Multi-combination type hydraulic jack head

Abstract

The utility model relates to the technical field of hydraulic jack heads, in particular to a multi-combination type hydraulic jack head which comprises a hydraulic jack, a positioning column is fixedly connected to the output end of the hydraulic jack, and the positioning column is located at the position of the central axis of the output end of the hydraulic jack. A combinable top head is arranged at the output end of the hydraulic jack and comprises a top head assembly I, a top head assembly II and a top head assembly III. According to the utility model, the top head with the bolt is screwed on the top head with the threaded hole, so that the lengthened combined top head can be obtained, the combined top head can be used according to the diameter of the motor coupling to be pulled out and the required length, the selected combined top head is mounted on the hydraulic jack, and after a motor shaft is aligned with the combined top head, the combined top head can be pulled out. The motor coupler is fixed through the fixing plate, the screw, the first nut and the second nut, the motor coupler is pulled out through the jack, work can be facilitated, and work efficiency and safety are improved.

Description

Technical Field

[0001] The utility model relates to a multiple combined jack, in particular to a multiple combined hydraulic jack jack, belonging to the technical field of hydraulic jacks. Background Art

[0002] A hydraulic jack is a jack based on the principle of hydraulic transmission. The hydraulic jack transmits power through the pressure of the liquid to achieve the purpose of lifting heavy objects. The hydraulic jack has the advantages of compact structure, easy operation, large and stable lifting force. In addition, the hydraulic jack can also achieve long-term lifting and support, and it is easy to control the lifting speed and height.

[0003] In the maintenance of electrical equipment and mechanical equipment, it is often necessary to pull out the motor-end coupling and the reduction gearbox-end coupling and replace the motor bearings. The existing method is to use a three-clawed lama or a single-column hydraulic jack to pull out the motor-end coupling and the reduction gearbox-end coupling. However, the existing three-clawed lama or single-column hydraulic jack does not have a suitable jack. When a hydraulic jack of a larger tonnage is used, the single-column telescopic diameter of the hydraulic jack is often larger than the diameter of the coupling shaft to be pulled out, resulting in the frequent use of a hammer or bolt as a jack, and the balance point is often unable to be found, which brings inconvenience to the work and greatly reduces the work efficiency. At the same time, there are safety hazards.

[0004] Therefore, it is urgent to improve the various combined hydraulic jack heads to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide a variety of combined hydraulic jack heads. By tightening a head with a bolt onto a head with a threaded hole, a lengthened combinable head of times or times can be obtained. The head can be used in combination according to the diameter of a motor coupling to be pulled out and the required length. The selected combinable head is installed on the hydraulic jack. After the motor shaft is aligned with the combinable head, the motor coupling is fixed with a fixing plate, a screw rod, a nut one and a nut two. The motor coupling is pulled out using a jack, which can facilitate work and improve work efficiency and safety.

[0006] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include: a hydraulic jack, a positioning column is fixedly connected to the output end of the hydraulic jack, the positioning column is located at the central axis position of the output end of the hydraulic jack, and a combinable plug is provided on the output end of the hydraulic jack, and the combinable plug includes a plug assembly 1 for different diameter requirements, a plug assembly 2 for different diameter requirements, and a plug assembly 3 for different diameter requirements;

[0007] The plug assembly 1 includes a plug No. 1, a plug No. 1, a plug No. 1, a plug No. 1 and a plug No. 1. One end of the plug No. 1 and one end of the plug No. 1 are fixedly connected with bolts, and the two bolts are respectively located at the central axis of the plug No. 1 and the central axis of the plug No. 1. One end of the plug No. 1 and one end of the plug No. 1 are respectively provided with threaded holes, and the two threaded holes are respectively located at the central axis of the plug No. 1 and the central axis of the plug No. 1. The other end of the plug No. 1 , the other end of the No. 1 plug three, the other end of the No. 1 plug two and the other end of the No. 1 plug four are all provided with positioning holes, the positioning holes are movably installed with the positioning columns, the height of the No. 1 plug one is equal to the height of the No. 1 plug two, the height of the No. 1 plug three is equal to the height of the No. 1 plug four, the height of the No. 1 plug four is higher than the height of the No. 1 plug one, the upper and lower surfaces of the No. 1 plug one, the upper and lower surfaces of the No. 1 plug two, the upper and lower surfaces of the No. 1 plug three and the upper and lower surfaces of the No. 1 plug four are all the same.

