Movable manually-adjusted small jacking mechanism

Abstract

A small movable manually-adjusted jacking mechanism comprises a bottom plate, a fixing seat is arranged on the lower surface of the bottom plate, trundles are arranged on the lower side of the fixing seat, a bottom support is in threaded connection with the interior of the fixing seat, the lower end of the bottom support downwards extends out of the fixing seat, and a rotary knob is connected to the bottom support; a supporting column is vertically arranged on the upper surface of the bottom plate, guide rails are arranged on the two sides of the supporting column respectively, sliding blocks of the guide rails are connected with side plates respectively, a lifting seat is connected between the two side plates, a fixing plate is arranged on the side face of the lifting seat, the two ends of the fixing plate are connected with adjusting seats through bolts and nuts respectively, and nylon ejector blocks are fixedly arranged on the adjusting seats. The lifting device is simple in structure, light in weight, adjustable in lifting and lowering, high in adjusting precision, easy to operate, capable of being manually adjusted without saving electricity, suitable for playing a role in local jacking during installation and debugging in a small space, and capable of being used during installation and debugging in various scenes.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to a jacking tool, and especially to a movable manually adjustable small jacking mechanism. Background Art

[0002] A jacking mechanism is a mechanism for realizing the rising action of an object. In the prior art, the jacking mechanism includes an electric lifting mechanism and a jack. The electric lifting mechanism has a large external dimension and is heavy, and it is not applicable to small spaces and also requires power connection, and the actual on-site environment may not be able to meet the requirements; while the jack can only raise the height, and when lowering the height, it will release pressure to the bottom and cannot complete millimeter-level adjustment. Summary of the Invention

[0003] The purpose of the utility model is to provide a movable manually adjustable small jacking mechanism, and the movable manually adjustable small jacking mechanism is to solve the technical problems in the prior art that the electric lifting mechanism has a large external dimension and is heavy, is not applicable to small spaces, the on-site environment may not be able to meet the requirements, and the jack cannot complete millimeter-level adjustment when lowering the height.

[0004] A movable manually adjustable small jacking mechanism of the utility model includes a bottom plate. A fixed seat is arranged on the lower surface of the bottom plate. Casters are arranged on the lower side of the fixed seat. A bottom support is threadedly connected in the fixed seat. The lower end of the bottom support extends downward out of the fixed seat. The bottom support is connected with a knob. A support column is vertically arranged on the upper surface of the bottom plate. Guide rails are respectively arranged on both sides of the support column. The guide rails are parallel to the height direction of the support column. Sliders are respectively arranged on the two guide rails. Side plates are respectively connected to the two sliders. A lifting seat is connected between the two side plates. A fixing plate is arranged on the side surface of the lifting seat. Both ends of the fixing plate are respectively connected with adjusting seats through bolts and nuts. A nylon top block is fixedly arranged on the adjusting seat. Upper support seats and lower support seats are respectively arranged on the upper and lower sides of the side surface of the support column. The lower support seat is connected with the bottom plate at the lower side. A trapezoidal lead screw is connected between the upper support seat and the lower support seat. A nut seat is threadedly connected to the trapezoidal lead screw. The nut seat is fixedly connected with the lifting seat. The upper end of the trapezoidal lead screw is connected with a driving handwheel.

[0005] Further, an angular contact bearing is arranged between the lower support seat and the trapezoidal lead screw, and a shaft retaining snap ring is arranged between the angular contact bearing and the trapezoidal lead screw.

[0006] Further, a deep groove ball bearing is arranged between the upper support seat and the trapezoidal lead screw.

[0007] Further, the driving handwheel is connected with the trapezoidal lead screw through a lock nut and a washer.

[0008] Compared with the prior art, the effects of the present utility model are positive and obvious. The jacking mechanism of the present utility model has a simple structure, is lightweight, small in shape, convenient to carry, movable, adjustable in both raising and lowering, has high adjustment accuracy, is easy to operate, and does not require power connection for manual adjustment. It is suitable for local jacking during installation and debugging in small spaces, can be used in various scenarios of installation and debugging, and multiple sets of mechanisms can be used flexibly when needed to meet most installation requirements. Brief Description of the Drawings

[0009] Figure 1 It is a three-dimensional schematic diagram of a movable manual-adjustable small jacking mechanism of the present utility model.

[0010] Figure 2 It is a front view schematic diagram of a movable manual-adjustable small jacking mechanism of the present utility model.

[0011] Figure 3 It is a side view schematic diagram of a movable manual-adjustable small jacking mechanism of the present utility model.

[0012] Figure 4 It is a top view schematic diagram of a movable manual-adjustable small jacking mechanism of the present utility model. Detailed Description of the Preferred Embodiment

[0013] The present utility model will be further described below in conjunction with embodiments, but the present utility model is not limited to these embodiments. Any similar structure and its similar changes of the present utility model should be included in the protection scope of the present utility model. The use of directions such as up, down, front, back, left, and right in the present utility model is only for the convenience of clear description and does not limit the technical solution of the present utility model.

