Combined jack

Abstract

The utility model discloses a combined jack, which comprises a telescopic component, a loading component and a supporting component, the telescopic component is provided with an outer pipe and an inner pipe, the inner pipe is positioned in the outer pipe and is movably connected with the outer pipe along the center line of the outer pipe, and the loading component is positioned in the inner pipe. And the loading component and the supporting component are movably mounted on the telescopic component in a detachable manner. According to the combined jack, the telescopic component, the load-carrying component and the supporting component are connected together in an assembling mode, and the telescopic component, the load-carrying component and the supporting component are all of compact structures, so that the space utilization rate of packaging and storing of the jack in a split state is larger than that of packaging and storing of the jack in an assembled state; according to the technical scheme, the jack is provided with the disassembly and assembly structure, and the space occupied by the jack for storing and packaging in a non-working state is reduced.

Description

Technical Field

[0001] The utility model relates to a combined jack. Background Art

[0002] Trailer RVs need to be equipped with jacks to obtain a stable and reliable ground-contacting support structure. There is a handle on the top of the jack. Turning the handle can move the screw mechanism inside the jack, thereby causing the inner tube of the jack to move relative to the outer tube. The inner tube is located inside the outer tube. After the inner tube moves relative to the outer tube, the jack forms a telescopic action as a whole; the inner tube, outer tube, screw mechanism and hand crank together constitute the telescopic part of the jack. The jack also includes a load-bearing component and a support component. The load-bearing component is used to connect to the part of the trailer RV that needs to be subjected to the supporting force, that is, the load-bearing component is directly connected to the trailer RV; the load-bearing component is fixed to the outer tube by welding. The support component is used to contact the ground. It is the only part of the jack that touches the ground in the working state. The load-bearing component is directly welded to the end of the inner tube. This type of jack in the prior art is an integrated structure, and each component is fixedly connected by welding. Although the volume of the jack is not large, the various parts of the jack extend in all directions in space, and the space occupied when stored or received is much larger than its volume. It is not difficult to understand that when the jack is not in use, it will take up a lot of space when stored and packaged in cartons or turnover boxes. Summary of the invention

[0003] The technical problem to be solved by the utility model is how to reduce the space occupied by the storage package of the jack in a non-use state, thereby obtaining a combined jack.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: the combined jack includes a telescopic component, a load-bearing component, and a supporting component. The telescopic component is provided with an outer tube and an inner tube. The inner tube is located inside the outer tube and is movably connected to the outer tube along the center line of the outer tube. The load-bearing component and the supporting component are both movably mounted on the telescopic component in a detachable manner. The load-bearing component is provided with a pipe sleeve, a load-bearing seat, and a clamping member. A through-type accommodating hole is provided inside the pipe sleeve. The telescopic component is also provided with a connecting member, which is installed on the outside of the outer tube. The connecting member extends in a direction parallel to the center line of the outer tube. The connecting member is provided with a connecting hole. The accommodating hole includes a hole I for accommodating the outer tube and a hole II for accommodating the connecting member. The hole I is connected to the hole II, and the center line of the hole I is parallel to the center line of the outer tube. The center line of the accommodating hole has the same contour shape of the cross section of the outer tube at the location where the connecting piece is installed. The clamping piece includes a limiting column, a spring, and a handle. The limiting column has a convex cross section. The spring is sleeved on the limiting column. The tube sleeve is provided with a mounting hole. The mounting hole has a convex cross section. The limiting column is slidably installed in the mounting hole. The spring is located between the limiting column and the tube sleeve. One end of the limiting column is located outside the tube sleeve and is fixedly connected to the handle. The other end of the limiting column extends into hole II. The load-bearing seat is fixedly installed on the outer tube. The tube sleeve is embedded in the accommodating hole through the outer tube and the connecting piece, and the limiting column is embedded in the connecting hole and movably installed on the telescopic component. The supporting component is provided with a connecting portion, which is embedded in the inner tube and connected by a latch.

