A vehicle-mounted small lifting mechanism

Abstract

This utility model discloses a vehicle-mounted small lifting mechanism, including a column, a mounting base at the top of the column, a rotatable mounting rod on the mounting base, a fixed crossarm at the top of the mounting rod, one end of the bottom wall of the fixed crossarm being fixedly connected to the top of the mounting rod, and the other end of the fixed crossarm having a telescopic movable crossarm. A winch is mounted on the top of the fixed crossarm at the end connected to the mounting rod, and a steel wire rope is wound on the drum of the winch. A guide wheel is mounted on the end of the movable crossarm at the end exposed above the fixed crossarm, one end of the steel wire rope passing over the guide wheel and hanging down naturally, and a hook is mounted on the end of the steel wire rope passing over the guide wheel. The crossarm of this utility model is hinged to the mounting base via the mounting rod and fixed with a support rod, thus allowing for adjustment of the crossarm height and angle, and changing the starting position of the lifting operation. This adapts to the lifting operations of different specifications of core drilling machines, greatly facilitating lifting work.

Description

Technical Field

[0001] This utility model relates to the field of hoisting equipment technology, specifically to a vehicle-mounted small hoisting mechanism. Background Technology

[0002] Road core drilling machines are mainly used for road maintenance, inspection, and scientific research. By drilling core samples, they test key indicators such as road smoothness and strength, providing data support for maintenance. They can also test the compressive and flexural strength of concrete or asphalt pavements. They are widely used in the inspection of infrastructure such as highways and airports, and can also be used to research new road materials, such as the performance verification of new pavement materials. However, road core drilling machines are large and heavy, often requiring two or more workers to move them onto vehicles for transport. To solve this problem, a small vehicle-mounted lifting device was invented. By installing the lifting device on the back of a pickup truck, the core drilling machine can be directly lifted and transported, greatly reducing the workload of equipment handling. However, existing lifting devices generally use welding to fix the crossarm and column, and the lifting height and angle of the crossarm cannot be adjusted. Different models of core drilling machines have different sizes, so it is necessary to adjust the starting height of the crossarm to adapt to the lifting needs of different specifications of core drilling machines. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of the existing technology by providing a vehicle-mounted small lifting mechanism to solve the aforementioned technical problems.

[0004] The present invention adopts the following technical solution: a vehicle-mounted small lifting mechanism includes a detachable column installed on the rear bed of a vehicle. The top of the column is provided with a rotatable mounting base. The mounting base is provided with a flip-up mounting rod. The top of the mounting rod is provided with a fixed cross arm. The bottom wall of one end of the fixed cross arm is fixedly connected to the top of the mounting rod. The other end of the fixed cross arm is provided with a telescopic movable cross arm. A winch is provided at the top of the fixed cross arm at the end connected to the mounting rod. An outer casing is provided outside the winch. The outer casing is fixed to the top of the fixed cross arm. A wire rope is wound on the drum of the winch. A guide wheel is provided at the end of the movable cross arm that protrudes from the fixed cross arm. One end of the wire rope passes around the guide wheel and hangs down naturally. A hook is provided at the end of the wire rope that passes around the guide wheel.

[0005] The lower end of the retaining crossarm is provided with a support rod on the side corresponding to the mounting rod. The upper end of the support rod is hinged to the lower end of the retaining crossarm by a pin. The mounting base is provided with a plurality of positioning slots on the side facing the support rod. The positioning slots are arranged in an inclined and staggered manner from top to bottom. The lower end of the support rod is provided with a limit rod. The limit rod is clamped in the positioning slot. The limit rod and the positioning slot cooperate with each other to adjust the lifting height of the retaining crossarm.

[0006] Furthermore, the fixed cross arm is provided with a number of mounting holes evenly distributed in the transverse direction, and the movable cross arm is provided with a positioning hole that matches the mounting hole at one end inside the fixed cross arm. The fixed cross arm and the movable cross arm are fixedly connected by a quick-release pin, which passes through both the mounting hole and the positioning hole.