[0008] Preferably, the plug assembly 2 includes a No. 2 plug 1, a No. 2 plug 2, a No. 2 plug 3 and a No. 2 plug 4, one end of the No. 2 plug 1 and one end of the No. 2 plug 3 are fixedly connected with bolts, and the two bolts are respectively located at the central axis of the No. 2 plug 1 and the central axis of the No. 2 plug 3, one end of the No. 2 plug 2 and one end of the No. 2 plug 4 are each provided with a threaded hole, and the two threaded holes are respectively located at the central axis of the No. 2 plug 2 and the central axis of the No. 2 plug 4, and the No. 2 plug 1 The other end, the other end of the No. 2 plug three, the other end of the No. 2 plug two and the other end of the No. 2 plug four are all provided with positioning holes, the height of the No. 2 plug one is equal to the height of the No. 2 plug two, the height of the No. 2 plug three is equal to the height of the No. 2 plug four, the height of the No. 2 plug four is higher than the height of the No. 2 plug one, the upper and lower surfaces of the No. 2 plug one, the upper and lower surfaces of the No. 2 plug two, the upper and lower surfaces of the No. 2 plug three and the upper and lower surfaces of the No. 2 plug four are all the same and smaller than the upper and lower surfaces of the No. 1 plug one.

[0009] Preferably, the plug assembly three includes a No. 3 plug one, a No. 3 plug two, a No. 3 plug three and a No. 3 plug four, one end of the No. 3 plug one and one end of the No. 3 plug three are fixedly connected with bolts, and the two bolts are respectively located at the central axis of the No. 3 plug one and the central axis of the No. 3 plug three, one end of the No. 3 plug two and one end of the No. 3 plug four are respectively provided with threaded holes, and the two threaded holes are respectively located at the central axis of the No. 3 plug two and the central axis of the No. 3 plug four, and the No. 3 plug one The other end, the other end of the No. 3 plug three, the other end of the No. 3 plug two and the other end of the No. 3 plug four are all provided with positioning holes, the height of the No. 3 plug one is equal to the height of the No. 3 plug two, the height of the No. 3 plug three is equal to the height of the No. 3 plug four, the height of the No. 3 plug four is higher than the height of the No. 3 plug one, the upper and lower surfaces of the No. 3 plug one, the upper and lower surfaces of the No. 3 plug two, the upper and lower surfaces of the No. 3 plug three and the upper and lower surfaces of the No. 3 plug four are all the same and smaller than the upper and lower surfaces of the No. 2 plug one.

[0010] Preferably, a fixing clamp is provided at one end of the hydraulic jack away from the positioning column, and a clamp seat is fixedly connected to a side wall of the fixing clamp away from the hydraulic jack.

[0011] Preferably, two clamping plate grooves are symmetrically provided on a side wall of the fixed clamping plate close to the hydraulic jack, and two pads are provided on a side wall of the fixed clamping plate away from the hydraulic jack.

[0012] Preferably, a motor shaft is provided at one end of the combinable jack away from the hydraulic jack, a motor coupling is installed on the outer wall of the motor shaft, and a plurality of mounting holes are symmetrically opened on the flange of the motor coupling.

[0013] Preferably, two screws are symmetrically arranged between the fixed clamping plate and the motor coupling, and the two screws are parallel to the hydraulic jack, one end of the two screws extends through the clamping plate groove and the pad and is threadedly connected with nut 1, and nut 1 is in conflict with the pad, and the other end of the two screws extends through the corresponding mounting holes and is threadedly connected with nut 2, and nut 2 is in conflict with the flange of the motor coupling.

