Free telescopic hydraulic adjusting and repairing device

Abstract

The utility model discloses a free telescopic hydraulic adjusting and repairing device which comprises a fixed base and a telescopic frame, the telescopic frame is arranged in the fixed base, the telescopic frame comprises a telescopic cylinder, a rotating base and a hydraulic cylinder, a vertically-through threaded hole is formed in the telescopic cylinder in the axis direction of the telescopic cylinder, a connecting column with external threads is arranged on the rotating base, and the hydraulic cylinder is arranged in the connecting column. The fixing base comprises an upper supporting plate and a lower supporting plate, the upper supporting plate and the lower supporting plate are connected through a stand column, a center hole is formed in the upper supporting plate, and the center hole is formed in the lower supporting plate. Damping universal wheels are arranged below the lower supporting plate, a telescopic cylinder is arranged in a center hole, and a rotating base is arranged on the upper end face of the lower supporting plate. The device can freely move in a large space and a small space and is not limited by the space; the whole structure is simple, and movement, adjustment and manufacturing are convenient.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical engineering, and particularly relates to a freely telescopic hydraulic repair device. Background Art

[0002] The welding of aluminum alloys for rail transit is a metallurgical process of metal melting and recrystallization. During the welding process, it is easy to mistakenly think that the welding deformation is caused by the thermal expansion of the metal. However, the uniform expansion and cooling of the metal cannot form welding deformation. Instead, the real causes of welding deformation are the hindrance of thermal expansion, the hindrance of cooling contraction, and the uneven heating of the workpiece; during the welding of aluminum alloy car bodies and components, deformation is likely to occur. To ensure the geometric dimensions after welding, after the welding of the car body and components is completed, it is necessary to repair the car body and large components according to the actual situation. During the repair, it is necessary to position and support the repaired part to ensure that the workpiece does not move up and down; for the repair of workpieces in small spaces, large hydraulic presses cannot be used. Therefore, a repair device that is not limited by space, has adjustable height, and is convenient to move is needed to assist in repairing the workpiece to ensure that the aluminum alloy car body and major components meet the process dimension requirements. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is the inconvenient repair of workpieces in small spaces in the prior art.

[0004] To solve the above technical problem, a technical solution provided by the utility model is:

[0005] A freely telescopic hydraulic repair device includes a fixed base and a telescopic frame. The telescopic frame is arranged inside the fixed base. The telescopic frame includes a telescopic cylinder, a rotating base, and a hydraulic cylinder. A threaded hole that penetrates up and down along the axis is arranged inside the telescopic cylinder. A connecting column with an external thread is arranged on the rotating base. The connecting column is screwed into the threaded hole from the lower end of the threaded hole, that is, the connecting column and the telescopic cylinder are in threaded connection. By screwing the connecting column into and out of the threaded hole, the up and down movement of the telescopic cylinder is realized, and thus the up and down movement of the telescopic frame is realized.

[0006] The fixed end of the hydraulic cylinder is arranged at the upper part of the threaded hole. Through the telescopic movement of the hydraulic cylinder, the up and down movement of this tooling is further realized to adapt to the repair of higher workpieces. A support block is arranged at the telescopic end of the hydraulic cylinder. During use, the support block contacts the part to be repaired, which is convenient for positioning, supporting, and repairing the part to be repaired.

[0007] Further, the fixed base includes an upper support plate and a lower support plate, which are connected by columns. A central hole is provided on the upper support plate, and the inner diameter of the central hole is larger than the outer diameter of the telescopic cylinder. The telescopic cylinder can move up and down within the central hole. Shock-absorbing universal wheels are provided below the lower support plate to enable the movement of the device. The telescopic cylinder is arranged within the central hole, and the rotating base is arranged on the upper end surface of the lower support plate.

[0008] Further, the upper end surface of the telescopic cylinder extends beyond the upper end surface of the upper support plate, and a guide frame for preventing the telescopic cylinder from tilting during up and down movement is arranged on the upper end surface of the upper support plate around the circumference of the telescopic cylinder.

[0009] Further, positioning pin fixing holes are provided on the telescopic cylinder, and positioning pin insertion holes are provided on the columns. When the positioning pin fixing holes and the positioning pin insertion holes correspond to each other, a positioning pin is used to connect the positioning pin fixing holes and the positioning pin insertion holes together, thereby fixing the telescopic cylinder.