[0014] As Figures 1-4As shown in the figure, a movable and manually adjustable small jacking mechanism of the present utility model includes a bottom plate 12. A fixed seat 24 is provided on the lower surface of the bottom plate 12. Casters 13 are provided on the lower side of the fixed seat 24. A bottom support 23 is threadedly connected in the fixed seat 24. The lower end of the bottom support 23 extends downward out of the fixed seat 24. The bottom support 23 is connected with a knob 22. A support column 5 is vertically arranged on the upper surface of the bottom plate 12. Guide rails 10 are respectively arranged on both sides of the support column 5. The guide rails 10 are parallel to the height direction of the support column 5. Sliders are respectively arranged on the two guide rails 10. Each of the two sliders is connected with a side plate 18. A lifting seat 9 is connected between the two side plates 18. A fixing plate 8 is arranged on the side surface of the lifting seat 9. Both ends of the fixing plate 8 are respectively connected with an adjusting seat 7 through bolts and nuts. A nylon top block 6 is fixedly arranged on the adjusting seat 7. An upper support seat 3 and a lower support seat 11 are respectively arranged on the upper and lower sides of the side surface of the support column 5. The lower side of the lower support seat 11 is connected with the bottom plate 12. A trapezoidal lead screw 4 is connected between the upper support seat 3 and the lower support seat 11. A nut seat 14 is threadedly connected with the trapezoidal lead screw 4. The nut seat 14 is fixedly connected with the lifting seat 9. The upper end of the trapezoidal lead screw 4 is connected with a driving handwheel 1.

[0015] Further, an angular contact bearing 15 is arranged between the lower support seat 11 and the trapezoidal lead screw 4. A shaft retaining ring 16 is arranged between the angular contact bearing and the trapezoidal lead screw 4.

[0016] Further, a deep groove ball bearing 19 is arranged between the upper support seat 3 and the trapezoidal lead screw 4.

[0017] Further, the driving handwheel 1 is connected with the trapezoidal lead screw 4 through a locking nut 2 and a washer 17.

[0018] Specifically, the trapezoidal lead screw 4, nut seat 14, angular contact bearing 15, shaft retaining ring 16, deep groove ball bearing 19, etc. in this embodiment all adopt well-known solutions in the prior art, which are all understood by those skilled in the art and will not be elaborated here.

[0019] The working principle of this embodiment:

[0020] The support column 5 is perpendicular to the bottom plate 12 and is locked with screws at the bottom. The lower bearing seat 11 is installed on the upper plane of the bottom plate 12 and the side surface of the support 5. The angular contact bearing 15 is installed at the bottom of the trapezoidal lead screw 4 and is clamped with a shaft retaining ring 16. The nut seat 14 is screwed onto the trapezoidal lead screw 4. The deep groove ball bearing 19 and the upper bearing seat 3 are inserted into the upper end of the trapezoidal lead screw 4 together, and then the deep groove ball bearing 19 is installed. Two lock nuts 2 are screwed onto the trapezoidal lead screw 4. The aluminum alloy handwheel 1 is inserted into the upper end of the trapezoidal lead screw 4. The washer 17 is fixed above the aluminum alloy handwheel 1 with screws. The two lock nuts 2 are locked up and down. Then the lifting seat 9 is fixed to the nut seat 14, and the fixing plate 8 is fixed to the lifting seat 9. The two nylon top blocks 6 and the adjusting rod 7 are respectively fixed to both ends of the fixing plate 8 through bolts and nuts. The two guide rails 10 are respectively fixed on both sides of the support column 5. The two side plates 18 are respectively fixed to the sliders of the two guide rails 10 with screws and are respectively fixed to both sides of the lifting seat 9 with screws. After installing the casters 13, it can be used normally.

[0021] Move this mechanism to the position where lifting is required, rotate the handwheel 1, and adjust the appropriate height until the nylon top block 6 abuts against the lower plane of the object to be supported. If there is a height difference on both sides, the height of the nylon top block 6 can be locally micro-adjusted by rotating the nut at the bottom of the adjusting seat 7 with a wrench. After the position is determined, rotate each knob 22 to make the flat support 23 screw out from the fixed seat 24 and abut against the ground, so that the roller 13 is lifted off the ground. Multiple sets of this set of jacking mechanisms can also be added to adjust different heights for uneven plane components.

[0022] The jacking mechanism of the present utility model has a simple structure, light weight, small size, is convenient to carry, movable, both the lifting and lowering can be adjusted, has high adjustment accuracy, simple operation, and manual adjustment does not require power connection. It is suitable for local jacking during installation and debugging in small spaces and can be used in various scenarios during installation and debugging. Multiple sets of mechanisms can be used flexibly when needed to meet most installation requirements.

Claims

1. A movable manually adjustable small lifting mechanism, characterized in that: The cam is provided with a bottom support, and the bottom support is connected with a screw thread on the bottom support, and the lower end of the bottom support extends downwardly from the bottom support to the bottom support, and the bottom support is connected with a knob; a support column is vertically arranged on the upper surface of the bottom plate, and guide rails are respectively arranged on both sides of the support column, and the guide rails are parallel to the height direction of the support column. A sliding block is respectively arranged on the two guide rails, and the two sliding blocks are respectively connected to the side plates, and a lifting seat is connected between the two side plates. A fixed plate is arranged on the side of the lifting seat, and the two ends of the fixed plate are respectively connected to the adjusting seat by bolts and nuts, and a nylon top block is fixedly arranged on the adjusting seat. An upper supporting seat and a lower supporting seat are respectively arranged on the upper and lower sides of the support column, and the lower side of the lower supporting seat is connected to the bottom plate, a trapezoidal screw rod is connected between the upper supporting seat and the lower supporting seat, and the trapezoidal screw rod is threadedly connected with a nut seat, and the nut seat is fixedly connected to the lifting seat, and the upper end of the trapezoidal screw rod is connected to a driving handwheel.

2. A movable manually adjustable small lifting mechanism according to claim 1, characterized in that: An angular contact bearing is arranged between the lower support seat and the trapezoidal lead screw, and an elastic retaining ring for the shaft is arranged between the angular contact bearing and the trapezoidal lead screw.

3. The movable manually adjustable small lifting mechanism according to claim 1 is characterized in that: A deep groove ball bearing is arranged between the upper support seat and the trapezoidal lead screw.

4. The movable manually adjustable small lifting mechanism according to claim 1 is characterized in that: The driving hand wheel is connected to the trapezoidal lead screw through a locking nut and a washer.

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