[0005] The telescopic parts, load-bearing parts and supporting parts of the above-mentioned combined jack are connected in a detachable manner, so as to obtain the use effect of the final equipment in a combined assembly manner. Therefore, before the equipment enters the terminal retail link or is used as an assembly part of the main engine factory, it can be in a disassembled state, that is, the telescopic parts, load-bearing parts or supporting parts are uniformly packaged and stored. The telescopic parts, load-bearing parts and supporting parts are all compact structures, and their respective volumes are not much different from the space occupied by their packaging and storage. Therefore, after the telescopic parts are packaged and stored as a type of disposal object, the space utilization rate is very high. Similarly, after the load-bearing parts are packaged and stored as a type of disposal object, the space utilization rate is very high, and after the support parts are packaged and stored as a type of disposal object, the space utilization rate is very high. The space utilization rate of the jack packaged and stored in the disassembled state is greater than the space utilization rate of the jack packaged and stored in the assembled state. Therefore, the technical solution reduces the space occupied by the storage package of the jack in the non-working state by providing the jack with a disassembly and assembly structure.

[0006] In addition to the technical effects in the above space, this technical solution can also achieve technical effects in maintenance. As described in the above technical solution, the load-bearing components and support components are detachably mounted on the telescopic components. When any component is damaged, the corresponding component is disassembled and separated from other components for repair or replacement with another normal component. When any component needs maintenance or modification and upgrading, the corresponding component is disassembled and separated from other components, and the operation is performed without interference from other components. In general, the operation in maintenance becomes convenient and simple. In addition, it is worth mentioning that the above structural innovation can reduce the user's use cost and expand the market share of the equipment. Specifically, the advantage of any component being disassembled and replaced allows users to regain a normal jack by only replacing a part of the component, avoiding the situation where the entire jack is scrapped due to damage to the component. Thanks to this, the service life of the jack can be extended through partial updates, and the individual components sold as separate products during this period increase market sales; multiple sets of components are compatible based on the same assembly structure, and users will choose such equipment based on long-term considerations, cost considerations, and general compatibility considerations. Compared with only one device in the configuration of a trailer RV, the former method is more beneficial to users. The compatibility of components makes them interchangeable. When a component of one jack needs to be replaced, the component on another idle or low-load jack can be removed for interchange. This not only greatly reduces the user's use cost and increases the service life, but also helps to occupy the market share.

[0007] The structural design of the combined jack takes into account the structural design of the existing jacks, so as to facilitate the implementation of the technical solution based on the existing production conditions. In particular, the design of the connector provides a connection structure for the pipe sleeve on the one hand, and is also intended to increase the structural strength of the outer tube on the other hand, in order to make the outer tube suitable for the connection method in which it is assembled with the pipe sleeve, because the connection strength between the pipe sleeve and the outer tube after they are assembled together must be weaker than the connection strength obtained after the two are connected together by welding. In this connection method, the force structure of the outer tube is random, and only by improving the structural strength of the outer tube can this force characteristic be dealt with. The connector provides a connection hole to avoid obtaining the connection hole through the outer tube. If the connection hole is obtained through the outer tube, the structural strength of the outer tube will inevitably be reduced.

[0008] In order to improve the smoothness of the sliding movement of the limit column in the installation hole, a guide column is provided on the pipe sleeve, the installation hole is located in the guide column, the center line of the installation hole coincides with the center line of the guide column, and a guide sleeve is provided on the handle, the guide column extends into the guide sleeve, and the guide sleeve is slidably connected to the guide column. As a result, the weight of the limit column and the weight of the handle are jointly borne by the internal part of the pipe sleeve and the external part of the pipe sleeve on the guide column, and the weight of the limit column and the handle is distributed on the pipe sleeve in a multi-point manner. Compared with the situation where the weight of the limit column and the weight of the handle are borne by the internal part of the pipe sleeve, it is obvious that the friction between the limit column and the pipe sleeve is smaller in the former situation. The smaller the friction between the limit column and the pipe sleeve, the more conducive it is for the limit column to slide smoothly in the installation hole.