[0007] Furthermore, the quick-install pin includes a pin rod that passes through both the mounting hole and the positioning hole. One end of the pin rod has a rod head, and a retaining spring is fitted onto the end of the pin rod with the rod head. One end of the retaining spring abuts against the rod head, and the other end of the retaining spring abuts against the side wall of the retaining cross arm. A positioning protrusion is provided on the side wall of the other end of the pin rod. The retaining cross arm and the movable cross arm have clearance notches at positions corresponding to the mounting hole and the positioning hole, and the clearance notches are interconnected to form a sliding groove that facilitates the sliding of the positioning protrusion.

[0008] Furthermore, the fixed cross arm has a plurality of positioning grooves on the side wall corresponding to the positioning protrusion, and the positioning grooves are respectively connected to each of the mounting holes, and the positioning protrusion is inserted and fixed in the positioning groove.

[0009] Furthermore, the mounting base is rotatably connected to the top of the column, and a retaining screw is provided on one side of the mounting base. The retaining screw is screwed onto the mounting base and its end abuts against the side wall of the column.

[0010] Furthermore, the lower end of the mounting rod is hinged to the upper end of the mounting base via a pin, and one end of the retaining cross arm is welded and fixed to the top end of the mounting rod.

[0011] Furthermore, the movable cross arm is provided with a wheel frame at one end extending from the fixed cross arm, and the guide wheel is mounted on the wheel frame.

[0012] Furthermore, a base plate is fixed on the rear bed of the vehicle, and a mounting base plate is provided on the base plate. A first mounting cylinder is fixed at each of the four corners of the mounting base plate. A second mounting cylinder adapted to the first mounting cylinder is provided on both sides of the base plate of the column. The holes on the two mounting cylinders are connected to each other. The first mounting cylinder and the second mounting cylinder are fixed by insertion of a fixing pin.

[0013] The above-mentioned technical solution of this utility model has the following beneficial effects: The horizontal arm of this utility model is hinged to the mounting base by the mounting rod and fixed with the support rod. In this way, the height and angle of the horizontal arm can be adjusted, and the starting position of the hoisting can be changed. This can be adapted to the hoisting operation of different specifications of core drilling machines, bringing great convenience to the hoisting work. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the main plan view structure of an embodiment of this utility model;

[0016] Figure 2 This is a top cross-sectional view of the fixed cross arm in an embodiment of the present invention;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is a top view of the base plate in an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram showing the arrangement of the positioning groove at the fixed cross arm in an embodiment of this utility model;

[0020] Figure 6 This is a schematic diagram of the arrangement of the positioning groove at the fixed cross arm in the second embodiment. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0023] like Figure 1-5As shown, this utility model embodiment provides a vehicle-mounted small lifting mechanism, including a detachable column 2 installed on the rear bed of a vehicle. The top of the column 2 is provided with a rotatable mounting base 3. The mounting base 3 is provided with a flip-up mounting rod 4. The top of the mounting rod 4 is provided with a fixed cross arm 5. The bottom wall of one end of the fixed cross arm 5 is fixedly connected to the top of the mounting rod 4. The other end of the fixed cross arm 5 is provided with a telescopic movable cross arm 6. A winch 7 is provided at the top of the fixed cross arm 5 at the end connected to the mounting rod 4. The winch 7 is provided with an outer casing, which is fixed to the top of the fixed cross arm 5. The winch 7 is controlled by a control box and can be powered by a mobile power supply. A steel wire rope 8 is wound on the drum of the winch 7. The movable cross arm 6 is provided with a guide wheel 9 at the end exposed from the fixed cross arm 4. One end of the steel wire rope 8 passes over the guide wheel 9 and hangs down naturally. A hook 10 is provided at the end of the steel wire rope 9 that passes over the guide wheel 8.

