Manual hydraulic expander

Abstract

The utility model discloses a manual hydraulic expander, and belongs to the technical field of rescue equipment. The device mainly comprises a hydraulic cylinder body, a linkage assembly, a connecting seat and an end head, wherein a telescopic rod is arranged at one end of the hydraulic cylinder body; the linkage assembly comprises a linkage seat, hinge lugs and connecting plates, the linkage seat is fixed to one end of the telescopic rod, the hinge lugs fixed to the side wall of the hydraulic cylinder body are arranged on the two sides of the telescopic rod, and each hinge lug is provided with a set of connecting plates; one end of the connecting seat is movably connected with the linkage seat, and the other end is movably connected with the connecting plate; and the end head is connected with the connecting seat. According to the hydraulic expander, the connecting base with the locking assembly is matched with the detachable end, so that different ends of the hydraulic expander can be rapidly replaced according to different rescue tasks or rescue sites, the using effect of the hydraulic expander is improved, and the applicability of the hydraulic expander is improved. The hydraulic expander is mainly used for optimizing the structure of a traditional hydraulic expander.

Description

Technical Field

[0001] The utility model belongs to the technical field of rescue equipment, and in particular relates to a manual hydraulic expander. Background Art

[0002] Hydraulic spreaders are commonly used in emergency rescue operations. Relying on powerful hydraulic pressure, they can be used to move and lift obstacles, pry open gaps, deform metal, or tear steel plates to create necessary passages for rescue operations. Existing hydraulic spreaders have fixed ends, resulting in limited functionality. This can make them ineffective or even unusable in some special situations. Utility Model Content

[0003] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art and provide a manual hydraulic expander, which cooperates with a detachable end head through a connecting seat with a locking assembly, so that the device can quickly replace different end heads according to different rescue tasks or rescue sites, which not only improves the use effect of the hydraulic expander, but also improves the applicability of the equipment.

[0004] The described manual hydraulic expander includes a hydraulic cylinder body, a linkage assembly, a connecting seat, and an end head, wherein one end of the hydraulic cylinder body is provided with a telescopic rod adapted to the hydraulic cylinder body; the linkage assembly includes a linkage seat, a hinged ear, and a connecting plate, the linkage seat is fixed to one end of the telescopic rod away from the hydraulic cylinder body, and both sides of the telescopic rod are provided with hinged ears fixed to the side wall of the hydraulic cylinder body, and a group of connecting plates are installed on each hinged ear; the connecting seat is installed at one end of the hydraulic cylinder body in a relative manner, and one end of the connecting seat is movably connected to the linkage seat, and the other end is movably connected to the connecting plate; wherein, a plurality of locking assemblies connected to the side wall of the connecting seat are provided in the connecting seat; the number of the end heads is adapted to the number of the connecting seats, and the end heads are connected to the connecting seat in a detachable manner, and the end heads are embedded in the connecting seat part and adapted to be connected with the locking assembly; wherein, the end heads are arranged in an opposite manner.

[0005] Preferably, one end of the connecting seat is provided with a first embedding groove extending toward the interior of the connecting seat, and a plurality of symmetrical second embedding grooves are provided at the bottom of the first embedding groove.

[0006] Preferably, a plurality of gear grooves are provided between the second embedding grooves, wherein a plurality of parallel sliding grooves are provided on the side walls of the gear grooves, and the sliding grooves are connected with the gear grooves, the second embedding grooves and the outer side walls of the connecting seat.

[0007] Preferably, the locking assembly includes a gear and a rack, the gear is embedded in the gear groove, and a groove is provided at one end of the gear; the rack is embedded in the sliding groove by the outer side wall of the connecting seat and is meshed with the gear.

[0008] Preferably, the racks arranged on both sides of the gear follow the gear movement in a counter-directional manner, moving back and forth in the second embedding groove opposite thereto.

[0009] Preferably, one end of the end head is provided with an independent structure of various specifications, the other end is provided with a boss adapted to the first embedding groove, and the side of the boss facing the connecting seat is provided with multiple plug rods adapted to the second embedding groove.

[0010] Preferably, a plurality of locking grooves adapted to the racks are provided on the side opposite to the plurality of insertion rods.

