An angle-adjustable hydraulic jack top-to-top test device

Abstract

The present invention provides an angle-adjustable hydraulic jack top test device, comprising a bottom plate and a base composed of at least two base main ribs, one end of each of the two base main ribs being fixedly provided with a U-shaped orifice plate perpendicular to the bottom plate, and the other end being fixedly provided with a jack fixing seat, a slider that can slide back and forth between the two base main ribs being provided in the middle of each of the two base main ribs, a slider that can move up and down on the side wall of the U-shaped orifice plate between the two base main ribs being provided, the bottom end of the cylinder of the test jack being hinged to the slider, the piston rod end being connected to one side of the slider, the piston rod end of the loading jack being connected to the other side of the slider, and the bottom end of the cylinder being connected to the jack fixing seat. The present invention provides an angle-adjustable hydraulic jack top test device, so as to accurately detect the performance indicators of the hydraulic jack when there may be a certain angle change between the load and the hydraulic jack in actual working conditions.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic jack performance detection, in particular to an angle-adjustable hydraulic jack top-to-top test device. Background Art

[0002] At present, the device for testing the performance index of hydraulic jack is to arrange the test hydraulic jack and the loading hydraulic jack 180 degrees opposite each other, and the loading jack provides the test jack with working resistance under the target working condition. The performance of the test jack is evaluated by counting the number of reciprocating motions of the test jack to see whether it meets the requirements.

[0003] However, since the load and hydraulic jack of the hydraulic jack in actual work often change within a certain angle, when testing the performance of the hydraulic jack, arranging the test hydraulic jack and the loading hydraulic jack at 180° often cannot simulate the actual working conditions of the test hydraulic jack, so it is difficult to accurately detect the performance indicators of the hydraulic jack. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an angle-adjustable hydraulic jack top-to-top test device so as to accurately detect the performance index of the hydraulic jack when there may be a certain angle change between the load and the hydraulic jack in actual working conditions.

[0005] In order to solve the above technical problems, the present invention provides an angle-adjustable hydraulic jack top test device, comprising a base, the base comprising a bottom plate, at least two base main ribs vertically fixed on the bottom plate, one end between every two base main ribs is fixedly provided with a U-shaped orifice plate perpendicular to the bottom plate, the other end between every two base main ribs is fixedly provided with a jack fixing seat, a sliding block that can slide back and forth between the two base main ribs is provided in the middle of every two base main ribs, a sliding block that can move up and down on the side wall of the U-shaped orifice plate is provided on the side wall of the U-shaped orifice plate between the two base main ribs, the bottom end of the cylinder of the test jack is hinged to the sliding block, the piston rod end is connected to one side of the sliding block, the piston rod end of the loading jack is connected to the other side of the sliding block, and the bottom end of the cylinder is connected to the jack fixing seat.

[0006] Furthermore, the slide seat includes a slide seat baffle and slide seat side plates vertically fixed on both sides of the slide seat baffle, and first U-shaped fixing ear seats are respectively fixedly arranged on the inner side walls of the slide seat side plates. The slide seat baffle and the stop plate are fixedly connected to the inner and outer sides of the U-shaped orifice plate by bolts passing through the U-shaped hole of the U-shaped orifice plate. The bottom end of the cylinder of the test jack is hinged to the first U-shaped fixing ear seat, and the angle between the test jack and the loading jack can be adjusted by adjusting the fixing height of the slide seat baffle and the stop plate on the U-shaped orifice plate.

[0007] Furthermore, a first pin is provided at the bottom end of the cylinder of the test jack, and both ends of the first pin are supported on the first U-shaped fixing ear seat, and a first pressure block is provided at the connection between the first U-shaped fixing ear seat and the first pin, and the second pin passes through the through holes on the first U-shaped fixing ear seat and the first pressure block to fix the first pressure block on the first U-shaped fixing ear seat, thereby limiting the two ends of the first pin on the first U-shaped fixing ear seat through the first pressure block.

[0008] Furthermore, the slider includes a slider body, a connecting block for connecting to the piston rod end of the test jack is arranged on the upper part of one end of the slider body, a connecting ear plate for connecting to the piston rod end of the loading jack is arranged on the other end of the slider body, and limit blocks are respectively arranged on both sides of the slider body.