[0024] A support rod 11 is provided at the lower end of the fixed cross arm 5 on the side corresponding to the mounting rod 4. The upper end of the support rod 11 is hinged to the lower end of the fixed cross arm 5 by a pin. Several positioning slots 12 are provided on the side of the mounting base 3 facing the support rod 11. The positioning slots 12 are arranged in an inclined and staggered manner from top to bottom. A limit rod 13 is provided at the lower end of the support rod 11. The limit rod 13 is clamped in the positioning slot 12. The limit rod 13 and the positioning slot 12 cooperate with each other to adjust the lifting height of the fixed cross arm 5.

[0025] The fixed cross arm 5 is provided with a number of mounting holes 14 evenly distributed in the transverse direction. The movable cross arm 6 is provided with a positioning hole that matches the mounting hole 14 at one end inside the fixed cross arm 5. The fixed cross arm 5 and the movable cross arm 6 are fixedly connected by a quick-release pin, which passes through both the mounting hole 14 and the positioning hole.

[0026] The quick-install pin includes a pin 15 that passes through both the mounting hole 14 and the positioning hole. One end of the pin 15 is provided with a rod head 16. A retaining spring 17 is sleeved on the end of the pin 15 with the rod head 16. One end of the retaining spring 17 abuts against the rod head 16, and the other end of the retaining spring 17 abuts against the side wall of the fixing cross arm 5. A positioning protrusion 18 is provided on the side wall of the other end of the pin 15. The fixing cross arm 5 and the movable cross arm 6 are provided with clearance notches 19 at the positions corresponding to the mounting hole 14 and the positioning hole. The clearance notches 19 are interconnected to form a sliding groove that facilitates the sliding of the positioning protrusion 18.

[0027] The fixed cross arm 5 has several positioning grooves 20 on the side wall of the corresponding positioning protrusion 18. The positioning grooves 20 are connected to each mounting hole 14. The positioning protrusion 18 is inserted and fixed in the positioning groove 20. The positioning groove 20 is located on the side opposite to the mounting hole 14.

[0028] The movable cross arm 6 can be slid along the fixed cross arm 5 to extend the length of the cross arm. Align the positioning hole on the movable cross arm 6 with a mounting hole 14 on the fixed cross arm 5. Then insert the quick-release pin 15 along the mounting hole 14. When inserted, the positioning protrusion 18 at the end of the pin 15 is inserted along the clearance notch 19. When the positioning protrusion 18 at the end of the pin 15 passes through the two cross arms and extends out of the outside of the fixed cross arm 5, the end with the rod head 16 just presses against the clamping spring 17. Then rotate the pin 15 and make the limiting protrusion 18 at its end rotate to the positioning groove 20. Under the action of the spring force of the clamping spring 17, the limiting protrusion 18 can be firmly inserted into the positioning groove 20. In this way, the quick-release pin cannot be removed from the cross arm. Thus, the fixed work of the movable cross arm 6 is completed.

[0029] Mounting base 3 is rotatably connected to the top of column 2. A retaining screw 21 is provided on one side of mounting base 3. The retaining screw 21 is screwed onto mounting base 3 and its end is pressed against the side wall of column 2.

[0030] The lower end of the mounting rod 4 is hinged to the upper end of the mounting base 3 via a pin, and one end of the retaining cross arm 5 is welded and fixed to the top end of the mounting rod 4.

[0031] The movable cross arm 6 is provided with a wheel frame 22 at one end of its extension from the fixed cross arm 5, and the guide wheel 9 is mounted on the wheel frame 22.

[0032] A base plate 23 is fixed on the rear bed 1 of the vehicle. A mounting base plate 24 is provided on the base plate 23. A first mounting cylinder 25 is fixed at the four corners of the mounting base plate 24. A second mounting cylinder 26 adapted to the first mounting cylinder 25 is provided on both sides of the base plate of the column 2. The holes on the two mounting cylinders are connected to each other. The first mounting cylinder 25 and the second mounting cylinder 26 are fixed by insertion of a fixing pin 27.

[0033] like Figure 5 As shown, each mounting hole 14 is provided with a clearance notch 19, and the back side of the retaining cross arm 5 is provided with a clearance notch 19.

[0034] like Figure 6 As shown, in the second embodiment, each mounting hole 14 is provided with a plurality of clearance notches 19 along the circumferential direction, and the back side of the fixing cross arm 5 is provided with a plurality of positioning grooves 20, which are staggered from each other.

