In some embodiments, the transmission mechanism 3 comprises a first transmission assembly 34 and a second transmission assembly 35 arranged oppositely, the driving gear 4 is connected between the driven gear 31 of the first transmission assembly 34 and the driven gear 31 of the second transmission assembly 35, when the driving gear 4 pivots, the connecting rod 33 of the first transmission assembly 34 and the connecting rod 33 of the second transmission assembly 35 drive the top pressing assembly 2 to move in the same direction.

[0038] As Figure 1 shown, the transmission mechanism 3 is preferably but not limited to two oppositely arranged in the left-right direction, the first transmission assembly 34 is located on the left side, and the second transmission assembly 35 is located on the right side. The first transmission assembly 34 and the second transmission assembly 35 each include a driven gear 31, a lead screw assembly 32, and a connecting rod 33.

[0039] In the first transmission assembly 34, the left end of the lead screw body is connected to the housing 1, and the right end of the lead screw body is connected to the driven gear 31. In the second transmission assembly 35, the right end of the lead screw body is connected to the housing 1, and the left end of the lead screw body is connected to the driven gear 31. The first transmission assembly 34 and the second transmission assembly 35 are oppositely arranged in the left-right direction.

[0040] The drive gear 4 is connected between the driven gears 31 of the first transmission assembly 34 and the second transmission assembly 35. When the drive gear 4 rotates, the driven gears 31 of the first transmission assembly 34 and the second transmission assembly 35 rotate in opposite directions, the threads of the lead screw bodies of the first transmission assembly 34 and the second transmission assembly 35 have the same screw direction, and the nuts of the first transmission assembly 34 and the second transmission assembly 35 move closer to or farther away from each other in the left-right direction, so that the connecting rods 33 of the first transmission assembly 34 and the second transmission assembly 35 simultaneously drive the top pressing assembly 2 to move upward or downward.

[0041] Since the first transmission assembly 34 and the second transmission assembly 35 are oppositely arranged in the left-right direction, the connecting rod 33 of the first transmission assembly 34 is connected to the left end of the top pressing assembly 2, and the connecting rod 33 of the second transmission assembly 35 is connected to the right end of the top pressing assembly 2, so that the first transmission assembly 34 and the second transmission assembly 35 can smoothly drive the top pressing assembly 2 to move.

[0042] In some embodiments, the drive gear 4 is orthogonal to the driven gear 31, and the drive gear 4 and the driven gear 31 are spaced apart from both the channel 21 and the second opening 13 in the transverse direction of the second opening 13.

[0043] As Figure 1 shown, the drive gear 4 and the driven gear 31 are each arranged in the vertical direction, the axial direction of the drive gear 4 is the front-rear direction, and the axial direction of the driven gear 31 is the left-right direction. The drive gear 4 can be arranged as a straight gear or a helical gear, the driven gear 31 can be arranged as a face gear, or both the drive gear 4 and the driven gear 31 can be arranged as bevel gears.

[0044] In the horizontal direction, both the passage 21 and the second opening 13 are spaced apart from the drive gear 4 in the front-to-back direction, and both the passage 21 and the second opening 13 are spaced apart from the driven gear 31 in the left-to-right direction. In other words, in the horizontal projection plane, the projections of the passage 21 and the second opening 13 are spaced apart from the projection of the drive gear 4 in the front-to-back direction, and the projections of the passage 21 and the second opening 13 are spaced apart from the projection of the driven gear 31 in the left-to-right direction.

[0045] Preferably, the projection of the driving gear 4 is located behind the projections of the passage 21 and the second opening 13 , and the projection of the passage 21 and the second opening 13 is located between the projections of the two driven gears 31 .

[0046] This keeps the anchor cable, which passes through the passage 21, the inner cavity 11, and the second opening 13, separate from the drive gear 4 and the driven gear 31, preventing the drive gear 4 and the driven gear 31 from interfering with the anchor cable, which could damage the drive gear 4, the driven gear 31, and the anchor cable, and affect the tensioning action of the anchor cable. This also makes the structure of the jacking device more compact, reducing its size.