[0009] Furthermore, the distance between the two ends of the limit blocks on both sides of the slider body matches the spacing between two adjacent main ribs of the base, so as to ensure that the slider can slide back and forth between the two adjacent main ribs of the base.

[0010] Furthermore, a guide plate is fixedly provided at the top of the middle portion of the main rib plate of the base to prevent the sliding block from falling off between two adjacent main rib plates of the base.

[0011] Furthermore, the jack fixing seat includes a fixing plate fixedly arranged on the inner side wall of the end of the main rib plate of the base, a second U-shaped fixing ear seat fixedly arranged on the side wall of the fixing plate, and a fixing connecting plate fixedly connected to two adjacent fixing plates, and the bottom end of the cylinder of the loading jack is hinged to the second U-shaped fixing ear seat.

[0012] Furthermore, a third pin is provided at the bottom end of the cylinder of the loading jack, and both ends of the third pin are supported on the second U-shaped fixing ear seat, and a second pressure block is provided at the connection between the second U-shaped fixing ear seat and the third pin, and the fourth pin passes through the through holes on the second U-shaped fixing ear seat and the second pressure block to fix the second pressure block on the second U-shaped fixing ear seat, thereby limiting the two ends of the third pin on the second U-shaped fixing ear seat through the second pressure block.

[0013] Furthermore, the base is fixedly connected to the base through the bottom plate.

[0014] Furthermore, a hanging block is welded on the base, and an electro-hydraulic control bracket for supporting the electro-hydraulic control element is arranged on the hanging block.

[0015] The present invention provides an angle-adjustable hydraulic jack top-to-top test device, which designs an angle adjustment mechanism between the test jack and the loading jack. The height of the test jack can be adjusted by adjusting the height of the slide seat connected to the bottom end of the test jack cylinder, thereby adjusting the angle between the test jack and the loading jack. This can more realistically simulate the actual working conditions of the push jack, thereby more accurately detecting the performance indicators of the hydraulic jack when there is a certain angle change between the load and the hydraulic jack in actual working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of an angle-adjustable hydraulic jack top-to-top test device provided in an embodiment of the present invention;

[0017] Figure 2 A schematic diagram of the base structure of an angle-adjustable hydraulic jack top-to-top test device provided in an embodiment of the present invention;

[0018] Figure 3 A schematic diagram of the base structure of an angle-adjustable hydraulic jack top-to-top test device provided in an embodiment of the present invention;

[0019] Figure 4 A schematic diagram of a slide structure of an angle-adjustable hydraulic jack top-to-top test device provided in an embodiment of the present invention;

[0020] Figure 5 A cross-sectional view of an angle-adjustable hydraulic jack top-to-top test device provided by an embodiment of the present invention;

[0021] Figure 6 A schematic diagram of the partial structure of the connection between the slide seat of an angle-adjustable hydraulic jack top-to-top test device and the bottom end of the test jack cylinder provided by an embodiment of the present invention;

[0022] Figure 7 A schematic diagram of a slider structure of an angle-adjustable hydraulic jack top-to-top test device provided by an embodiment of the present invention;

[0023] Figure 8 A schematic diagram of a partial structure of a connection between a jack fixing seat and a bottom end of a loading jack cylinder of an angle-adjustable hydraulic jack top-to-top test device provided by an embodiment of the present invention;