[0014] The utility model has at least the following beneficial effects:

[0015] 1. By tightening the jack with bolts onto the jack with threaded holes, a combinable jack that is lengthened by times or times can be obtained. It can be used in combination according to the diameter of the motor coupling to be pulled out and the required length. Install the selected combinable jack on the hydraulic jack, align the motor shaft with the combinable jack, fix the motor coupling with a fixing plate, screw, nut one and nut two, and use a jack to pull out the motor coupling, which can facilitate work and improve work efficiency and safety.

[0016] 2. By placing the jack with bolts and the jack with threaded holes in a group, the combinable jack can be stored when not in use, thereby facilitating the storage and carrying of the combinable jack. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 A cross-sectional view of a combinable plug provided by the utility model;

[0019] Figure 2 A three-dimensional schematic diagram of the hydraulic jack provided by the utility model;

[0020] Figure 3 A schematic cross-sectional view of the screw provided by the utility model;

[0021] Figure 4 The utility model provides Figure 3 Enlarged schematic diagram at point A in the middle.

[0022] In the figure, 1, hydraulic jack; 2, positioning column; 3, combinable jack; 31, jack assembly one; 32, jack assembly two; 33, jack assembly three; 311, No. 1 jack one; 312, No. 1 jack two; 313, No. 1 jack three; 314, No. 1 jack four; 321, No. 2 jack one; 322, No. 2 jack two; 323, No. 2 jack three; 324, No. 2 jack four; 331, No. 3 jack one; 332, No. 3 jack two; 333, No. 3 jack three; 334, No. 3 jack four; 4, bolt; 5, threaded hole; 6, positioning hole; 7, fixing splint; 8, splint seat; 9, splint groove; 10, pad; 11, motor shaft; 12, motor coupling; 13, mounting hole; 14, screw; 15, nut one; 16, nut two. DETAILED DESCRIPTION

[0023] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0024] like Figure 1-Figure 4 As shown, the embodiment provides a variety of combined hydraulic jack heads, the output end of the hydraulic jack 1 is fixedly connected with a positioning column 2, the positioning column 2 is located at the central axis position of the output end of the hydraulic jack 1, and the output end of the hydraulic jack 1 is provided with a combinable head 3, the combinable head 3 includes a head assembly 1 31 for different diameter requirements, a head assembly 2 32 for different diameter requirements and a head assembly 3 33 for different diameter requirements, and the combinable head 3 is used to resist the motor shaft 11 in the motor coupling 12;

[0025] The top head assembly 31 includes a top head 1 311, a top head 2 312, a top head 313 and a top head 4 314. One end of the top head 1 311 and one end of the top head 313 are fixedly connected with bolts 4, and the two bolts 4 are respectively located at the central axis of the top head 1 311 and the central axis of the top head 313. One end of the top head 2 312 and one end of the top head 4 314 are provided with threaded holes 5, and the two threaded holes 5 are respectively located at the central axis of the top head 2 312 and the central axis of the top head 4 314. The other end of the No. 1 top head 313, the other end of the No. 1 top head 2 312 and the other end of the No. 1 top head 4 314 are all provided with a positioning hole 6, the positioning hole 6 is movably installed with the positioning column 2, the height of the No. 1 top head 1 311 is equal to the height of the No. 1 top head 2 312, the height of the No. 1 top head 313 is equal to the height of the No. 1 top head 4 314, the height of the No. 1 top head 4 314 is higher than the height of the No. 1 top head 1 311, and the upper and lower surfaces of the No. 1 top head 1 311, the upper and lower surfaces of the No. 1 top head 2 312, the upper and lower surfaces of the No. 1 top head 313 and the upper and lower surfaces of the No. 1 top head 4 314 are all the same;

[0026] The No. 1 plug 311 uses a 70mm diameter steel rod to process a length of 130mm and processes an M16 bolt 4 at a distance of 30mm from one end of the steel rod;

[0027] For the No. 1 plug, No. 2 312, a 70mm diameter steel rod is used to process a length of 100mm and an M16 nut is processed at the center of one end of the steel rod;