[0011] Preferably, the end head includes a ladder-type expansion end head, a bevel-type expansion end head, an external shear-type expansion end head, and a shear end head, and the above end heads are all connected to the connecting seat in a facing manner.

[0012] Preferably, a locking handwheel adapted to the gear is installed on one side of the hydraulic cylinder body.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. By combining a connecting base with a locking assembly with a detachable end head, the device can quickly replace different ends according to different rescue missions or rescue sites, which not only improves the use effect of the hydraulic expander, but also improves the applicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the main view of the utility model;

[0016] Figure 2 It is a rear view of the utility model;

[0017] Figure 3 This is the front view of the connecting seat of the utility model;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the connecting seat of the present invention;

[0019] Figure 5 This is a schematic structural diagram of the locking assembly of the present utility model;

[0020] Figure 6 This is a schematic diagram of the connection between the locking assembly and the end head of the utility model;

[0021] Figure 7 This is the front view of the gear structure of the present utility model;

[0022] Figure 8 This is a schematic diagram of the locking handwheel structure of the utility model;

[0023] Figure 9 This is a schematic diagram of the assembly of the ladder-type expansion end of the utility model;

[0024] Figure 10 This is a schematic structural diagram of the ladder-type expansion end of the present invention;

[0025] Figure 11 This is a schematic diagram of the assembly of the bevel-type expansion end of the utility model;

[0026] Figure 12 This is a schematic diagram of the structure of the inclined expansion end of the utility model;

[0027] Figure 13 This is a schematic diagram of the assembly of the external shear-type expansion end of the utility model;

[0028] Figure 14 This is a schematic diagram of the structure of the external shear-type expansion end head of the utility model;

[0029] Figure 15 This is a schematic diagram of the assembly of the shear end of the utility model;

[0030] Figure 16 This is a schematic diagram of the shear end structure of the present utility model.

[0031] In the figure, 100, hydraulic cylinder; 101, telescopic rod; 110, manual pressure rod assembly; 111, bracket; 112, pressure rod; 113, rotating plate; 114, connecting piece; 115, piston rod; 116, labor-saving rod; 117, support rod; 118, handle; 119, regulating valve; 200, linkage assembly; 201, linkage seat; 202, hinged ear; 203, connecting plate; 300, connecting seat; 301, first embedded groove; 302, second embedded groove ; 303, gear groove; 304, sliding groove; 305, cover plate; 310, locking assembly; 311, gear; 3111, groove; 312, rack; 313, locking handwheel; 314, synapse; 315, strong magnetic block; 400, end; 401, boss; 402, plug rod; 403, locking groove; 410, ladder-type expansion end; 420, bevel-type expansion end; 430, external shear-type expansion end; 431, blade; 440, shear end. DETAILED DESCRIPTION

[0032] The present invention will be further described below with reference to the accompanying drawings:

[0033] The directional terms used in the detailed description are intended solely to facilitate understanding of the technical solutions described herein by those skilled in the art based on the visual orientation shown in the accompanying drawings. Unless otherwise specified or limited, the terms "dispose," "install," and "connect" are to be interpreted broadly, and those skilled in the art will understand their specific meanings in this utility model based on the specific circumstances.

[0034] like Figures 1 to 3 As shown, a manual hydraulic expander includes a hydraulic cylinder body 100, a linkage assembly 200, a connecting seat 300, and an end head 400. One end of the hydraulic cylinder body 100 is provided with a telescopic rod 101 adapted to the hydraulic cylinder body 100; the linkage assembly 200 includes a linkage seat 201, a hinge ear 202, and a connecting plate 203. The linkage seat 201 is fixed to the end of the telescopic rod 101 away from the hydraulic cylinder body 100. Both sides of the telescopic rod 101 are provided with hinge ears 202 fixed to the side walls of the hydraulic cylinder body 100, and each hinge ear 202 is installed with a set of connecting Plate 203; the connecting seat 300 is installed at one end of the hydraulic cylinder body 100 in a relative manner, and one end of the connecting seat 300 is movably connected to the linkage seat 201, and the other end is movably connected to the connecting plate 203; wherein, a plurality of locking assemblies 310 connected to the side wall of the connecting seat 300 are provided in the connecting seat 300; the number of the end heads 400 is adapted to the number of the connecting seat 300, and is connected to the connecting seat 300 in a detachable manner, and the end heads 400 are embedded in the connecting seat 300 and are adapted to be connected to the locking assemblies 310; wherein, the end heads 400 are arranged in a facing manner.

