Hydraulic lifting centralizing device

Abstract

The utility model discloses a hydraulic lifting centralizing device which comprises a supporting mechanism, a guide mechanism and a hydraulic oil cylinder which are arranged on a mounting seat, the mounting seat comprises a support frame body consisting of a horizontally arranged bottom plate, a top plate parallel to the bottom plate, and four upright posts uniformly distributed along the circumferential direction and vertically fixed between the top plate and the bottom plate; the hydraulic oil cylinder is arranged in the mode that a movable push rod of the hydraulic oil cylinder vertically faces upwards, and the movable push rod penetrates through the outer side of the installation base. The guide mechanism comprises a guide plate inserted on the top plate of the mounting seat, and a connecting mechanism and a sliding mechanism are arranged on the guide plate; the guide plate slides up and down relative to the mounting seat through the sliding mechanism; the supporting mechanism is rotatably connected to the top end of the movable push rod through the connecting mechanism; according to the device, the hydraulic oil cylinder and the supporting mechanism are connected through the guide mechanism, the guide mechanism bears overturning moment from a workpiece, damage caused by direct stress of the oil cylinder is avoided, meanwhile, the device is installed and fixed at any proper angle according to needs, and the stability of the device during workpiece bearing is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of righting devices, in particular to a hydraulic lifting righting device. Background Art

[0002] The hydraulic lift is one of the most commonly used equipment in the manufacturing industry. It is usually set below the center of the workpiece to lift the workpiece to a specified height. In the construction machinery industry, in order to meet the assembly requirements at the bottom of the workpiece, the hydraulic lift for lifting the workpiece is usually required to be smaller in size. However, the small-sized hydraulic lift must have a smaller contact area with the workpiece, which may easily cause the workpiece to tip over during the lifting process. Therefore, it is also necessary to equip the hydraulic lift with multiple corresponding righting mechanisms. By setting multiple righting mechanisms at the four corners of the workpiece and lifting them synchronously with the hydraulic lift, the purpose of smoothly lifting the workpiece can be achieved.

[0003] In traditional lifting operations, the straightening mechanism is generally composed of four straight-top hydraulic cylinders installed at the bottom of the workpiece; at the same time, since the workpiece assembly also requires that there should be no equipment at the bottom to interfere with its installation operation, the four hydraulic cylinders also need to install a cantilever beam structure support fixture on the top of their movable push rods, so that the support fixture can support the bottom of the workpiece through the support fixture to assist the lifting of the workpiece; however, this hard connection between the support fixture and the movable push rod makes the hydraulic cylinder directly bear the overturning moment from the workpiece, and the hydraulic cylinder seal ring is subjected to one-sided force for a long time and is very easy to be damaged, requiring manual regular inspection and replacement of the hydraulic cylinder seal ring; in addition, the support fixture may also cause the workpiece to tip over due to rotation when carrying the workpiece. Therefore, based on the above technical problems, it is necessary to design a straightening mechanism suitable for cantilever beam structure, which is conducive to reducing the hydraulic cylinder and manual maintenance costs and extending the service life of the equipment. Utility Model Content

[0004] The utility model aims to provide a hydraulic lifting and straightening device which solves the problems of the prior art.

[0005] To this end, the technical solution of the utility model is as follows:

[0006] A hydraulic lifting and straightening device includes a support mechanism, a guiding mechanism, and a hydraulic oil cylinder disposed on a mounting base. Among them, the mounting base includes a support frame body composed of a horizontally arranged bottom plate, a top plate parallel to the bottom plate, and four columns vertically fixed between the top plate and the bottom plate and evenly distributed circumferentially; the hydraulic cylinder is arranged with its movable push rod vertically upward, its cylinder barrel is centrally fixed on the bottom plate, and its movable push rod extends out of the mounting base through a through hole opened on the top plate; the guiding mechanism includes a connecting mechanism and a sliding mechanism disposed on a guiding plate; the guiding plate includes a first vertical plate and a second vertical plate vertically connected, and is vertically inserted into a guiding plate insertion hole opened on the top plate of the mounting base; the sliding mechanism is disposed between the guiding plate and the mounting base, enabling the guiding plate to reciprocally slide vertically relative to the mounting base; the connecting mechanism includes a guiding top plate horizontally fixed at the top end of the guiding plate, a connecting sleeve connected to the end of the push rod is provided at the center of the bottom surface thereof, and a connecting shaft is vertically fixed at the center of the top surface thereof; the support mechanism includes a sleeve rotatably sleeved outside the connecting shaft through a rotating support member, a support beam is horizontally connected to the side wall thereof, and a connecting flange connected to the guiding top plate is provided on the outer wall of the bottom end.