[0009] In order to prevent granular dirt from entering between the guide sleeve and the guide column, a retaining ring is provided on the pipe sleeve and the guide sleeve is located inside the retaining ring.

[0010] As a preferred embodiment of the supporting component, the supporting component includes a universal wheel, the connecting portion is located at the connecting end of the universal wheel, the connecting portion is a tubular structure, the inner tube is embedded in the connecting portion, and the latch passes through the inner tube and the connecting portion.

[0011] As another preferred embodiment of the support component, the support component includes a support plate, the connection part is located in the middle of the support plate, the connection part is a columnar structure, the connection part is provided with an annular movable groove, the connection part extends into the inner tube, the latch is embedded in the movable groove, and the latch deviates from the center line of the inner tube. The specific design of the movable operation and the latch position is intended to enable the support plate to rotate after assembly.

[0012] The preferred embodiment of the load-bearing seat may be that the top of the load-bearing seat is provided with a wavy loading surface corresponding to the loading operation; or the load-bearing seat is provided with a turntable, and the rotation direction of the turntable is located in the vertical plane; or the load-bearing seat is provided with an assembly hole, and the center line of the assembly hole is perpendicular to the center line of the outer tube; or the outline of the load-bearing seat is triangular, and the center line of the load-bearing seat coincides with the center line of hole I.

[0013] The utility model adopts the above technical solution: the combined jack is connected together in an assembly manner through a telescopic component, a load-bearing component, and a supporting component. Since the telescopic component, the load-bearing component, and the supporting component are all compact structures, the space utilization rate of the jack when packaged and stored in a disassembled state is greater than the space utilization rate of the jack when packaged and stored in an assembled state. Therefore, the technical solution reduces the space occupied by the storage package of the jack in a non-working state by providing the jack with a disassembly and assembly structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0015] Figure 1 This is a schematic diagram of the structure of the first embodiment of the utility model;

[0016] Figure 2 for Figure 1 A partial enlarged view of

[0017] Figure 3 The structure of the telescopic component of the first embodiment of the utility model is schematically shown in FIG. Figure Ⅰ ;

[0018] Figure 4 The structure of the telescopic component of the first embodiment of the utility model is schematically shown in FIG. Figure II ;

[0019] Figure 5 This is a schematic structural diagram of a load-bearing component of the first embodiment of the utility model;

[0020] Figure 6 This is a schematic structural diagram of a second embodiment of the utility model;

[0021] Figure 7 for Figure 6 A partial enlarged view of

[0022] Figure 8 This is a schematic structural diagram of a support component of a second embodiment of the utility model;

[0023] Fig. 9 This is a schematic structural diagram of a load-bearing component of a third embodiment of the utility model;

[0024] Fig.10 This is a schematic structural diagram of a load-bearing component of a fourth embodiment of the utility model;

[0025] Fig.11 It is a schematic structural diagram of a load-bearing component of a fifth embodiment of the utility model. DETAILED DESCRIPTION

[0026] The first embodiment of the utility model, as Figure 1 , 2 , 3, 4, 5, 6, and 7 as shown.

[0027] The combined jack comprises a telescopic component 1, a load-bearing component 2 and a supporting component 3. The load-bearing component 2 and the supporting component 3 are both movably mounted on the telescopic component 1 in a detachable manner.

[0028] The telescopic component 1 is provided with a connector 10, an outer tube 4 and an inner tube 5. The inner tube 5 is located inside the outer tube 4 and is movably connected to the outer tube 4 along the center line of the outer tube 4. The center line of the outer tube 4 coincides with the center line of the inner tube 5. The inner tube 5 can move along the direction of the center line of the outer tube 4, and thus the entire telescopic component 1 obtains a telescopic effect. The connector 10 is fixed to the outside of the outer tube 4 by welding. The connector 10 protrudes from the surface of the outer tube 4 and extends in a direction parallel to the center line of the outer tube 4. The connector 10 is provided with a connecting hole 11. The connecting hole 11 is only located inside the connector 10. One end of the connecting hole 11 is not connected to the internal space of the outer tube 4, and the other end of the connecting hole 11 is connected to the external hole space of the pipe sleeve 6. The center line of the connecting hole 11 is perpendicular to the center line of the outer tube 4.