[0028] The first three low heads use a 70mm diameter steel rod with a processing length of 180mm, and process an M16 bolt 4 at a distance of 30mm from one end of the steel rod;

[0029] The No. 1 plug 4 314 uses a 70mm diameter steel rod with a processing length of 150mm, and processes an M16 nut at the center of one end of the steel rod;

[0030] The No. 1 plug 2 312 and the No. 1 plug 4 314 can be used separately, and the No. 1 plug 1 311 and the No. 1 plug 3 313 need to be connected to the No. 1 plug 2 312 or the No. 1 plug 4 314 through threads for use in combination, and the use length of the plug can be lengthened through cooperation.

[0031] Secondly, if Figure 1 As shown, the top assembly 2 32 includes a No. 2 top 1 321, a No. 2 top 2 322, a No. 2 top 323 and a No. 2 top 4 324. One end of the No. 2 top 1 321 and one end of the No. 2 top 323 are fixedly connected with bolts 4, and the two bolts 4 are respectively located at the central axis of the No. 2 top 1 321 and the central axis of the No. 2 top 323. One end of the No. 2 top 2 322 and one end of the No. 2 top 4 324 are both provided with threaded holes 5, and the two threaded holes 5 are respectively located at the central axis of the No. 2 top 2 322 and the central axis of the No. 2 top 4 324. 1, the other end of the No. 2 top head 323, the other end of the No. 2 top head 2 322 and the other end of the No. 2 top head 4 324 are all provided with a positioning hole 6, the height of the No. 2 top head 1 321 is equal to the height of the No. 2 top head 2 322, the height of the No. 2 top head 3 323 is equal to the height of the No. 2 top head 4 324, the height of the No. 2 top head 4 324 is higher than the height of the No. 2 top head 1 321, the upper and lower surfaces of the No. 2 top head 1 321, the upper and lower surfaces of the No. 2 top head 2 322, the upper and lower surfaces of the No. 2 top head 3 323 and the upper and lower surfaces of the No. 2 top head 4 324 are all the same and smaller than the upper and lower surfaces of the No. 1 top head 1 311;

[0032] The second head 321 uses a 50mm diameter steel rod to process a length of 130mm and processes an M16 bolt 4 at a distance of 30mm from one end of the steel rod;

[0033] The No. 2 plug 2 322 uses a 50mm diameter steel rod to process a length of 100mm and processes an M16 nut at the center of one end of the steel rod;

[0034] The second and third heads use a 50mm diameter steel rod to process a length of 180mm, and process an M16 bolt 4 at a distance of 30mm from one end of the steel rod;

[0035] The No. 2 plug 4 324 uses a 50mm diameter steel rod with a processing length of 150mm, and processes an M16 nut at the center of one end of the steel rod;

[0036] The No. 2 top head 2 322 and the No. 2 top head 4 324 can be used separately, and the No. 2 top head 1 321 and the No. 2 top head 323 need to be connected to the No. 2 top head 2 322 or the No. 2 top head 4 324 through threads for cooperation.

[0037] Further, such as Figure 1 As shown, the top assembly three 33 includes a No. 3 top 1 331, a No. 3 top 2 332, a No. 3 top 333 and a No. 3 top 4 334. One end of the No. 3 top 1 331 and one end of the No. 3 top 333 are fixedly connected with bolts 4, and the two bolts 4 are respectively located at the central axis of the No. 3 top 1 331 and the central axis of the No. 3 top 333. One end of the No. 3 top 2 332 and one end of the No. 3 top 4 334 are both provided with threaded holes 5, and the two threaded holes 5 are respectively located at the central axis of the No. 3 top 2 332 and the central axis of the No. 3 top 4 334. 1, the other end of the No. 3 plug 3 333, the other end of the No. 3 plug 2 332 and the other end of the No. 3 plug 4 334 are all provided with a positioning hole 6, the height of the No. 3 plug 1 331 is equal to the height of the No. 3 plug 2 332, the height of the No. 3 plug 3 333 is equal to the height of the No. 3 plug 4 334, the height of the No. 3 plug 4 334 is higher than the height of the No. 3 plug 1 331, the upper and lower surfaces of the No. 3 plug 1 331, the upper and lower surfaces of the No. 3 plug 2 332, the upper and lower surfaces of the No. 3 plug 3 333 and the upper and lower surfaces of the No. 3 plug 4 334 are all the same and smaller than the upper and lower surfaces of the No. 2 plug 1 321;