[0007] Further, a first reinforcing beam group and an auxiliary support frame are respectively disposed on both sides of the mounting base. Among them, the reinforcing beam group is composed of two reinforcing beams respectively obliquely fixed between two adjacent columns and the bottom plate; the auxiliary support frame is composed of a vertical frame and a horizontal frame vertically fixed, and the vertical frame is fixed on the outer side wall surfaces of the other two columns.

[0008] Further, a horizontally arranged connecting beam is fixedly connected at the middle position between every two adjacent columns.

[0009] Further, the sliding mechanism includes V-shaped guide rails respectively fixed on the first vertical plate and the second vertical plate, and V-shaped guide wheels respectively capable of meshing and cooperating with the V-shaped guide rails; at least one fixed shaft is horizontally fixed between two columns opposite to each V-shaped guide rail, and the V-shaped guide wheels are rotatably arranged on the fixed shafts through rolling bearings and mesh with the corresponding V-shaped guide rails.

[0010] Further, the sliding mechanism includes two linear guide rails, the tracks of the two linear guide rails are respectively fixed on the first vertical plate and the second vertical plate, and the sliders of each linear guide rail are fixed on two columns on the opposite side of the track through connecting plates.

[0011] Further, the connecting sleeve is composed of a descending support plate and a transition plate. Among them, the transition plate is horizontally fixed at the center of the bottom surface of the guiding top plate; the descending support plate is horizontally arranged and sleeved outside the movable push rod, and a step cooperating with the annular boss at the top end of the movable push rod is provided on the inner wall thereof, and an annular boss is provided on the outer wall of the top end, enabling the top end of the descending support plate to be fixed at the center of the bottom surface of the guiding top plate through screws arranged circumferentially on the annular boss, and enabling the transition plate to be embedded in the descending support plate.

[0012] Further, the rotating support member is two rotating bearings respectively sleeved and fixed on the outer walls of the top end and the bottom end of the connecting shaft.

[0013] Further, the rotating bearing is a single-row tapered roller bearing.

[0014] Compared with the prior art, the hydraulic lifting table straightening device makes the hydraulic cylinder indirectly connected with the support mechanism by using the guiding mechanism. The guiding mechanism replaces the hydraulic cylinder to bear the overturning moment from the workpiece, avoiding the damage caused by the direct force on the cylinder, prolonging the service life of the equipment, reducing the number of regular inspections by workers and the maintenance cost. At the same time, the support mechanism of the device can be installed and fixed at any appropriate angle according to needs in cooperation with the connecting mechanism, ensuring its stability when bearing the workpiece and avoiding the problem of the workpiece tipping over caused by the rotation of the support mechanism when supporting the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural view of the hydraulic lifting and straightening device of the present utility model;

[0016] Figure 2 is a schematic structural view of the separated guiding mechanism in the hydraulic lifting and straightening device of the present utility model;

[0017] Figure 3 is a schematic structural view of the separated structure of the hydraulic lifting and straightening device of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following further describes the present utility model in conjunction with the drawings and specific embodiments, but the following embodiments are by no means any limitation to the present utility model.

[0019] See Figure 1 and Figure 2 , the hydraulic lifting and straightening device includes a support mechanism 1, a guiding mechanism 2 and a hydraulic oil cylinder 4 arranged on the mounting base 3; wherein, the hydraulic cylinder 4 is fixed on the mounting base 3, the support mechanism 1 is installed on the movable push rod of the hydraulic cylinder 4, and the guiding mechanism is connected between the support mechanism 1 and the mounting base 3.