[0047] Preferably, the diameters of the channel 21 and the second opening 13 are set to be substantially the same so that the anchor cable can pass through and limit the anchor cable in the horizontal direction. Since the channel 21 is provided in the top pressure component 2, and the top pressure component 2 is provided in the first opening 12, the diameter of the first opening 12 is larger than the diameters of the channel 21 and the second opening 13.

[0048] In some embodiments, the pusher also includes a support member 5, which is arranged in the inner cavity 11 of the shell 1 and is located on the side of the screw assembly 32 away from the connecting rod 33. One end of the support member 5 is connected to the screw assembly 32 and is movable along the axial direction of the screw assembly 32 under the drive of the screw assembly 32. The other end of the support member 5 is connected to the shell 1 and is movable along the axial direction of the screw assembly 32.

[0049] like Figure 1 As shown, the support members 5 are disposed in the inner cavity 11 of the housing 1 , and there are two support members 5 disposed in a one-to-one correspondence with the transmission mechanisms 3 .

[0050] In the same transmission mechanism 3, the connecting rod 33 is located on the upper side of the screw assembly 32, and the support member 5 is located on the lower side of the screw assembly 32. The top end of the support member 5 is connected to the nut of the screw assembly 32, and the bottom end of the support member 5 is connected to the housing 1 and can move left and right relative to the housing 1. When the nut of the screw assembly 32 moves left and right, the support member 5 moves left and right under the drive of the nut and is always connected between the nut and the housing 1.

[0051] The connecting rod 33 transmits the force received by the top pressing assembly 2 to the nut of the lead screw assembly 32, the support 5 supports the nut and moves synchronously when the nut moves to ensure that the nut is always supported, thereby transmitting the force to the housing 1, avoiding the bending deformation of the lead screw body caused by excessive pressure applied by the nut to the lead screw body. At the same time, the support 5 also indirectly supports the lead screw body, avoiding the inclination of the lead screw body. In addition, the support 5 connected with the nut can also avoid the support 5 blocking the movement of the nut compared with the support 5 abutting the lead screw body.

[0052] Preferably, the support 5 is arranged orthogonally to the lead screw assembly 32, in other words, the support 5 is arranged in the vertical direction. To ensure the supporting effect of the lead screw assembly 32.

[0053] The bottom surface of the inner cavity 11 of the housing 1 can be provided with a slide rail extending in the left-right direction, and the bottom of the support 5 is slidably connected with the slide rail in the left-right direction. The bottom surface of the inner cavity 11 of the housing 1 can also be provided with a slide groove extending in the left-right direction, and the bottom of the support 5 is located in the slide groove and can move along the slide groove. Further, the bottom end of the support 5 can be provided with a pulley or be hemispherical to facilitate movement along the slide groove.

[0054] In some embodiments, the top pressing assembly 2 includes a first member 22 and a second member 23, both of which are annular around the channel 21, the first member 22 and the second member 23 are threadedly connected and relatively movable along the axial direction of the channel 21, and the first member 22 or the second member 23 is connected with the transmission mechanism 3.

[0055] As shown in Figure 1 The first member 22 and the second member 23 are both annular around the vertical direction, the first member 22 and the second member 23 are threadedly connected and relatively movable along the vertical direction to adjust the thickness of the top pressing assembly 2 along the vertical direction.

[0056] Specifically, one of the first member 22 and the second member 23 can be threadedly connected to the outer periphery of the other, or both can be arranged along the vertical direction, the top surface of the lower one is provided with an annular protrusion, and the bottom surface of the upper one is provided with an annular groove, and the protrusion is threadedly connected in the groove.

[0057] One of the first member 22 and the second member 23 is connected with the transmission mechanism 3, so that the top pressing assembly 2 can be moved along the vertical direction under the driving of the transmission mechanism 3, and the thickness of the top pressing assembly 2 can be adjusted by rotating the other.

[0058] The top pressing device of the embodiment of the present application is preferably but not limited to applied to a tensioning jack, the thickness of the top pressing assembly 2 can be adjusted to adjust the stroke of the anchor cable when the anchor cable is tensioned by the tensioning jack, the problem of insufficient tensioning stroke of the tensioning jack in the related art is avoided, and thus the maximum tension of the anchor cable is ensured to ensure the anchoring effect.