[0035] Optionally, a manual pressure rod assembly 110 is provided on the side wall of the hydraulic cylinder body 100, which is composed of a bracket 111, a pressure rod 112, a rotating plate 113, a connecting piece 114, and a piston rod 115. The brackets 111 are provided in plurality and fixed in parallel to the outer wall of the hydraulic cylinder body 100; the pressure rod 112 is installed between the brackets 111 and is rotatably connected to the brackets 111; a parallel and fixed rotating plate 113 is installed on the side of the pressure rod 112 facing the hydraulic cylinder body 100; one end of the piston rod 115 is embedded in the hydraulic cylinder body 100, and the other end is installed with a connecting piece 114, and the end of the connecting piece 114 facing away from the piston rod 115 is movably connected to the rotating plate 113. In this way, when the pressure rod 112 rotates with the bracket 111 as the axis, it can cooperate with the connecting piece 114 to drive the piston rod 115 to move back and forth synchronously. The hydraulic cylinder body 100 can obtain pressure or unload pressure through the movement of the piston rod 115, so that the telescopic rod 101 installed at one end of the hydraulic cylinder body 100 can be extended or retracted.

[0036] Optionally, a detachable labor-saving rod 116 is installed at one end of the pressure rod 112 away from the bracket 111. In this way, after the labor-saving rod 116 is connected to the pressure rod 112, a labor-saving lever structure can be formed between the manual pressure rod assembly 110, so that rescuers can operate the device in a time-saving and labor-saving manner, thereby effectively improving the working efficiency of the device and saving the physical energy of the rescuers.

[0037] Optionally, a detachable support rod 117 is installed at one end of the hydraulic cylinder body 100 away from the telescopic rod 101. In this way, the installed support rod 117 can provide a force point or support point for rescuers when using the equipment, thereby improving the working efficiency of the equipment and saving the physical energy of rescuers.

[0038] Optionally, a handle 118 is mounted on the outer wall of the hydraulic cylinder 100, adjacent to the manual pressure rod assembly 110. This allows rescuers to quickly transport the equipment using the handle 118. Furthermore, the handle 118 is located at the end of the hydraulic cylinder 100 near the telescopic rod 101, ensuring that the handle 118 is positioned at the balance point of the overall weight of the equipment. This prevents the equipment from weighing too much when being carried or used by rescuers.

[0039] Optionally, a rotatable regulating valve 119 is mounted on the outer wall of the hydraulic cylinder 100. This regulating valve allows the hydraulic pressure within the hydraulic cylinder 100 to be adjusted. For example, by rotating the regulating valve clockwise and continuously pressing the manual lever assembly 110, the telescopic rod 101 can be extended from the hydraulic cylinder 100. Conversely, by rotating the regulating valve 119 counterclockwise and continuously pressing the manual lever assembly 110, the telescopic rod 101 can be retracted into the hydraulic cylinder 100.

[0040] like Figures 4 to 7 As shown, one end of the connection base 300 is provided with a first embedding groove 301 extending toward the interior of the connection base 300, and the bottom of the first embedding groove 301 is provided with a plurality of symmetrical second embedding grooves 302. Thus, through the cooperation of the first embedding grooves 301 and the second embedding grooves 302, a two-stage fixed structure is formed inside the connection base 300, making it difficult for the terminal 400 to be displaced or separated from the connection base 300 under the action of external forces, thereby improving the connection stability between the terminal 400 and the connection base 300.

[0041] like Figure 4 As shown, a plurality of gear slots 303 are provided between the second embedding slots 302, wherein the side walls of the gear slots 303 are provided with a plurality of parallel sliding slots 304, and the sliding slots 304 are connected to the gear slots 303, the second embedding slots 302, and the outer wall of the connecting base 300. In this way, the mutual coordination between the gear slots 303, the sliding slots 304, and the second embedding slots 302 facilitates the assembly and maintenance of the locking assembly 310 on the one hand, and enables the locking assembly 310 to lock the portion of the end piece 400 embedded in the second embedding slot 302 after assembly, thereby achieving the purpose of fixing the end piece 400.