[0010] Further, positioning pin insertion holes are provided on at least two columns, and at least three positioning pin insertion holes are arranged vertically and distributed on the same column.

[0011] Further, the guide frame includes two semi-circular hoops, which are connected together by fixing bolts.

[0012] Further, the two semi-circular hoops are fixed on the upper end surface of the telescopic cylinder.

[0013] Further, the shock-absorbing universal wheels are connected to the lower support plate through connecting pieces, and brakes are provided on the shock-absorbing universal wheels to facilitate fixing the device on the ground or platform.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. In this device, both the telescopic cylinder and the hydraulic cylinder can move up and down in height, which can achieve the function of height adjustment; shock-absorbing universal wheels are provided on the lower support plate to achieve the function of convenient movement; the overall structure is simple. Compared with large hydraulic presses, this device is small in volume and can move freely in large and small spaces, achieving the function of being unrestricted by space; the overall structure is simple and is convenient for adjustment and fabrication.

[0016] 2. In this device, the rotating bracket and the lower support plate are separately designed. While being able to rotate, it is also convenient to replace when the threads on the support column or the telescopic cylinder are worn.

[0017] In order to make the above and other objects, features, and advantages of the present utility model more apparent and understandable, the following specifically gives preferred embodiments and, in conjunction with the accompanying drawings, provides a detailed description as follows. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments. Obviously, the accompanying drawings in the following description are only two of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of the device;

[0020] Figure 2 is Figure 1 a schematic structural diagram of the telescopic frame in

[0021] In the figure, 1 - upper support plate, 2 - lower support plate, 3 - column, 4 - telescopic cylinder, 5 - connecting piece, 6 - shock-absorbing universal wheel, 7 - positioning pin insertion hole, 8 - rotating base, 9 - hydraulic cylinder, 10 - connecting column, 11 - guiding frame, 12 - positioning pin fixing hole, 13 - positioning pin, 14 - support block, 15 - fixing bolt, A - guiding frame fixed clamping position. Detailed Embodiments

[0022] The following will describe the embodiments of the present utility model in more detail with reference to the accompanying drawings. Although some embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present utility model. It should be understood that the drawings and embodiments of the present utility model are only for illustrative purposes and are not used to limit the protection scope of the present utility model.

[0023] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] The names of the messages or information exchanged between multiple devices in the embodiments of the present utility model are only for illustrative purposes and are not used to limit the scope of these messages or information.

[0025] Embodiment: AsFigure 1-2 As shown: A freely telescopic hydraulic adjustment device, including a fixed base and a telescopic frame.

[0026] The fixed base includes an upper support plate 1 and a lower support plate 2. The upper support plate 1 and the lower support plate 2 are connected by four columns 3. A central hole is provided at the central position of the upper support plate 1. The inner diameter of the central hole is larger than the outer diameter of the telescopic cylinder 4. The telescopic cylinder 4 can move up and down in the central hole. The lower end surface of the lower support plate 2 is connected with a shock-absorbing universal wheel 6 through a connecting piece 5. A brake is provided on the shock-absorbing universal wheel 6. The movement of this device is realized through the shock-absorbing universal wheel 6. While guiding, it avoids the problem of damage to the universal wheel during the adjustment process.

[0027] Three positioning pin insertion holes 7 are provided on each of the two columns 3 that are symmetric about the axis of the central hole. The positioning pin insertion holes 7 on the two columns 3 are symmetrically arranged.

[0028] The telescopic frame includes a telescopic cylinder 4, a rotating base 8, and a hydraulic cylinder 9. A thread hole that penetrates up and down is provided inside the telescopic cylinder 4 along its axis. A connecting column 10 with an external thread is provided on the rotating base 8. The connecting column 10 is screwed into the thread hole from the lower end of the thread hole, that is, the connecting column 10 and the telescopic cylinder 4 are in a threaded connection. By screwing the connecting column 10 into and out of the thread hole, the up and down movement of the telescopic cylinder 4 is realized, and thus the rise and fall of the telescopic frame are realized.