[0038] The No. 3 plug 331 uses a 25mm diameter steel rod to process a length of 130mm and processes an M16 bolt 4 at a distance of 30mm from one end of the steel rod;

[0039] The No. 3 plug 2 332 uses a 25mm diameter steel rod to process a length of 100mm and processes an M16 nut at the center of one end of the steel rod;

[0040] The three-three low-head machine uses a 25mm diameter steel rod to process a length of 180mm, and processes an M16 bolt 4 at a distance of 30mm from one end of the steel rod;

[0041] The No. 3 plug 4 334 uses a 25mm diameter steel rod to process a length of 150mm, and processes an M16 nut at the center of one end of the steel rod;

[0042] The No. 3 plug 2 332 and the No. 3 plug 4 334 can be used separately, and the No. 3 plug 1 331 and the No. 3 plug 3 333 need to be connected to the No. 3 plug 2 332 or the No. 3 plug 4 334 through threads for cooperation.

[0043] Furthermore, if Figure 1 , Figure 3 as well as Figure 4 As shown, a fixed splint 7 is provided at one end of the hydraulic jack 1 away from the positioning column 2, a splint seat 8 is fixedly connected to the side wall of the fixed splint 7 away from the hydraulic jack 1, two splint grooves 9 are symmetrically provided on the side wall of the fixed splint 7 close to the hydraulic jack 1, two pads 10 are provided on the side wall of the fixed splint 7 away from the hydraulic jack 1, a motor shaft 11 is provided at one end of the combinable head 3 away from the hydraulic jack 1, a motor coupling 12 is installed on the outer wall of the motor shaft 11, a plurality of mounting holes 13 are symmetrically provided on the flange of the motor coupling 12, the splint groove 9 can be pulled out in cooperation with motor couplings 12 of various diameters, and the pads 10 increase the force-bearing area of ​​the fixed splint 7.

[0044] Furthermore, Figure 2 , Figure 3 as well as Figure 4 As shown, two screw rods 14 are symmetrically arranged between the fixed splint 7 and the motor coupling 12, and the two screw rods 14 are parallel to the hydraulic jack 1, one end of the two screw rods 14 extends through the splint groove 9 and the pad 10 and is threadedly connected with a nut 15, and the nut 15 is in conflict with the pad 10, and the other end of the two screw rods 14 extends through the corresponding mounting holes 13 and is threadedly connected with a nut 2 16, and the nut 2 16 is in conflict with the flange of the motor coupling 12, and the two screw rods 14 are used to fix the motor coupling 12 and the fixed splint 7.

[0045] like Figure 1-Figure 4As shown, the principle of the various combined hydraulic jack heads provided in this embodiment is as follows: in the maintenance of electrical equipment and mechanical equipment, it is often necessary to pull out the motor end coupling and the reduction box end coupling and replace the motor shaft 11 bearing. When the motor coupling 12 needs to be pulled out, the hydraulic jack 1 is placed on the fixed clamping plate 7, and the combined head 3 required to be used is selected according to the diameter of the motor coupling 12 and the required length. Taking the head assembly 1 31 as an example, there are six combinations: 1. The length of the No. 1 head 2 312 used alone is 100mm; 2. The length of the No. 1 head 4 314 used alone is 150mm; 3. Tighten the bolt 4 on the No. 1 head 1 311 into the threaded hole 5 of the No. 1 head 2 312. The length of the No. 1 head 1 311 and the No. 1 head 2 312 used together is 200mm; 4. Put the No. 1 head 1 311 on 1. Tighten the bolt 4 into the threaded hole 5 of the No. 1 top head 4 314, and the length of the No. 1 top head 1 311 and the No. 1 top head 4 314 is 250mm; 5. Tighten the bolt 4 on the No. 1 top head 3 313 into the threaded hole 5 of the No. 1 top head 2 312, and the length of the No. 1 top head 3 313 and the No. 1 top head 2 312 is 250mm; 6. Tighten the bolt 4 on the No. 1 top head 3 313 into the threaded hole 5 of the No. 1 top head 4 314, and the length of the No. 1 top head 3 313 and the No. 1 top head 4 314 is 300mm; install the selected combinable top head 3 on the hydraulic jack 1, align the motor shaft 11 with the combinable top head 3, use the fixing splint 7, the pad 10, the screw 14, the nut 1 15 and the nut 2 16 to fix the motor coupling 12, and then use the hydraulic jack 1 to pull out the motor coupling 12;

