A road maintenance material hoist

Abstract

The utility model relates to hoist device technical field discloses a kind of road maintenance material hoist device, the device includes fixed base, pillar, swivel post, fixed plate and first hoist arm being rotatably connected in fixed plate by pivot, angle adjusting assembly is arranged, the component includes first threaded column, second threaded column, guide block, guide slot, clamping block and first clamping groove, when rotating first threaded column, second threaded column constrained by guide block and guide slot will produce pure linear motion, and then drive clamping block to separate or be inserted in the first clamping groove of fixed plate, to this end realize the accurate adjustment and reliable locking of the operating elevation angle of first hoist arm, the device further includes the second hoist arm being slidably inserted in first hoist arm.The utility model can flexibly adjust the operating angle and length of hoist arm, locking is reliable, and the adaptability of equipment to complex maintenance site is improved.

Description

Technical Field

[0001] This utility model relates to the field of lifting device technology, and in particular to a lifting device for road maintenance materials. Background Technology

[0002] In road maintenance work, it is often necessary to hoist and transport maintenance materials such as asphalt, repair tools or manhole covers over short distances.

[0003] To meet this demand, some small, portable lifting devices or mini cranes have emerged in the existing technology. These devices have improved maintenance efficiency to some extent. However, traditional portable lifting devices have relatively simple structures, and the working angle of their lifting arms is usually fixed or requires complex tools to adjust. When facing work points at different heights, such as when materials need to be lifted to higher positions or over obstacles, this fixed-angle lifting arm is not very adaptable and cannot flexibly adjust its working posture. This design limitation makes the equipment unable to adapt to complex road maintenance sites, reducing its practicality and work efficiency.

[0004] Therefore, this utility model proposes a road maintenance material lifting device to overcome the shortcomings of the prior art. Utility Model Content

[0005] In view of the problems of fixed boom angle, inflexible adjustment of working posture, and poor on-site adaptability of existing road maintenance material lifting devices, this utility model aims to provide a road maintenance material lifting device with improved structure that can effectively solve the above problems.

[0006] This utility model provides a road maintenance material lifting device, including: a fixed base, a support column vertically fixedly connected to the fixed base, a rotating column rotatably installed on the upper end of the support column, a fixed plate fixedly installed on the rotating column, a first lifting arm rotatably connected to the fixed plate via a rotating shaft, and an angle adjustment component.

[0007] The angle adjustment component includes a first threaded post threadedly connected to the inside of the first lifting arm, and a second threaded post is threadedly engaged with the first threaded post.

[0008] Furthermore, a guide block is fixedly installed above the second threaded column, and a guide groove for the guide block to slide is opened inside the first lifting arm. A locking block is fixedly installed at one end of the second threaded column, and multiple first locking slots for the locking block to be inserted are opened inside the fixed plate. Through this structural cooperation, the angle adjustment and locking of the first lifting arm relative to the fixed plate are realized.

[0009] Preferably, the road maintenance material lifting device further includes a second lifting arm and a length adjustment assembly. The second lifting arm is slidably inserted inside the first lifting arm. The length adjustment assembly includes a fixed threaded post fixed to the outer wall of the first lifting arm, a knob threaded to the fixed threaded post, and a locking post fixedly installed inside the knob. The second lifting arm has multiple second slots for the locking post to be engaged.

[0010] Preferably, the road maintenance material lifting device further includes a lifting motor and a lifting claw hook. The lifting motor is fixedly installed above the end of the second lifting arm, and the lifting claw hook is connected to the lifting motor via a steel cable.

[0011] Preferably, the internal thread of the knob engages with the external thread of the fixed threaded post, and the retaining post is fixed to the knob and positioned perpendicular to the axis of the fixed threaded post.

[0012] Preferably, the fixed plate is further provided with a sliding groove, and the first lifting arm rotates within the range defined by the sliding groove with the pivot as the center.