[0020] The mounting base 3 includes a support frame body, which is composed of a horizontally arranged bottom plate, a top plate parallel to the bottom plate, and four columns vertically and uniformly arranged circumferentially between the top plate and the bottom plate; a circular through hole for passing through the movable push rod of the hydraulic cylinder 4 is opened at the center of the top plate of the mounting base 3, and a jack for inserting the guiding plate of the guiding mechanism 2 is also opened adjacent to the circular through hole.

[0021] As a preferred technical solution of this embodiment, a reinforcing beam group and an auxiliary support frame are respectively arranged on both sides of the mounting seat 3; wherein the reinforcing beam group is composed of two reinforcing beams, which are obliquely arranged on the adjacent sides of the two columns, and the two ends of each reinforcing beam are respectively fixed on the column and the base plate to enhance the structural strength of the mounting seat 3; the auxiliary support frame is composed of a vertically arranged rectangular frame and a horizontally arranged "日"-shaped frame, the rectangular frame is fixed on the outer wall surfaces of the other two columns, and one end of the "日"-shaped frame is vertically fixed to the bottom end of the rectangular frame; in actual application, the mounting seat 3 is placed in a stepped mounting pit below the four corners of the workpiece, specifically, the deep pit of the stepped mounting pit is located at the edge of the jacking workpiece, and the shallow pit is close to the center of the workpiece; when setting the mounting seat 3, the bottom end of the mounting seat 3 is arranged in the deep pit, and is fixed to the bottom of the deep pit by bolts penetrated through the base plate, and the auxiliary support frame is pressed into the bottom of the shallow pit to play a certain supporting role, thereby ensuring that the device is kept stable in the process of assisting in jacking the workpiece.

[0022] As a preferred technical solution of this embodiment, a horizontal connecting beam is connected and fixed at the middle position of every two adjacent columns.

[0023] The hydraulic cylinder 4 is arranged with its movable push rod pointing vertically upward, and its cylinder barrel is centrally fixed on the bottom plate of the mounting seat 3, and its movable push rod extends to the outside of the mounting seat 3 through a circular through hole opened on the top plate of the mounting seat 3.

[0024] The guide mechanism 2 includes a connecting mechanism and a sliding mechanism arranged on the guide plate 8; wherein,

[0025] The guide plate 8 is an L-shaped plate body composed of a first vertical plate and a second vertical plate connected and fixed vertically, and is vertically arranged and inserted into an L-shaped insertion hole opened on the top plate of the mounting seat 3;

[0026] The connecting mechanism includes a descending support plate 7, a transition plate 6, a guiding top plate 5, and a connecting shaft 15 arranged successively from bottom to top; the guiding top plate 5 is horizontally fixed on the top end face of the guiding plate 8, and a plurality of support mechanism fixing holes 16 are provided on it along the circumferential direction; the transition plate 6 is a circular plate body, which is horizontally arranged and fixed at the center of the bottom surface of the guiding top plate 5 by a plurality of screws arranged along the circumferential direction; the descending support plate 7 is a circular ring body, with an annular boss on its upper outer wall and an annular step on its inner wall; the descending support plate 7 is split into two parts, and is sleeved outside the movable push rod of the hydraulic cylinder 4 in a combined and fixed manner, and the annular boss at the end of the movable push rod is press-fitted on the upper end face of the annular step on the inner wall of the descending support plate 7, so as to realize that the movable push rod of the hydraulic cylinder 4 drives the descending support plate 7 to move downward synchronously; the top end of the descending support plate 7 is fixed at the center of the bottom surface of the guiding top plate 5 by a plurality of screws arranged along the circumferential direction on its annular boss; preferably, the outer diameter of the transition plate 6 is the same as the inner diameter of the upper part of the descending support plate 7, and the axial length of the upper part of the descending support plate 7 satisfies that the transition plate 6 is embedded in the descending support plate 7 and has a spacing from the top surface of the movable push rod to protect the end of the movable push rod; the connecting shaft 15 is vertically fixed at the center of the top surface of the guiding top plate 5, and a first single-row tapered roller bearing 13 and a second single-row tapered roller bearing 14 are respectively sleeved and fixed on the outer walls of its top end and bottom end;