[0046] The combinable jack 3 can be used in combination according to actual needs. By tightening the jack with bolt 4 onto the jack with threaded hole 5, a jack extended to 1 or 3 times can be obtained. When not in use, the jack with bolt 4 and the nut can be placed as a group, which improves work efficiency and safety while also facilitating storage.

[0047] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0048] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0049] The above description shows and describes several preferred embodiments of the utility model, but as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A multi-combination hydraulic jack head, comprising a hydraulic jack (1), characterized in that: A positioning column (2) is fixedly connected to the output end of the hydraulic jack (1), and the positioning column (2) is located at the central axis position of the output end of the hydraulic jack (1). A combinable plug (3) is provided on the output end of the hydraulic jack (1), and the combinable plug (3) includes: a plug assembly 1 (31), a plug assembly 2 (32) and a plug assembly 3 (33); The plug assembly 1 (31) comprises: a plug 1 (311), a plug 2 (312), a plug 3 (313) and a plug 4 (314); one end of the plug 1 (311) and one end of the plug 3 (313) are both fixedly connected with bolts (4); two of the bolts (4) are respectively located at the central axis of the plug 1 (311) and the central axis of the plug 3 (313); one end of the plug 2 (312) and one end of the plug 4 (314) are both provided with threaded holes (5); two of the threaded holes (5) are respectively located at the central axis of the plug 2 (312) and the central axis of the plug 4 (314); the plug 1 (311) and the plug 3 (313) are both fixedly connected with bolts (4); two of the bolts (4) are respectively located at the central axis of the plug 1 (311) and the central axis of the plug 3 (313); The other end of the No. 1 plug three (313), the other end of the No. 1 plug two (312) and the other end of the No. 1 plug four (314) are all provided with positioning holes (6), and the positioning holes (6) are movably installed with the positioning column (2), the height of the No. 1 plug one (311) is equal to the height of the No. 1 plug two (312), the height of the No. 1 plug three (313) is equal to the height of the No. 1 plug four (314), the height of the No. 1 plug four (314) is higher than the height of the No. 1 plug one (311), and the upper and lower surfaces of the No. 1 plug one (311), the upper and lower surfaces of the No. 1 plug two (312), the upper and lower surfaces of the No. 1 plug three (313) and the upper and lower surfaces of the No. 1 plug four (314) are all the same.

2. The multiple combined hydraulic jack head according to claim 1, characterized in that: The second plug assembly (32) comprises: a No. 2 plug 1 (321), a No. 2 plug 2 (322), a No. 2 plug 3 (323) and a No. 2 plug 4 (324), one end of the No. 2 plug 1 (321) and one end of the No. 2 plug 3 (323) are both fixedly connected with bolts (4), and the two bolts (4) are respectively located at the central axis of the No. 2 plug 1 (321) and the central axis of the No. 2 plug 3 (323), one end of the No. 2 plug 2 (322) and one end of the No. 2 plug 4 (324) are both provided with threaded holes (5), and the two threaded holes (5) are respectively located at the central axis of the No. 2 plug 2 (322) and the central axis of the No. 2 plug 4 (324), and the No. 2 plug 1 (321) is provided with a threaded hole (5). ), the other end of the No. 2 plug three (323), the other end of the No. 2 plug two (322) and the other end of the No. 2 plug four (324) are all provided with positioning holes (6); the height of the No. 2 plug one (321) is equal to the height of the No. 2 plug two (322); the height of the No. 2 plug three (323) is equal to the height of the No. 2 plug four (324); the height of the No. 2 plug four (324) is higher than the height of the No. 2 plug one (321); the upper and lower surfaces of the No. 2 plug one (321), the upper and lower surfaces of the No. 2 plug two (322), the upper and lower surfaces of the No. 2 plug three (323) and the upper and lower surfaces of the No. 2 plug four (324) are all the same and smaller than the upper and lower surfaces of the No. 1 plug one (311).