[0013] Preferably, the guide groove is a straight groove, and the guide block slides in contact with the groove wall of the guide groove.

[0014] Preferably, the rotating end of the first threaded column is exposed outside the first lifting arm.

[0015] Preferably, the root of the first lifting arm is rotatably connected to the fixed plate via the pivot.

[0016] Preferably, the road maintenance material lifting device further includes an extension base, the outer wall of which is slidably connected to the inside of the fixed base and fixedly connected by threaded parts.

[0017] This utility model has the following beneficial effects: 1. This utility model, by setting an angle adjustment component, uses the rotation of the first threaded column to drive the second threaded column constrained by the guide block and the guide groove to perform linear movement, so that the locking block can be engaged or disengaged in the first locking groove of the fixed plate. This solves the problem of the fixed elevation angle of the crane arm in the prior art and its inability to adapt to height changes. It achieves the technical effect of being able to accurately adjust and reliably lock the working angle of the crane arm and improve the on-site height adaptability.

[0018] 2. This utility model, by setting a length adjustment component, uses the rotation of the knob to make it move along the fixed threaded column, causing the locking column to engage or disengage in the second locking groove of the second lifting arm, which solves the problem of the fixed working radius of the lifting arm and inability to extend and retract in the prior art, and achieves the technical effect of being able to quickly adjust the working length of the lifting arm and flexibly adapt to different working distances.

[0019] 3. This utility model solves the problems of single working direction and poor stability of portable devices in the prior art by setting a horizontally rotatable rotating column and a slidable and fixed extension base, and achieves the technical effect of compact structure, flexible adjustment of working direction, and enhanced installation stability of equipment as needed. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a road maintenance material lifting device proposed in this utility model; Figure 2 This is a schematic diagram of the first lifting arm of a road maintenance material lifting device proposed in this utility model; Figure 3 for Figure 2 Enlarged view of point A in the image; Figure 4 This is a schematic diagram of the second lifting arm of a road maintenance material lifting device proposed in this utility model; Figure 5 for Figure 4 Enlarged view of point B in the image.

[0021] Legend: 1. Fixed base; 2. Support column; 3. Rotating column; 4. First lifting arm; 5. Second lifting arm; 6. Lifting motor; 7. Lifting claw hook; 8. Angle adjustment assembly; 801. First threaded column; 802. Guide groove; 803. Guide block; 804. Second threaded column; 805. Locking block; 806. First locking slot; 9. Length adjustment assembly; 901. Knob; 902. Fixed threaded column; 903. Locking column; 904. Second locking slot; 10. Extension base; 11. Rotating shaft; 12. Slide groove; 13. Fixing plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please refer to Figures 1 to 5 This utility model provides a road maintenance material lifting device, which aims to solve the problem that the lifting arm angle and length of the portable lifting device in the prior art are fixed, and the working posture cannot be flexibly adjusted, resulting in poor on-site adaptability.

[0024] like Figure 1As shown, the road maintenance material lifting device includes a fixed base 1, which serves as the mounting base for the entire device and provides stable support for the equipment. An extension base 10 is slidably connected inside the fixed base 1. The outer wall of the extension base 10 slides and engages with the inner wall of the fixed base 1, and is fixedly connected by threaded parts to increase the overall support area and stability. A column 2 is vertically fixedly connected above the fixed base 1. A rotating column 3 is rotatably installed at the upper end of the column 2. The rotating column 3 is used to achieve horizontal rotation. A fixed plate 13 is fixedly installed above the rotating column 3. The fixed plate 13 rotates together with the rotating column 3 and serves as the mounting platform for the lifting arm.

[0025] like Figure 1 , Figure 2 and Figure 4 As shown, the device also includes a first lifting arm 4, the root of which is rotatably connected to a fixed plate 13 via a pivot 11, so that the first lifting arm 4 can pitch around the pivot 11 to change the working elevation angle.