[0024] Fig. 9 A principle structural diagram of a hydraulic jack top-to-top test device with an adjustable angle for determining the travel of a slider provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0025] See also Figure 1 , Figure 2 and Figure 3An angle-adjustable hydraulic jack top test device provided by an embodiment of the present invention comprises a base 2, wherein the base 2 comprises a bottom plate 21, at least two mutually parallel base main ribs 23 vertically welded on the bottom plate 21, a U-shaped orifice plate 24 vertical to the bottom plate 21 is welded between one end of each two base main ribs 23, a jack fixing seat 3 is fixedly arranged between the other ends of each two base main ribs 23, a slider 6 that can slide back and forth on a slide groove formed between the two base main ribs 23 is arranged in the middle of each two base main ribs 23, and a slider 4 that can move up and down on the side wall of the U-shaped orifice plate 24 is arranged on the side wall of the U-shaped orifice plate 24 between the two base main ribs 23. The bottom end of the cylinder of the test jack 5 is hinged to the slider 4, and the piston rod end of the test jack 5 is connected to one end of the slider 6. The piston rod end of the loading jack 8 is connected to the other end of the slider 6, and the bottom end of the cylinder of the loading jack 8 is connected to the jack fixing seat 3. The jack fixing seat 3 includes a fixing plate 31 welded on the inner side wall of the main rib plate 23 of the base, a second U-shaped fixing ear seat 32 welded on the side wall of the fixing plate 31, and a fixing connecting plate 33 welded between two adjacent fixing plates 31. The bottom end of the cylinder of the loading jack 8 is hinged to the second U-shaped fixing ear seat 32.

[0026] In order to enhance the stability of the test device during the test, the bottom of the base 2 is fixedly connected to the base 1. As a specific embodiment of the present invention, in order to facilitate the installation and disassembly of the base 2 and the base 1, a certain number of through holes are arranged around the bottom plate 21 of the base 2, and corresponding threaded holes are arranged on the base 1 at positions corresponding to the through holes on the bottom plate 21. The bottom plate 21 is fixedly connected to the base 1 by bolts 16, washers 13, spring washers 14, and nuts 15, so that the base 2 is tightly fixed to the base 1. Of course, as other specific embodiments of the present invention, the base 2 can also be directly welded to the base 1 through the bottom plate 21. In addition, four hanging blocks 9 that match the position of the electro-hydraulic control bracket 10 and are used to connect the electro-hydraulic control bracket 10 are welded on one side of the base 1. The four hanging blocks 9 are fixedly connected to the electro-hydraulic control bracket 10 by bolts 11 and nuts 12, respectively. The electro-hydraulic control bracket 10 is used to support the electro-hydraulic control element ( Figure 1 The electro-hydraulic control element is not shown in the figure. The electro-hydraulic control element can control the inlet and outlet of the test jack 5 and the loading jack 8 to promote the extension and retraction of the test jack 5 and the loading jack 8. When the test jack 5 and the loading jack 8 are extended and retracted, the slider 6 connected thereto is driven to reciprocate on the slide groove formed between the two base main ribs 23. The number of reciprocating movements of the slider 6 can be counted by a sensor (not shown in the figure). The number of reciprocating movements of the slider 6 is also the number of reciprocating movements of the test jack 5. By counting the number of reciprocating movements of the test jack 5, it can be determined whether the performance of the test jack 5 meets the requirements.

[0027] See also Figure 4 and Figure 5 As a specific embodiment of the present invention, the slide 4 includes a slide baffle 41 and slide side plates 42 vertically welded on both sides of the slide baffle 41, and first U-shaped fixing ears 43 are welded on the inner side walls of the slide side plates 42. The slide baffle 41 and the stop plate 26 are respectively provided with two pairs of through holes matching the U-shaped holes of the U-shaped orifice plate 24, and the slide baffle 41 and the stop plate 26 are respectively attached to the inner and outer sides of the U-shaped orifice plate 24, and the bolts 22 pass through the through holes on the slide baffle 41, the U-shaped holes of the U-shaped orifice plate 24 and the through holes on the stop plate 26 in sequence, and the ends of the bolts 22 are engaged by the spring washers 28, washers 29 and nuts 27, so that the slide 4 is fixedly connected to a certain position on the U-shaped orifice plate 24. The bottom end of the cylinder of the test jack 5 is hinged to the first U-shaped fixed ear seat 43. When it is necessary to adjust the angle between the test jack 5 and the loading jack 8, it is only necessary to loosen the nut 27, move the slide baffle 41 and the stop plate 26 upward or downward on the U-shaped hole of the U-shaped hole plate 24 to a predetermined position, and then tighten the nut 27. The angle between the test jack 5 and the loading jack 8 can be conveniently adjusted by adjusting the height of the slide 4 on the U-shaped hole plate 24, thereby more realistically simulating the actual working condition of the push jack, and more accurately detecting the performance indicators of the hydraulic jack when there is a certain angle change between the load and the hydraulic jack in actual working conditions.