[0029] The load-bearing component 2 is provided with a pipe sleeve 6, a load-bearing seat 8, and a clamping member. A through-type receiving hole 9 is provided inside the pipe sleeve 6. The receiving hole 9 is divided into two parts, one part is a hole I12 for receiving the outer tube 4, and the other part is a hole II13 for receiving the connecting member 10. The hole I12 is directly connected with the hole II13. During installation, the pipe sleeve 6 is sleeved on the outside of the outer tube 4, the outer tube 4 passes through the hole I12, and the connecting member 10 passes through the hole II13. The center line of the hole I12 is parallel to the center line of the outer tube 4. Since the contour shape of the cross section of the receiving hole 9 is the same as the contour shape of the cross section of the outer tube 4 where the connecting member 10 is installed, the pipe sleeve 6 cannot rotate relative to the outer tube 4 in the circumferential direction around the center line of the outer tube 4.

[0030] A guide column 17 and a retaining ring 18 are provided on the pipe sleeve 6 .

[0031] The guide column 17 is perpendicular to the center line of the hole I 12. The pipe sleeve 6 is provided with a mounting hole 7. The mounting hole 7 is located inside the guide column 17, one end of which is directly connected to the hole II 13, and the other end of the mounting hole 7 is connected to the external space of the pipe sleeve 6. The center line of the mounting hole 7 coincides with the center line of the guide column 17. The cross section of the mounting hole 7 is convex, and the pipe sleeve 6 forms a step surface at the mounting hole 7. The retaining ring 18 surrounds the guide column 17, and the guide column 17 is located in the middle of the retaining ring 18. The center line of the retaining ring 18 coincides with the center line of the guide column 17, and the length of the retaining ring 18 is less than the length of the guide column 17.

[0032] The clamping member includes a limit column 14, a spring 15, and a handle 16. The cross section of the limit column 14 is convex, and it includes two cylindrical parts with different radii, and a step surface is formed between the two cylindrical parts. The spring 15 is sleeved on the limit column 14, and the limit column 14 is installed in the mounting hole 7 in a sliding manner, that is, the limit column 14 can slide in the mounting hole 7, one end of the spring 15 is supported by the step surface on the limit column 14, and the other end of the spring 15 is supported by the step surface in the pipe sleeve 6, so that the spring 15 is located between the limit column 14 and the pipe sleeve 6, and the spring 15 is always in a compressed state. One end of the limit column 14 passes through the mounting hole 7 and is located outside the pipe sleeve 6, and the other end of the limit column 14 extends into the hole II 13. The end of the limit column 14 located outside the pipe sleeve 6 is fixedly connected to the handle 16. A guide sleeve 25 is provided on the handle 16. The guide sleeve 25 is distributed around the limit column 14, and the center line of the guide sleeve 25 coincides with the center line of the limit column 14. After installation, one end of the guide column 17 is embedded in the guide sleeve 25, and the guide sleeve 25 is slidably connected to the guide column 17; the guide sleeve 25 is also located inside the retaining ring 18.

[0033] The load-carrying seat 8 is fixedly mounted on the outer tube 4. The top of the load-carrying seat 8 is provided with a wavy loading surface 21 corresponding to the loading operation. When in use, the loading surface 21 directly supports the trailer caravan. The load-carrying seat 8 is located on one side of the outer tube 4, and the handle 16 is located on the other side of the outer tube 4. During installation, the limit column 14 is embedded in the connecting hole 11, so that the outer tube 4 and the connecting piece 10 are embedded in the receiving hole 9 and the limit column 14 is embedded in the connecting hole 11. After installation, the center line of the guide column 17 is perpendicular to the center line of the outer tube 4, and the center line of the limit column 14 is also perpendicular to the center line of the outer tube 4. In this way, the pipe sleeve 6 cannot rotate relative to the outer tube 4 in the circumferential direction around the center line of the outer tube 4, and cannot translate relative to the outer tube 4 in the direction parallel to the center line of the outer tube 4. Thus, the load-carrying component 2 is assembled with the telescopic component 1.