3. The multiple combined hydraulic jack head according to claim 2, characterized in that: The plug assembly three (33) comprises: a plug No. 3 (331), a plug No. 3 (332), a plug No. 3 (333) and a plug No. 3 (334), one end of the plug No. 3 (331) and one end of the plug No. 3 (333) are both fixedly connected with bolts (4), and the two bolts (4) are respectively located at the central axis of the plug No. 3 (331) and the central axis of the plug No. 3 (333), one end of the plug No. 3 (332) and one end of the plug No. 3 (334) are both provided with threaded holes (5), and the two threaded holes (5) are respectively located at the central axis of the plug No. 3 (332) and the central axis of the plug No. 3 (334), and the plug No. 3 (331) and the plug No. 3 (331) are both fixedly connected with bolts (4), and the two bolts (4) are respectively located at the central axis of the plug No. 3 (331) and the central axis of the plug No. 3 (333), and the threaded holes (5) are respectively located at the central axis of the plug No. 3 (332) and the central axis of the plug No. 3 (334), and the ), the other end of the No. 3 plug three (333), the other end of the No. 3 plug two (332) and the other end of the No. 3 plug four (334) are all provided with positioning holes (6); the height of the No. 3 plug one (331) is equal to the height of the No. 3 plug two (332); the height of the No. 3 plug three (333) is equal to the height of the No. 3 plug four (334); the height of the No. 3 plug four (334) is higher than the height of the No. 3 plug one (331); the upper and lower surfaces of the No. 3 plug one (331), the upper and lower surfaces of the No. 3 plug two (332), the upper and lower surfaces of the No. 3 plug three (333) and the upper and lower surfaces of the No. 3 plug four (334) are all the same and smaller than the upper and lower surfaces of the No. 2 plug one (321).

4. The multiple combined hydraulic jack head according to claim 1, characterized in that: A fixed clamping plate (7) is provided at one end of the hydraulic jack (1) away from the positioning column (2), and a clamping plate seat (8) is fixedly connected to a side wall of the fixed clamping plate (7) away from the hydraulic jack (1).

5. The multiple combined hydraulic jack head according to claim 4, characterized in that: Two clamping plate grooves (9) are symmetrically provided on a side wall of the fixed clamping plate (7) close to the hydraulic jack (1), and two pads (10) are provided on a side wall of the fixed clamping plate (7) away from the hydraulic jack (1).

6. The multiple combined hydraulic jack head according to claim 5, characterized in that: A motor shaft (11) is provided at one end of the modular jack (3) away from the hydraulic jack (1), a motor coupling (12) is installed on the outer wall of the motor shaft (11), and a plurality of mounting holes (13) are symmetrically provided on the flange of the motor coupling (12).

7. The multiple combined hydraulic jack head according to claim 6, characterized in that: Two screw rods (14) are symmetrically arranged between the fixed clamping plate (7) and the motor coupling (12), and the two screw rods (14) are parallel to the hydraulic jack (1), one end of the two screw rods (14) extends through the clamping plate groove (9) and the backing plate (10) and is threadedly connected with a nut one (15), and the nut one (15) is in contact with the backing plate (10), and the other end of the two screw rods (14) extends through the corresponding mounting hole (13) and is threadedly connected with a nut two (16), and the nut two (16) is in contact with the flange of the motor coupling (12).

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