[0059] In some embodiments, the first member 22 has a first end and a second end arranged in axial opposition, the outer diameter of the first end is larger than the outer diameter of the second end, so that the abutting surface 24 is formed between the first end and the second end, the second member 23 is arranged on the outer periphery of the second end and is threadedly connected with the second end, and the second member 23 is connected with the transmission mechanism 3.

[0060] As shown in Figure 1 , the upper end of the first member 22 is the first end, the lower end of the first member 22 is the second end, the outer diameter of the upper end of the first member 22 is larger than the outer diameter of the lower end of the first member 22, so that the annular boss protruding in the radial direction of the first member 22 and extending in the circumferential direction of the first member 22 is formed between the upper end of the first member 22 and the lower end of the first member 22, and the bottom surface of the boss forms the abutting surface 24 between the upper end of the first member 22 and the lower end of the first member 22.

[0061] The outer periphery of the lower end of the first member 22 is provided with external threads, the second member 23 is arranged around the outer periphery of the lower end of the first member 22, the inner periphery of the second member 23 is provided with internal threads, the internal threads of the second member 23 are adapted to and connected with the external threads of the first member 22, so that the second member 23 is threadedly connected with the lower end of the first member 22 and can move relatively in the vertical direction, thereby adjusting the thickness of the top pressing assembly 2.

[0062] The second member 23 is connected with the transmission mechanism 3, so that the transmission mechanism 3 can drive the top pressing assembly 2 to move up and down. By rotating the first member 22, the first member 22 can move up and down relative to the second member 23, thereby adjusting the thickness of the top pressing assembly 2. When the first member 22 moves downward relative to the second member 23, the abutting surface 24 can abut against the top surface of the second member 23 to define the limit position of the first member 22 moving downward relative to the second member 23, on the one hand, the minimum thickness of the top pressing assembly 2 is defined, and on the other hand, the first member 22 is prevented from falling into the inner cavity 11 of the shell 1.

[0063] Further, as shown in Figure 2 , the top surface of the first member 22 is provided with connection holes 27 arranged at intervals in the circumferential direction of the first member 22, preferably, the connection holes 27 are arranged symmetrically along the axis of the first member 22, and the connection holes 27 are used to connect a rotating tool to drive the first member 22 to rotate around the vertical direction, thereby adjusting the thickness of the top pressing assembly 2.

[0064] In some embodiments, the top pressing assembly 2 further comprises a connecting seat 25, the connecting seat 25 is provided with a through hole 26, the through hole 26 is communicated between the channel 21 and the inner cavity 11 of the shell 1, the second member 23 is arranged at one end of the connecting seat 25, and the other end of the connecting seat 25 is connected with the transmission mechanism 3.

[0065] As shown in Figure 1 , the connecting seat 25 is horizontally arranged, which is preferably but not limited to a plate body, the connecting seat 25 is provided with a through hole 26 penetrating the connecting seat 25 in the vertical direction, the through hole 26 is communicated between the channel 21 and the inner cavity 11 of the shell 1, preferably, the diameter of the through hole 26 is substantially consistent with the diameter of the channel 21. The through hole 26 is used for the anchor cable to pass through.

[0066] The second member 23 is arranged at the top end of the connecting seat 25, and the bottom end of the connecting seat 25 is connected with the transmission mechanism 3, so as to connect the second member 23 and the transmission mechanism 3 through the connecting seat 25, thereby reducing the difficulty of connecting the second member 23 and the transmission mechanism 3.

[0067] The first opening 12 is provided with a stepped surface 14, the stepped surface 14 is used for abutting against the connecting seat 25, so as to define the limit position of the connecting seat 25 moving away from the inner cavity 11 of the shell 1.

[0068] As shown in Figure 1 , the diameter of the bottom end of the first opening 12 is greater than the diameter of the remaining part of the first opening 12, so that the inner circumferential surface of the first opening 12 forms a horizontally extending stepped surface 14, and the connecting seat 25 can enter the bottom end of the first opening 12 when moving up and down under the driving of the transmission mechanism 3.