[0026] Angle adjustment component 8 is located at the root of the first lifting arm 4 near the pivot 11. The angle adjustment component 8 includes a first threaded post 801, which is threaded into the inside of the first lifting arm 4, with its rotating end exposed outside for easy operation. A second threaded post 804 is threaded into the first threaded post 801. A guide block 803 is fixedly mounted above the second threaded post 804. A corresponding straight groove 802 is formed inside the first lifting arm 4. The guide block 803 slides against the groove wall of the guide groove 802, thus limiting the movement of the second threaded post 804. The motion is purely linear reciprocating, so that when the first threaded column 801 is rotated, the rotational motion of the first threaded column 801 is converted into the axial linear motion of the second threaded column 804. A locking block 805 is fixedly installed at one end of the second threaded column 804. The fixing plate 13 has multiple first locking slots 806 that are adapted to the locking block 805. At the same time, the fixing plate 13 also has a sliding groove 12. The first lifting arm 4 rotates around the rotating shaft 11 within the range defined by the sliding groove 12. When the locking block 805 is engaged in any one of the first locking slots 806, the rotation of the first lifting arm 4 is locked, and the angle is fixed.

[0027] Based on the above embodiments, the present invention may further include the following preferred technical solutions: In a preferred embodiment, to achieve the adjustment of the boom length, the device further includes a second boom 5 and a length adjustment assembly 9. The second boom 5 is telescopically slidably inserted into the first boom 4. The length adjustment assembly 9 is used to lock the position of the second boom 5 relative to the first boom 4. The length adjustment assembly 9 includes a fixed threaded post 902, which is fixed to the outer wall of the first boom 4. A knob 901 is threadedly connected to the fixed threaded post 902. The internal thread of the knob 901 engages with the external thread of the fixed threaded post 902, so that the knob 901 can translate along the axial direction of the fixed threaded post 902 when rotated. A locking post 903 is fixedly installed inside the knob 901 and is arranged perpendicular to the axis of the fixed threaded post 902. The second boom 5 has multiple second locking slots 904 adapted to the locking posts 903 for locking at different telescopic positions.

[0028] In a preferred embodiment, in order to provide lifting power, the device also includes a lifting motor 6 and a lifting claw hook 7. The lifting motor 6 is fixedly installed above the end of the second lifting arm 5, and the lifting claw hook 7 is connected to the lifting motor 6 by a steel cable for gripping and lifting maintenance materials.

[0029] In a preferred embodiment, to enhance the stability of the device, the device further includes an extension base 10, the outer wall of which is slidably connected to the inner cavity of the fixed base 1, and the extension base 10 is fixedly connected to the fixed base 1 by a threaded component to increase the grounding area.

[0030] The working principle of this utility model's road maintenance material lifting device is as follows: When it is necessary to adjust the working elevation angle of the first lifting boom 4, the operator rotates the first threaded column 801. Since the guide block 803 slides and is limited in the guide groove 802, the second threaded column 804 cannot rotate. Therefore, the rotational motion of the first threaded column 801 is converted into the axial linear motion of the second threaded column 804 through the threaded engagement, which drives the locking block 805 fixed at one end to disengage from the first locking groove 806 inside the fixing plate 13. At this time, the first lifting boom 4 is unlocked, and the operator can push the first lifting boom 4 to rotate around the rotating shaft 11 and adjust it to a suitable angle within the range limited by the slide groove 12. After the adjustment is in place, the first threaded column 801 is rotated in the opposite direction, so that the second threaded column 804 moves linearly in the opposite direction, which drives the locking block 805 to re-engage in the corresponding first locking groove 806, thus completing the reliable locking of the angle.