[0034] The supporting component 3 is a universal wheel, and a connecting plate is provided on the universal wheel, and the connecting plate serves as a connecting end of the universal wheel. A connecting portion 19 of a tubular structure is provided on the connecting plate of the universal wheel. The inner tube 5 is embedded in the connecting portion 19, and the latch 24 passes through the inner tube 5 and the connecting portion 19, so that the connecting portion 19 is connected to the inner tube 5. When in use, the supporting component 3 directly touches the ground.

[0035] When disassembling the assembled jack, unplug the latch 24, then remove the support component 3 from the inner tube 5, so that the support component 3 is separated from the telescopic component 1; then, pull the handle 16 to separate the limit column 14 from the connection hole 11, and then pull the load-bearing component 2 to move in the direction of separating from the telescopic component 1 until the load-bearing component 2 is separated from the telescopic component 1. In this way, the assembled jack is disassembled into three independent components.

[0036] like Figure 8As shown, the second embodiment of the utility model is different from the first embodiment in that the support component 3 is a support plate of a rectangular plate structure, the connection part 19 is located in the middle of the support plate, the connection part 19 is a cylindrical structure, and the connection part 19 is provided with an annular movable groove 20 around its center line. The connection part 19 extends into the inner tube 5, and the latch 24 is embedded in the movable groove 20, and the latch 24 deviates from the center line of the inner tube 5; after installation, the support component 19 can rotate around the center line of the inner tube 5.

[0037] like Fig. 9 As shown, the third embodiment of the utility model is different from the first embodiment in that a turntable 22 is provided on the load-carrying seat 8, and the rotation direction of the turntable 22 is located in the vertical plane. When in use, the turntable 22 is fixedly connected to the trailer caravan by bolts.

[0038] like Fig.10 As shown, the fourth embodiment of the utility model is different from the first embodiment in that a mounting hole 23 is provided on the load-carrying seat 8, and the center line of the mounting hole 23 is perpendicular to the center line of the outer tube. When in use, the mounting hole 23 is docked with the raised part on the trailer caravan, that is, the raised part is embedded in the mounting hole.

[0039] like Fig.11 As shown, the fifth embodiment of the utility model is different from the first embodiment in that the outline of the load-carrying seat 8 is triangular, and the center line of the load-carrying seat 8 coincides with the center line of the hole 112. When in use, the load-carrying seat is fixedly connected to the trailer caravan by bolts.

[0040] The sixth embodiment of the utility model is different from the second embodiment in that a turntable is provided on the load-carrying seat, and the rotation direction of the turntable is located in the vertical plane. When in use, the turntable is fixedly connected to the trailer caravan by bolts.

[0041] The seventh embodiment of the utility model is different from the second embodiment in that a mounting hole is provided on the load-carrying seat, and the center line of the mounting hole is perpendicular to the center line of the outer tube. When in use, the mounting hole is butted against the raised part on the trailer caravan, that is, the raised part is embedded in the mounting hole.

[0042] The eighth embodiment of the utility model is different from the second embodiment in that the load-carrying seat has a triangular outline, and the center line of the load-carrying seat coincides with the center line of the hole I. When in use, the load-carrying seat is fixedly connected to the trailer caravan by bolts.