[0028] See also Figure 6 As a specific embodiment of the present invention, a pin hole is provided at the bottom end of the cylinder of the test jack 5, and a first pin 44 is installed on the pin hole at the bottom end of the cylinder of the test jack 5, and both ends of the first pin 44 are supported on the first U-shaped fixing ear seat 43. In order to fix the end of the first pin 44 on the first U-shaped fixing ear seat 43, a first pressing block 45 is provided at the connection between the first U-shaped fixing ear seat 43 and the first pin 44, and through holes with matching positions and sizes are respectively provided on the first U-shaped fixing ear seat 43 and the first pressing block 45, and the second pin 46 passes through the through holes on the first U-shaped fixing ear seat 43 and the first pressing block 45 to fix the first pressing block 45 on the first U-shaped fixing ear seat 43, so that the end of the first pin 44 is limited on the first U-shaped fixing ear seat 43 by the first pressing block 45. At the same time, a pin stop seat 47 is welded at the through hole of the first U-shaped fixing ear seat 43, and a U-shaped card 48 is inserted on the pin stop seat 47, which can fix the second pin shaft 46 on the through hole of the first U-shaped fixing ear seat 43 and the first pressure block 45, ensuring that the first pressure block 45 can fix the end of the first pin shaft 44 in the first U-shaped fixing ear seat 43.

[0029] See also Figure 7As a specific embodiment of the present invention, the slider 6 includes a slider body 61, and a pair of parallel connecting blocks 62 are arranged on the upper part of one end of the slider body 61. The pair of connecting blocks 62 and the piston rod end of the test jack 5 are provided with mutually matching pin holes. The piston rod end of the test jack 5 and the connecting block 62 are connected together by a pin 18 through the pin hole. In order to prevent the pin 18 from falling off from the piston rod end of the test jack 5 and the pin hole on the connecting block 62, a pin stopper 65 is welded on the pin hole of the connecting block 62, and a U-shaped card is inserted into the pin stopper 65 to lock the pin 18. A pair of parallel connecting ear plates 63 are provided at the other end of the slider body 61. The pair of connecting ear plates 63 and the piston rod end of the loading jack 8 are provided with mutually matching pin holes. The piston rod end of the loading jack 8 and the connecting ear plate 63 are connected together by a pin 19 through the pin holes. In order to prevent the pin 19 from falling off from the pin holes on the piston rod end of the loading jack 8 and the connecting ear plate 63, a pin block seat 66 is also welded at the pin hole of the connecting ear plate 63, and a U-shaped card 20 is inserted on the pin block seat 66 for locking the pin 19.

[0030] At the same time, two limit blocks 64 are welded on both sides of the slider body 61. The distance between the two ends of the limit blocks 64 on both sides of the slider body 61 matches the spacing between the two adjacent base main ribs 23, which can ensure that the slider 6 can be installed in the slide groove formed by the two adjacent base main ribs 23 and slide back and forth in the slide groove formed by the two adjacent base main ribs 23.

[0031] Furthermore, in order to prevent the slider 6 from falling off when sliding back and forth in the slide groove formed by two adjacent base main ribs 23 , a guide plate 25 is welded to the top of the middle portion of the base main rib 23 to limit the slider 6 .

[0032] See also Figure 5 and Figure 8As a specific embodiment of the present invention, a pin hole is provided at the bottom end of the cylinder of the loading jack 8, and the third pin 34 is installed on the pin hole at the bottom end of the cylinder of the loading jack 8, and both ends of the third pin 34 are supported on the second U-shaped fixing ear seat 32. In order to fix the end of the third pin 34 on the second U-shaped fixing ear seat 32, a second pressing block 35 is provided at the connection between the second U-shaped fixing ear seat 32 and the third pin 34. Through holes with matching positions and sizes are respectively provided on the second U-shaped fixing ear seat 32 and the second pressing block 35, and the fourth pin 36 passes through the through holes on the second U-shaped fixing ear seat 32 and the second pressing block 35 to fix the second pressing block 35 on the second U-shaped fixing ear seat 32, so that the end of the third pin 34 is limited on the second U-shaped fixing ear seat 32 by the second pressing block 35. In addition, the other end of the fourth pin shaft 36 is locked with a D-shaped card 38 to ensure that the fourth pin shaft 36 will not slide out from the second pressing block 35 and the second U-shaped fixing ear seat 32, and ensure that the second pressing block 35 limits the end of the third pin shaft 34 on the second U-shaped fixing ear seat 32.