[0042] Optionally, a cover plate 305 engaged with the outer wall of the connecting base 300 is provided on the side of the gear groove 303 facing the outer wall of the connecting base 300 .

[0043] like Figures 5 to 7 As shown, the locking assembly 310 includes a gear 311 and a rack 312. The gear 311 is embedded in the gear slot 303, and one end of the gear 311 is provided with a groove 3111. The rack 312 is embedded in the sliding slot 304 from the outer wall of the connecting base 300 and meshes with the gear 311. As the gear 311 rotates, the rack 312 can follow the gear 311 and move along the sliding slot 304, thereby locking or releasing the endpiece 400, allowing the endpiece 400 to be quickly replaced or fixed. Furthermore, the groove 3111 at the end of the gear 311 allows the gear 311 to be rotated with the aid of a tool. Without the use of tools, the gear 311 and rack 312 are unlikely to rotate on their own, thereby improving the stability of the connection between the endpiece 400 and the connecting base 300.

[0044] like Figures 5 to 7 As shown, the racks 312 disposed on either side of the gear 311 move in opposite directions, following the gear 311 and moving back and forth between the opposite second recesses 302. Thus, when the gear 311 rotates clockwise, the racks 312 follow the rotation of the gear 311 and move toward the second recesses 302. At this point, if the terminal 400 is embedded in the second recesses 302, the racks 312 will engage with the portion of the terminal 400 embedded in the second recesses 302. Conversely, when the gear 311 rotates counterclockwise, the racks 312 follow the rotation of the gear 311 and move away from the second recesses 302 until the racks 312 are completely free of the second recesses 302 and flush with the gear groove 303. This unlocks the terminal 400, allowing it to be separated from the connector 300.

[0045] like Figures 9 to 16 As shown, one end of the terminal 400 is provided with independent structures of various specifications, and the other end is provided with a boss 401 adapted to fit into the first embedding groove 301. Furthermore, the side of the boss 401 facing the connecting base 300 is provided with multiple insertion rods 402 adapted to fit into the second embedding grooves 302. Thus, by the boss 401 mating with the first embedding groove 301 and the insertion rods 402 mating with the second embedding grooves 302, a two-stage fixed structure is formed between the terminal 400 and the connecting base 300, effectively improving the connection strength between the terminal 400 and the connecting base 300.

[0046] like Figures 9 to 16 As shown, a plurality of locking grooves 403 are provided on the side opposite the plurality of insertion rods 402, adapted to mate with the rack 312. Driven by the gear 311, the rack 312 can engage or disengage with the locking grooves 403, thereby locking or releasing the terminal 400. This improves the connection strength between the terminal 400 and the connector 300.

[0047] like Figures 9 to 16 As shown, the end head 400 includes a ladder-type expansion end head 410, a bevel-type expansion end head 420, an external shear-type expansion end head 430, and a shear end head 440. The above end heads 400 are all connected to the connecting seat 300 in a facing manner. In this way, through the end heads 400 of different specifications, rescuers can choose a more suitable end head 400 according to different rescue scenes, so as to improve the rescue efficiency and buy more time for the rescue. For example, the ladder-type expansion end head 410 is suitable for conventional rescue scenes where there is enough space for the end head 400 to be embedded. The bevel-type expansion end head 420 is suitable for rescue scenes where the space is small and the ladder-type expansion end head 410 cannot be embedded or the force point cannot be found. When facing a narrow gap, the bevel-type expansion end head 420 can be easily inserted into the gap, and the insertion position of the bevel-type end head 400 can be continuously adjusted while expanding to widen the gap. The external shear expansion tip 430, with its outer sidewall provided with a blade 431, is suitable for rescue scenarios where a gap cannot be widened but can be cut horizontally, thus providing rescuers with an alternative direction for demolition. The shear tip 440, with its inner sidewall provided with a blade 431, can quickly shear objects, allowing rescuers to quickly pass through obstacles.

[0048] like Figure 2 and Figure 8 As shown, a locking hand wheel 313 adapted to the gear 311 is installed on one side of the regulating valve 119. In this way, the locking hand wheel 313 is installed at the position of the regulating valve 119, which can ensure that rescuers can access it at any time and operate the locking assembly 310, thereby improving the efficiency of replacing the end head 400.