[0031] When the working length of the lifting boom needs to be adjusted, the operator turns knob 901. Since knob 901 is threadedly connected to the fixed threaded post 902 fixed to the outer wall of the first lifting boom 4, the rotation of knob 901 will cause it to translate along the axial direction of the fixed threaded post 902. This translational movement causes the locking post 903 fixed inside knob 901 to disengage from the second locking groove 904 inside the second lifting boom 5. At this time, the second lifting boom 5 is unlocked, and the operator can push the second lifting boom 5 to slide inside the first lifting boom 4 to adjust the telescopic length. After adjusting to the appropriate position, turn knob 901 in the opposite direction to make the locking post 903 re-engage into the corresponding second locking groove 904, thus completing the reliable locking of the length.

[0032] During operation, the rotating column 3 can drive the fixed plate 13 and the entire lifting arm above it to rotate horizontally on the support column 2 to adjust the working direction. After the lifting motor 6 starts, it drives the lifting claw hook 7 to rise or fall through the steel cable to lift and transport the maintenance materials. When needed, the extension base 10 can also be extended from the inside of the fixed base 1 and fixed to increase the support area of ​​the equipment and improve the stability of operation.

[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A road maintenance material lifting device, comprising a fixed base (1), a support column (2), a rotating column (3), a fixed plate (13), and a first lifting arm (4), wherein the support column (2) is vertically fixedly connected above the fixed base (1), the rotating column (3) is rotatably installed on the upper end of the support column (2), the fixed plate (13) is fixedly installed above the rotating column (3), and the first lifting arm (4) is rotatably connected to the fixed plate (13) via a rotating shaft (11). Its features are, The device further includes an angle adjustment component (8), which includes a first threaded post (801) threadedly connected to the inside of the first lifting arm (4), a second threaded post (804) threadedly engaged in the first threaded post (801), a guide block (803) fixedly disposed above the second threaded post (804), a guide groove (802) for sliding the guide block (803) being opened inside the first lifting arm (4), a locking block (805) fixedly installed at one end of the second threaded post (804), and a plurality of first slots (806) for the locking block (805) to be engaged inside the fixing plate (13).

2. The road maintenance material lifting device according to claim 1, characterized in that, The device also includes a second lifting arm (5) and a length adjustment assembly (9). The second lifting arm (5) is slidably inserted into the first lifting arm (4). The length adjustment assembly (9) includes a fixed threaded post (902), a knob (901), and a locking post (903). The fixed threaded post (902) is fixed to the outer wall of the first lifting arm (4). The knob (901) is threaded to the fixed threaded post (902). The locking post (903) is fixedly installed inside the knob (901). The second lifting arm (5) has multiple second slots (904) for the locking post (903) to be inserted into.

3. The road maintenance material lifting device according to claim 1, characterized in that, The fixed plate (13) is also provided with a sliding groove (12), and the first lifting arm (4) rotates within the range defined by the sliding groove (12) with the rotating shaft (11) as the center.

4. The road maintenance material lifting device according to claim 1, characterized in that, The guide groove (802) is a straight groove, and the guide block (803) slides in contact with the groove wall of the guide groove (802).

5. A road maintenance material lifting device according to claim 1, characterized in that, The rotating end of the first threaded column (801) is exposed outside the first lifting arm (4).

6. A road maintenance material lifting device according to claim 1, characterized in that, The root of the first lifting arm (4) is rotatably connected to the fixed plate (13) via the pivot (11).

7. A road maintenance material lifting device according to claim 2, characterized in that, The internal thread of the knob (901) engages with the external thread of the fixed threaded post (902), and the retaining post (903) is fixed to the knob (901) and is arranged perpendicular to the axis of the fixed threaded post (902).

8. A road maintenance material lifting device according to claim 2, characterized in that, The device also includes a lifting motor (6) and a lifting claw hook (7). The lifting motor (6) is fixedly installed above the end of the second lifting arm (5), and the lifting claw hook (7) is connected to the lifting motor (6) by a steel cable.

9. A road maintenance material lifting device according to claim 1, characterized in that, The device also includes an extension base (10), the outer wall of which is slidably connected to the inside of the fixed base (1) and fixedly connected by a threaded component.

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