[0033] An angle-adjustable hydraulic jack top-to-top test device provided in an embodiment of the present invention has the following working principle:

[0034] Loosen the nut 27 on the outside of the stop plate 26, then move the slide block 41 and the stop plate 26 to the predetermined position on the U-shaped hole of the U-shaped hole plate 24 and tighten the nut 27, so as to adjust the height of the slide 4 fixed on the U-shaped hole plate 24 to an appropriate height, thereby achieving the purpose of adjusting the angle between the test jack 5 and the loading jack 8. Fig. 9, the length of the fully retracted test jack 5 is B, at this time the slider 6 is in the left limit position (the end with the slide seat 4 is the left), and the horizontal angle of the test jack 5 is θ. If the fully extended stroke of the test jack 5 is E, the fully extended length of the test jack 5 is C=B+E, at this time the slider 6 reaches the right limit position, and the horizontal angle of the test jack 5 is γ. The stroke D of the slider 6 is the distance between the left limit position and the right limit position of the slider 6, that is, D=C*cos(γ)-Bcos(θ), where γ=arcsin(A / C), θ=arcsin(A / B), that is, D=(A+B)*cos(arcsin(A / (B+E)))-Bcos(arcsin(A / B)). Since the fully retracted length B of the test jack 5 is fixed, when the cylinder bottom height A of the test jack 5 is fixed, the stroke D of the slider 6 depends on the fully extended stroke E of the test jack 5. In this way, the stroke of the slider 6 can be determined by the stroke of the test jack 5, and then the angle between the test jack 5 and the loading jack 8 can be controlled within a certain range. Start the loading jack 8, so that the loading jack 8 applies a certain load to the test jack 5. The load size applied by the loading jack 8 on the test jack 5 can be set by adjusting the working pressure of the safety valve in the loading jack 8. By applying loads of different sizes on the test jack 5 by the loading jack 8, the working resistance of the test jack 5 under the target working condition can be simulated. Then, the inlet and outlet liquids of the test jack 5 and the loading jack 8 are controlled by the electro-hydraulic control element fixed on the electro-hydraulic control bracket 10, so that the test jack 5 and the loading jack 8 are extended and retracted. When the test jack 5 and the loading jack 8 are extended and retracted, the slider 6 connected thereto is driven to reciprocate on the slideway formed between the two base main ribs 23. The number of reciprocating motions of the slider 6 can be counted by a sensor (not shown in the figure), and the number of reciprocating motions of the slider 6 is also the number of reciprocating motions of the test jack 5. By counting the number of reciprocating motions of the test jack 5 , it can be determined whether the performance of the test jack 5 meets the requirements.