[0027] The sliding mechanism includes two V-shaped guide rails 9, one of the V-shaped guide rails 9 is vertically fixed on the side edge of the end side of the first vertical plate, and the other V-shaped guide rail 9 is vertically fixed on the outer side plate surface of the second vertical plate; between the two columns opposite to each V-shaped guide rail 9, two fixing shafts 12 arranged at upper and lower intervals are horizontally fixed, and both ends of each fixing shaft 12 are fixed on the two columns; a V-shaped guide wheel 10 is arranged on each fixing shaft 12, and the V-shaped guide wheel 10 is rotatably arranged on the fixing shaft 12 through a double-row tapered roller bearing 11 and meshes with the V-shaped guide rail 9 on the opposite side, so that the guiding plate 8 can reciprocate up and down relative to the mounting seat 3 through the sliding mechanism.

[0028] The support mechanism 1 includes a sleeve and a support beam. Among them, the sleeve is a cylindrical barrel with a top cover and an opening at the bottom, and its inner diameter is adapted to the outer diameter of the connecting shaft 15. The sleeve is rotatably sleeved outside the connecting shaft 15 through two single-row tapered roller bearings to meet the support angle requirements of workpieces of different models. Specifically, during actual assembly, the sleeve without the top cover is sleeved outside the connecting shaft 15 through two bearings. A limit piece is fixed to the top end of the connecting shaft 15 by screws. The outer diameter of the limit piece is smaller than the inner diameter of the sleeve but larger than the outer diameter of the connecting shaft 15, so that the sleeve is limited on the connecting shaft 15. Then, the top cover of the sleeve is covered and fixed to complete the movable assembly between the sleeve and the connecting shaft 15. In addition, a connecting flange is provided on the outer wall of the bottom end of the sleeve, so that the sleeve is fixed to the guide top plate 5 by bolts passing through the connecting flange and the fixing holes 16 of the guide top plate, fixing the installation angle of the support mechanism 1 relative to the guide mechanism 2, and ensuring that the support mechanism 1 will not cause the workpiece to tip over due to rotation when supporting the workpiece. The support beam is horizontally arranged, and one end of it is fixed to the side wall of the sleeve. In actual application, the support beam supports on the bottom surface of the workpiece.

[0029] See Figure 1 , the specific working principle of this hydraulic lifting and righting device is as follows:

[0030] When the workpiece needs to be lifted, the lifting platform is arranged below the center position of the workpiece to lift the workpiece. Four hydraulic lifting and righting devices are respectively arranged at the four top corner positions of the workpiece to assist the lifting platform to drive the workpiece to lift in a horizontal state. For each hydraulic lifting and righting device, in the initial state, the support mechanism can rotate freely relative to the guide mechanism. By adjusting the angle of the support mechanism relative to the mounting seat, its support beam is completely abutted against the bottom surface of the workpiece, and then its sleeve is fixed to the guide mechanism, so that the support beam is maintained at the appropriate support angle position. During the lifting process, during the jacking process, the movable push rod of the hydraulic cylinder 4 extends synchronously with the lifting platform. At this time, the movable push rod drives the connecting mechanism to rise. The sliding mechanism cooperates with the mounting seat 3. Under the cooperation of the freely rolling guide wheels and the guide rails, the support mechanism rises stably synchronously with the righted workpiece until the specified jacking height is reached. During the lowering process, the movable push rod of the hydraulic cylinder 4 retracts synchronously with the lifting platform. At this time, the end of the movable push rod cooperates with the lowering support plate of the connecting mechanism to drive the connecting mechanism to descend synchronously. Similarly, under the cooperation of the guide wheels and the guide rails, the sliding mechanism drives the connecting mechanism to descend smoothly relative to the mounting seat 3, and the support mechanism descends stably synchronously to the initial position.