Claims

1. A combined jack, comprising a telescopic component (1), a load-bearing component (2), and a supporting component (3), wherein the telescopic component (1) is provided with an outer tube (4) and an inner tube (5), wherein the inner tube (5) is located inside the outer tube (4) and the inner tube (5) is movably connected to the outer tube (4) along the center line of the outer tube (4), and characterized in that: The load-bearing component (2) and the supporting component (3) are both movably mounted on the telescopic component (1) in a detachable manner; the load-bearing component (2) is provided with a pipe sleeve (6), a load-bearing seat (8), and a clamping member; a through-type receiving hole (9) is provided inside the pipe sleeve (6); the telescopic component (1) is also provided with a connecting member (10); the connecting member (10) is mounted outside the outer tube (4); the connecting member (10) extends in a direction parallel to the center line of the outer tube (4); the connecting member The receiving hole (9) comprises a hole I (12) for receiving the outer tube (4) and a hole II (13) for receiving the connecting piece (10), the hole I (12) is connected to the hole II (13), the center line of the hole I (12) is parallel to the center line of the outer tube (4), the cross-sectional profile of the receiving hole (9) is the same as the cross-sectional profile of the outer tube (4) at the location where the connecting piece (10) is installed, and the clamping piece comprises a limiting column (14), a spring The limiting column (14) has a convex cross-section, the spring (15) is sleeved on the limiting column (14), the pipe sleeve (6) is provided with a mounting hole (7), the cross-section of the mounting hole (7) is convex, the limiting column (14) is mounted in the mounting hole (7) in a sliding manner, the spring (15) is located between the limiting column (14) and the pipe sleeve (6), one end of the limiting column (14) is located outside the pipe sleeve (6) and is fixed to the handle (16). The other end of the limiting column (14) extends into the hole II (13), the load-bearing seat (8) is fixedly mounted on the outer tube (4), the pipe sleeve (6) is embedded in the accommodating hole (9) through the outer tube (4) and the connecting piece (10), and the limiting column (14) is embedded in the connecting hole (11) and movably mounted on the telescopic component (1), and the supporting component (3) is provided with a connecting portion (19), and the connecting portion (19) is embedded in the inner tube (5) and connected by a latch (24).

2. The combined jack according to claim 1, characterized in that: The pipe sleeve (6) is provided with a guide column (17), the mounting hole (7) is located in the guide column (17), the center line of the mounting hole (7) coincides with the center line of the guide column (17), the handle (16) is provided with a guide sleeve (25), the guide column (17) extends into the guide sleeve (25), and the guide sleeve (25) is slidably connected to the guide column (17).

3. The combined jack according to claim 2, characterized in that: The pipe sleeve (6) is provided with a retaining ring (18), and the guide sleeve (25) is located inside the retaining ring (18).

4. The combined jack according to claim 1, characterized in that: The supporting component (3) comprises a universal wheel, the connecting portion (19) is located at the connecting end of the universal wheel, the connecting portion (19) is a tubular structure, the inner tube (5) is embedded in the connecting portion (19), and the latch (24) passes through the inner tube (5) and the connecting portion (19).

5. The combined jack according to claim 1, characterized in that: The support component (3) comprises a support plate, the connection portion (19) is located in the middle of the support plate, the connection portion (19) is a columnar structure, the connection portion (19) is provided with an annular movable groove (20), the connection portion (19) extends into the inner tube (5), the latch (24) is embedded in the movable groove (20), and the latch (24) deviates from the center line of the inner tube (5).

6. The combined jack according to claim 1, characterized in that: The top of the load-carrying seat (8) is provided with a wavy loading surface (21) corresponding to the load-carrying operation.

7. The combined jack according to claim 1, characterized in that: A turntable (22) is provided on the load-carrying seat (8), and the rotation direction of the turntable (22) is located in a vertical plane.

8. The combined jack according to claim 1, characterized in that: The load-carrying seat (8) is provided with an assembly hole (23), and the center line of the assembly hole (23) is perpendicular to the center line of the outer tube (4).

9. The combined jack according to claim 1, characterized in that: The outline of the load-carrying seat (8) is triangular, and the center line of the load-carrying seat (8) coincides with the center line of the hole I (12).

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