[0035] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An angle-adjustable hydraulic jack top-to-top test device, characterized in that: The invention comprises a base (2), wherein the base (2) comprises a bottom plate (21), at least two base main rib plates (23) vertically fixed on the bottom plate (21), one end of each of the two base main rib plates (23) being fixedly provided with a U-shaped hole plate (24) vertical to the bottom plate (21), the other end of each of the two base main rib plates (23) being fixedly provided with a jack fixing seat (3), and the middle of each of the two base main rib plates (23) being provided with a A slider (6) is slidable forward and backward between the two base main ribs (23); a slide seat (4) is provided on the side wall of the U-shaped orifice plate (24) and is movable up and down on the side wall of the U-shaped orifice plate (24); the bottom end of the cylinder of the test jack (5) is hinged to the slide seat (4), and the piston rod end is connected to one end of the slider (6); the piston rod end of the loading jack (8) is connected to the other end of the slider (6), and the bottom end of the cylinder is connected to the jack fixing seat (3); The slide seat (4) comprises a slide seat baffle (41) and slide seat side plates (42) vertically fixed on both sides of the slide seat baffle (41); first U-shaped fixing ear seats (43) are fixedly arranged on the inner side walls of the slide seat side plates (42); the slide seat baffle (41) and the stop plate (26) are fixedly connected to the inner and outer sides of the U-shaped hole plate (24) by bolts (22) passing through the U-shaped hole of the U-shaped hole plate (24); the bottom end of the cylinder of the test jack (5) is hinged to the first U-shaped fixing ear seat (43); and the angle between the test jack (5) and the loading jack (8) can be adjusted by adjusting the fixing height of the slide seat baffle (41) and the stop plate (26) on the U-shaped hole plate (24); The slider (6) comprises a slider body (61), a connection block (62) for connecting to the piston rod end of the test jack (5) is arranged at the upper part of one end of the slider body (61), a connection ear plate (63) for connecting to the piston rod end of the loading jack (8) is arranged at the other end of the slider body (61), and limit blocks (64) are respectively arranged on both sides of the slider body (61).

2. The angle-adjustable hydraulic jack top-to-top test device according to claim 1, characterized in that: A first pin shaft (44) is provided at the bottom end of the cylinder of the test jack (5), and both ends of the first pin shaft (44) are supported on the first U-shaped fixing ear seat (43). A first pressure block (45) is provided at the connection between the first U-shaped fixing ear seat (43) and the first pin shaft (44), and a second pin shaft (46) passes through the through holes on the first U-shaped fixing ear seat (43) and the first pressure block (45) to fix the first pressure block (45) on the first U-shaped fixing ear seat (43), and the end of the first pin shaft (44) is limited on the first U-shaped fixing ear seat (43) by the first pressure block (45).

3. The angle-adjustable hydraulic jack top-to-top test device according to claim 1, characterized in that: The distance between the two ends of the limit blocks (64) on both sides of the slider body (61) matches the spacing between two adjacent base main ribs (23), and the slider (6) can slide back and forth between the grooves formed by the two adjacent base main ribs (23).

4. The angle-adjustable hydraulic jack top-to-top test device according to claim 3 is characterized in that: A guide plate (25) is fixedly arranged at the top of the middle part of the base main rib plate (23) to prevent the sliding block (6) from falling off between two adjacent base main rib plates (23).

5. The angle-adjustable hydraulic jack top-to-top test device according to claim 4 is characterized in that: The jack fixing seat (3) comprises a fixing plate (31) fixedly arranged on the inner side wall of the main rib plate (23) of the base, a second U-shaped fixing ear seat (32) fixedly arranged on the side wall of the fixing plate (31), and a fixing connecting plate (33) fixedly connected between two adjacent fixing plates (31), and the cylinder bottom end of the loading jack (8) is hinged to the second U-shaped fixing ear seat (32).

6. The angle-adjustable hydraulic jack top-to-top test device according to claim 5, characterized in that: A third pin shaft (34) is provided at the bottom end of the cylinder of the loading jack (8), and both ends of the third pin shaft (34) are supported on the second U-shaped fixing ear seat (32). A second pressure block (35) is provided at the connection between the second U-shaped fixing ear seat (32) and the third pin shaft (34). A fourth pin shaft (36) passes through the through holes on the second U-shaped fixing ear seat (32) and the second pressure block (35) to fix the second pressure block (35) on the second U-shaped fixing ear seat (32), and the end of the third pin shaft (34) is limited on the second U-shaped fixing ear seat (32) through the second pressure block (35).

7. The angle-adjustable hydraulic jack top-to-top test device according to any one of claims 1 to 6, characterized in that: The base (2) is fixedly connected to the base (1) via the bottom plate (21).

8. The angle-adjustable hydraulic jack top-to-top test device according to claim 7, characterized in that: A hanging block (9) is welded on the base (1), and an electro-hydraulic control bracket (10) for supporting an electro-hydraulic control element is arranged on the hanging block (9).

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