Claims

1. A hydraulic lifting and straightening device, characterized in that: The invention comprises a support mechanism (1), a guide mechanism (2) and a hydraulic oil cylinder (4) arranged on a mounting seat (3); wherein the mounting seat (3) comprises a support frame body composed of a horizontally arranged bottom plate, a top plate arranged parallel to the bottom plate, and four upright columns evenly distributed along the circumference and vertically fixed between the top plate and the bottom plate; the hydraulic oil cylinder (4) is arranged in a manner that its movable push rod is vertically upward, its cylinder barrel is centrally fixed on the bottom plate, and its movable push rod extends to the outside of the mounting seat (3) through a through hole provided on the top plate; the guide mechanism (2) comprises a connecting mechanism and a sliding mechanism arranged on a guide plate (8); the guide plate (8) comprises a first vertical plate and a second vertical plate connected vertically, The guide plate (8) is vertically inserted into a guide plate insertion hole provided on a top plate of a mounting seat (3); a sliding mechanism is provided between the guide plate (8) and the mounting seat (3), so that the guide plate (8) can slide back and forth in a vertical direction relative to the mounting seat (3) through the sliding mechanism; the connecting mechanism comprises a guide top plate (5) horizontally fixed on the top of the guide plate (8), a connecting sleeve connected to the end of a movable push rod is provided at the center of the bottom surface of the guide plate, and a connecting shaft (15) is vertically fixed at the center of the top surface of the guide plate; the supporting mechanism (1) comprises a sleeve rotatably sleeved on the outside of the connecting shaft (15) through a rotating support member, a supporting beam is horizontally connected to the side wall of the guide plate, and a connecting flange connected to the guide top plate is provided on the outer wall of the bottom end.

2. The hydraulic lifting and straightening device according to claim 1, characterized in that: A first reinforcing beam group and an auxiliary support frame are respectively arranged on both sides of the mounting seat (3); wherein the reinforcing beam group is composed of two reinforcing beams respectively fixed obliquely between two adjacent columns and the bottom plate; the auxiliary support frame is composed of a vertically fixed vertical frame and a horizontal frame, and the vertical frame is fixed on the outer wall surface of the other two columns.

3. The hydraulic lifting and righting device according to claim 1, characterized in that: A horizontally arranged connecting beam is connected and fixed at the middle position of every two adjacent columns.

4. The hydraulic lifting and straightening device according to claim 1, characterized in that: The sliding mechanism comprises V-shaped guide rails (9) respectively fixed on the first vertical plate and the second vertical plate, and V-shaped guide wheels (10) respectively capable of meshing with each V-shaped guide rail (9); at least one fixed shaft (12) is horizontally fixed between two uprights opposite to each V-shaped guide rail (9); the V-shaped guide wheel (10) is freely rotatably arranged on the fixed shaft (12) via a rolling bearing and meshes with the corresponding V-shaped guide rail (9).

5. The hydraulic lifting and righting device according to claim 1, characterized in that: The sliding mechanism comprises two linear guide rails, the rails of the two linear guide rails are respectively fixed on the first vertical plate and the second vertical plate, and the slider of each linear guide rail is fixed on two columns located on the opposite sides of the rails through a connecting plate.

6. The hydraulic lifting and righting device according to claim 1, characterized in that: The connecting sleeve is composed of a descending support plate (7) and a transition plate (6); wherein the transition plate (6) is horizontally fixed at the center of the bottom surface of the guide top plate (5); the descending support plate (7) is horizontally arranged and sleeved on the outside of the movable push rod, and a step matching the annular boss at the top end of the movable push rod is arranged on its inner wall, and an annular boss is arranged on the outer wall of the top end, so that the top end of the descending support plate (7) is fixed to the center of the bottom surface of the guide top plate (5) by screws arranged on the annular boss along the circumferential direction, and the transition plate (6) is embedded in the descending support plate (7).

7. The hydraulic lifting and righting device according to claim 1, characterized in that: The rotating support members are two rotating bearings which are respectively sleeved and fixed on the outer wall of the top end and the outer wall of the bottom end of the connecting shaft (15).

8. The hydraulic lifting and righting device according to claim 7, characterized in that: The rotating bearing is a single row tapered roller bearing.

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