[0069] The stepped surface 14 is used for abutting against the connecting seat 25 to avoid the connecting seat 25 from continuously moving upward, thereby defining the limit position of the connecting seat 25 moving upward. Since the connecting seat 25 is connected with the nut of the lead screw assembly 32 through the connecting rod 33, the limit position of the connecting seat 25 moving upward can indirectly define the limit position of the nut moving along the screw body towards the driven gear 31, thereby avoiding the nut from contacting the driven gear 31 to cause damage to the transmission mechanism 3.

[0070] In some embodiments, the top press further comprises a connecting shaft 6, the connecting shaft 6 is coaxially connected with the driving gear 4, one end of the connecting shaft 6 away from the driving gear 4 penetrates to the outside of the shell 1 and has a connecting portion 61, the connecting portion 61 is used for detachably connecting a driving member, so that the driving member drives the driving gear 4 to pivot.

[0071] As shown in Figure 1 and Figure 3 , the connecting shaft 6 is coaxially connected with the driving gear 4, the connecting shaft 6 extends along the front-rear direction as shown in Figure 1 from the driving gear 4 and penetrates to the outside of the shell 1, preferably, a bearing is arranged between the connecting shaft 6 and the shell wall of the shell 1.

[0072] The connecting shaft 6 is different from the end connected to the driving gear 4 (such as Figure 3 The right end of the connecting shaft 6 shown in FIG. 1 is located outside the housing 1, as shown in FIG. Figure 3 As shown, the right end of the connecting shaft 6 has a connecting portion 61, and the cross section of the connecting portion 61 is preferably but not limited to being set to be a hexagon. The connecting portion 61 is used to connect a driving member such as a motor, a rocker, etc. to drive the driving gear 4 to pivot.

[0073] The tensioning jack according to the embodiment of the present invention includes a hydraulic cylinder and a jack.

[0074] The jacking device of the embodiment of the present invention has a housing 1 provided on the hydraulic cylinder body and used for abutting against the anchor ring of the anchor cable, and a jacking assembly 2 used for abutting against the clip of the anchor cable and driving the clip to move axially along the anchor ring.

[0075] When the tensioning jack of the embodiment of the invention is in use, the anchor ring of the anchor cable anchor is against the top surface of the shell 1, and the clip of the anchor cable anchor is against the top surface of the top pressure component 2. The anchor cable passed through the clip extends downward and passes through the channel 21, the inner cavity 11 and the second opening 13 in sequence. When the driving gear 4 rotates, the top pressure component 2 is driven to move in the vertical direction through the transmission mechanism 3, so that the top pressure component 2 drives the clip to move up and down in the anchor ring, so that the clip clamps and releases the anchor cable, thereby tensioning the anchor cable through the hydraulic cylinder body.

[0076] The tensioning jack according to the embodiment of the present invention can ensure that a qualified pre-tightening force is applied to the anchor cable by adopting the jacking device according to the embodiment of the present invention, and can be applied to anchor cables of different models.

[0077] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0078] Furthermore, the terms "first" and "second" are used solely for distinction and are not to be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0079] In the present application, unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", "fixedly connected", "connection", "fixedly connected", "connected", "fixed", and the like should be construed broadly, for example, can be fixed connection, can be detachable connection, or integral; can be mechanical connection, can be electrical connection or communication with each other; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0080] In the present application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0081] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0082] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and cannot be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A press, characterized in that: include: A shell (1), a pressing assembly (2), a transmission mechanism (3) and a driving gear (4); the shell (1) is provided with a first opening (12) and a second opening (13) which are communicated with and arranged opposite to the inner cavity (11) of the shell (1); the pressing assembly (2) is provided at the first opening (12) and is movable along the axial direction of the first opening (12); the pressing assembly (2) is provided with a channel (21) which passes through the axial direction of the first opening (12); the driving gear (4) and the transmission mechanism (3) are both provided in the inner cavity (11) of the shell (1); the driving gear (4) can pivot in a controlled manner; the transmission mechanism (3) is connected between the driving gear (4) and the pressing assembly (2) to drive the pressing assembly (2) to move under the drive of the driving gear (4).