[0049] like Figure 8 As shown, one side of the locking hand wheel 313 is provided with a synapse 314 adapted to the groove 3111 of the gear 311. In this way, the locking hand wheel 313 can be engaged with the groove 3111 on one side of the gear 311 through the provided synapse 314, thereby achieving the purpose of adjusting the rotation of the gear 311.

[0050] like Figure 8 As shown, a plurality of strong magnetic blocks 315 are embedded on one side of the locking handwheel 313. This allows the locking handwheel 313 to be magnetically attracted to the placement position by the strong magnetic blocks 315, making it difficult for it to be dislodged from the placement position under external forces. This improves the stability of the locking handwheel 313's connection to the placement position.

[0051] Finally, although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A manual hydraulic expander, comprising a hydraulic cylinder (100), a linkage assembly (200), a connecting seat (300), and an end head (400), characterized in that: One end of the hydraulic cylinder body (100) is provided with a telescopic rod (101) adapted to the hydraulic cylinder body (100); the linkage assembly (200) comprises a linkage seat (201), a hinged ear (202), and a connecting plate (203); the linkage seat (201) is fixed to one end of the telescopic rod (101) away from the hydraulic cylinder body (100); both sides of the telescopic rod (101) are provided with hinged ears (202) fixed to the side walls of the hydraulic cylinder body (100), and each hinged ear (202) is installed with a set of connecting plates (203); the connecting seat (300) is installed in a relative manner At one end of the hydraulic cylinder body (100), one end of the connecting seat (300) is movably connected to the linkage seat (201), and the other end is movably connected to the connecting plate (203); wherein, a plurality of locking assemblies (310) connected to the side wall of the connecting seat (300) are provided in the connecting seat (300); the number of the end heads (400) is adapted to the number of the connecting seat (300), and the end heads (400) are connected to the connecting seat (300) in a detachable manner, and the end heads (400) are embedded in the connecting seat (300) and are adapted to be connected to the locking assemblies (310); wherein, the end heads (400) are arranged in a facing manner.

2. A manual hydraulic expander according to claim 1, characterized in that: One end of the connecting seat (300) is provided with a first embedding groove (301) extending toward the interior of the connecting seat (300), and a plurality of symmetrical second embedding grooves (302) are provided at the bottom of the first embedding groove (301).

3. A manual hydraulic expander according to claim 2, characterized in that: A plurality of gear grooves (303) are provided between the second embedding grooves (302), wherein a plurality of parallel sliding grooves (304) are provided on the side walls of the gear grooves (303), and the sliding grooves (304) are in communication with the gear grooves (303), the second embedding grooves (302), and the outer side walls of the connecting seat (300).

4. A manual hydraulic expander according to claim 1, characterized in that: The locking assembly (310) includes a gear (311) and a rack (312), wherein the gear (311) is embedded in the gear groove (303), and a groove (3111) is provided at one end of the gear (311); the rack (312) is embedded in the sliding groove (304) from the outer wall of the connecting seat (300) and is meshed with the gear (311).

5. A manual hydraulic expander according to claim 4, characterized in that: The racks (312) arranged on both sides of the gear (311) move in opposite directions following the gear (311) and moving back and forth in the second embedding groove (302) opposite thereto.

6. The manual hydraulic expander according to claim 1, characterized in that: One end of the end head (400) is provided with an independent structure of various specifications, and the other end is provided with a boss (401) adapted to the first embedding groove (301), and a plurality of insertion rods (402) adapted to the second embedding groove (302) are provided on the side of the boss (401) facing the connecting seat (300).

7. A manual hydraulic expander according to claim 6, characterized in that: A plurality of locking grooves (403) adapted to the racks (312) are provided on a side opposite to the plurality of insertion rods (402).

8. A manual hydraulic expander according to any one of claims 1 to 7, characterized in that: The end heads (400) include a ladder-type expansion end head (410), a slope-type expansion end head (420), an external shear-type expansion end head (430), and a shear end head (440), and the above end heads (400) are all connected to the connection seat (300) in a relative structure.

9. A manual hydraulic expander according to any one of claims 1 to 7, characterized in that: A locking hand wheel (313) adapted to the gear (311) is installed on one side of the hydraulic cylinder body (100).

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