[0029] The telescopic cylinder 4 is arranged in the central hole. The upper end surface of the telescopic cylinder 4 extends out of the upper end surface of the upper support plate 1. And a guiding frame 11 for preventing the telescopic cylinder 4 from tilting during the up and down movement is fixed on the upper end surface of the upper support plate 1 around the circumference of the telescopic cylinder 4.

[0030] The guiding frame 11 includes two semi-circular hoops, and the two semi-circular hoops are connected together by fixing bolts 15.

[0031] The rotating base 8 is arranged on the upper end surface of the lower support plate 2. By rotating the rotating base 8, the rise and fall of the telescopic cylinder 4 are realized.

[0032] A positioning pin fixing hole 12 is provided on the telescopic cylinder 4. When the positioning pin fixing hole 12 and the positioning pin insertion hole 7 correspond to each other when the telescopic cylinder 4 rises or falls to a predetermined position, the positioning pin 13 is used to connect the positioning pin fixing hole 12 and the positioning pin insertion hole 7 together, thereby fixing the telescopic cylinder 4.

[0033] The fixed end of the hydraulic cylinder 9 is welded to the upper part of the thread hole. Through the expansion and contraction of the hydraulic cylinder 9, the rise and fall of this tooling are further realized to adapt to the adjustment of higher workpieces. A support block 14 is provided at the expansion and contraction end of the hydraulic cylinder 9. When in use, the support block 14 contacts the component to be adjusted, which is convenient for positioning, supporting, and adjusting the component to be adjusted.

[0034] The process of using the overall technical solution formed by integrating the above embodiments is as follows: Move the device to the lower part of the workpiece to be repaired and fix it through the shock-absorbing universal wheels 6. Then rotate the rotary base 8 to move the telescopic cylinder 4 upward through the thread. When the positioning pin fixing hole 12 and the positioning pin insertion hole 7 on the telescopic cylinder 4 correspond to each other, connect the positioning pin fixing hole 12 and the positioning pin insertion hole 7 together by using the positioning pin 13, so as to fix the telescopic cylinder 4, and fix the rotary base 8 on the lower support plate 2 by using the fixing pin. After the height of the telescopic cylinder 4 is adjusted in place, use the hydraulic cylinder 9 to lift the support block 14 upward until it contacts the repair part, playing a role in positioning or supporting or repairing the part to be repaired. After the repair is completed, release the pressure of the hydraulic cylinder 9 to make the hydraulic cylinder 9 return.

[0035] Note that the above is only the preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments here. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments only. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A freely retractable hydraulic adjustment and repair device, comprising a fixed base and a retractable frame, characterized in that: The telescopic frame is arranged in the fixed base, and the telescopic frame includes a telescopic tube, a rotating base and a hydraulic cylinder. The inside of the telescopic tube is provided with a threaded hole that passes through up and down along its axial direction. A connecting column with an external thread is arranged on the rotating base. The connecting column is screwed into the threaded hole from the lower end of the threaded hole using a thread. The fixed end of the hydraulic cylinder is arranged at the upper part of the threaded hole, and the telescopic end of the hydraulic cylinder is provided with a support block.

2. A freely retractable hydraulic adjustment and repair device according to claim 1, characterized in that: The fixed base includes an upper support plate and a lower support plate, the upper support plate and the lower support plate are connected by a column, a center hole is arranged on the upper support plate, a shock-absorbing universal wheel is arranged below the lower support plate, the telescopic cylinder is arranged in the center hole, and the rotating base is arranged on the upper end surface of the lower support plate.

3. A freely retractable hydraulic adjustment and repair device according to claim 2, characterized in that: The upper end surface of the telescopic cylinder extends out of the upper end surface of the upper support plate, and a guide frame is provided on the upper end surface of the upper support plate and located on the circumference of the telescopic cylinder to prevent the telescopic cylinder from tilting during the up and down movement.

4. The freely retractable hydraulic adjustment and repair device according to claim 3 is characterized in that: The telescopic cylinder is provided with a locating pin fixing hole, and the column is provided with a locating pin insertion hole. When the locating pin fixing hole and the locating pin insertion hole correspond to each other, the locating pin fixing hole and the locating pin insertion hole are connected together by a locating pin, thereby fixing the telescopic cylinder.

5. The freely retractable hydraulic adjustment and repair device according to claim 4 is characterized in that: The guide frame comprises two semicircular hoops, which are connected together by fixing bolts.

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