2. The pusher according to claim 1, characterized in that: The transmission mechanism (3) includes a driven gear (31), a screw assembly (32) and a connecting rod (33). The screw assembly (32) is pivotally connected to the housing (1). The driven gear (31) is provided on the screw assembly (32) and is connected to the driving gear (4) so ​​as to drive the screw assembly (32) to pivot under the drive of the driving gear (4). One end of the connecting rod (33) is pivotally connected to the screw assembly (32) and is movable along the axial direction of the screw assembly (32) under the drive of the screw assembly (32). The other end of the connecting rod (33) is pivotally connected to the top pressure assembly (2), so that the connecting rod (33) drives the top pressure assembly (2) to move when the screw assembly (32) pivots.

3. The press according to claim 2, characterized in that: The transmission mechanism (3) comprises a first transmission assembly (34) and a second transmission assembly (35) which are arranged opposite to each other; the driving gear (4) is connected between the driven gear (31) of the first transmission assembly (34) and the driven gear (31) of the second transmission assembly (35); when the driving gear (4) pivots, the connecting rod (33) of the first transmission assembly (34) and the connecting rod (33) of the second transmission assembly (35) drive the pressing assembly (2) to move in the same direction.

4. The pusher according to claim 2, characterized in that: The driving gear (4) is orthogonal to the driven gear (31), and the driving gear (4) and the driven gear (31) are spaced apart from both the channel (21) and the second opening (13) along the transverse direction of the second opening (13).

5. The presser according to claim 2, characterized in that: The invention also includes a support member (5), which is arranged in the inner cavity (11) of the housing (1) and is located on the side of the screw assembly (32) away from the connecting rod (33). One end of the support member (5) is connected to the screw assembly (32) and is movable along the axial direction of the screw assembly (32) under the drive of the screw assembly (32). The other end of the support member (5) is connected to the housing (1) and is movable along the axial direction of the screw assembly (32).

6. The press according to claim 1, characterized in that The pressing assembly (2) includes a first component (22) and a second component (23), wherein the first component (22) and the second component (23) are both annular and surround the channel (21), the first component (22) and the second component (23) are threadedly connected and can move relative to each other along the axial direction of the channel (21), and the first component (22) or the second component (23) is connected to the transmission mechanism (3).

7. The press according to claim 6, characterized in that The first component (22) has a first end and a second end that are axially opposite to each other, the outer diameter of the first end is larger than the outer diameter of the second end, so that a stop surface (24) is formed between the first end and the second end, the second component (23) is arranged on the outer periphery of the second end and is threadedly connected to the second end, and the second component (23) is connected to the transmission mechanism (3).

8. The press according to claim 7, characterized in that: The pressing assembly (2) further includes a connecting seat (25), the connecting seat (25) being provided with a through hole (26) therethrough, the through hole (26) being in communication with the passage (21) and the inner cavity (11) of the housing (1), the second member (23) being provided at one end of the connecting seat (25), and the other end of the connecting seat (25) being connected to the transmission mechanism (3); The first opening (12) is provided with a stepped surface (14), and the stepped surface (14) is used to stop the connecting seat (25) to limit the extreme position of the connecting seat (25) moving in a direction away from the inner cavity (11) of the housing (1).

9. The presser according to claim 1, wherein: The invention also includes a connecting shaft (6), wherein the connecting shaft (6) is coaxially connected to the driving gear (4), and one end of the connecting shaft (6) facing away from the driving gear (4) is passed through the outside of the housing (1) and has a connecting portion (61), wherein the connecting portion (61) is used for detachably connecting to a driving member so that the driving member drives the driving gear (4) to pivot.

10. A tensioning jack, characterized in that: include: A hydraulic cylinder body and a presser, wherein the presser is the presser according to any one of claims 1 to 9, wherein the housing (1) is provided on the hydraulic cylinder body and is used to abut against the anchor ring of the anchor cable, and the presser assembly (2) is used to abut against the clip of the anchor cable and drive the clip to move axially along the anchor ring.

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