[0035] The working principle of this utility model is as follows: The column 2 of the hoisting mechanism is installed on the mounting base plate 24 of the rear bed 1 of the vehicle. Then, the fixed cross arm 5 is rotated along the column 2, so that its movable cross arm 6 is rotated to the position of the core drill. The hook 10 is used to hang on the core drill. Then, the winch 7 is started to wind up the wire rope 8 to lift the core drill. Then, the fixed cross arm 5 is manually rotated to move the lifted core drill above the ground. Then, the winch 7 is controlled to release the wire rope 8 outward, so that the core drill can be lowered. After the core drill is placed until the sampling is completed, the hook 10 is removed and the fixed cross arm 5 is rotated into the vehicle frame. Then, the fixed screw 21 is tightened to fix the position of the mounting base 3, thereby preventing the fixed cross arm 5 from rotating outside the vehicle and affecting the driving safety of the vehicle. Using the same method, after the core drill is used, the hoisting mechanism is used to lift the core drill back onto the truck bed. In this way, the hoisting operation of the core drill is realized.

[0036] The embodiments of this utility model can be used to hoist core drilling machines, and can also be used for hoisting operations of other small and medium-sized equipment.

[0037] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A vehicle-mounted miniature hoisting mechanism, characterized in that: The device includes a detachable column mounted on the rear bed of a vehicle. The top of the column is provided with a rotatable mounting base. The mounting base is provided with a flip-up mounting rod. The top of the mounting rod is provided with a retaining crossarm. The bottom wall of one end of the retaining crossarm is fixedly connected to the top of the mounting rod. The other end of the retaining crossarm is provided with a telescopic movable crossarm. A winch is provided at the top of the end of the retaining crossarm that is connected to the mounting rod. A wire rope is wound on the drum of the winch. A guide wheel is provided at the end of the movable crossarm that is exposed above the retaining crossarm. One end of the wire rope passes over the guide wheel and hangs down naturally. A hook is provided at the end of the wire rope that passes over the guide wheel. The lower end of the retaining crossarm is provided with a support rod on the side corresponding to the mounting rod. The upper end of the support rod is hinged to the lower end of the retaining crossarm by a pin. The mounting base is provided with a plurality of positioning slots on the side facing the support rod. The positioning slots are arranged in an inclined and staggered manner from top to bottom. The lower end of the support rod is provided with a limit rod. The limit rod is clamped in the positioning slot. The limit rod and the positioning slot cooperate with each other to adjust the lifting height of the retaining crossarm.

2. The vehicle-mounted miniature hoisting mechanism according to claim 1, characterized in that: The fixed cross arm is provided with a number of mounting holes evenly distributed in the transverse direction. The movable cross arm is provided with a positioning hole that matches the mounting holes at one end inside the fixed cross arm. The fixed cross arm and the movable cross arm are fixedly connected by a quick-release pin, which passes through both the mounting hole and the positioning hole.

3. The vehicle-mounted miniature hoisting mechanism according to claim 2, characterized in that: The quick-install pin includes a pin rod that passes through both the mounting hole and the positioning hole. One end of the pin rod has a rod head, and a retaining spring is fitted onto the end of the pin rod with the rod head. One end of the retaining spring abuts against the rod head, and the other end of the retaining spring abuts against the side wall of the retaining cross arm. A positioning protrusion is provided on the side wall of the other end of the pin rod. The retaining cross arm and the movable cross arm have clearance notches at the positions corresponding to the mounting hole and the positioning hole, and the clearance notches are interconnected to form a sliding groove that facilitates the sliding of the positioning protrusion.

4. The vehicle-mounted miniature hoisting mechanism according to claim 3, characterized in that: The fixed cross arm has several positioning grooves on the side wall corresponding to the positioning protrusion. The positioning grooves are respectively connected to each of the mounting holes, and the positioning protrusion is inserted and fixed in the positioning groove.

5. The vehicle-mounted miniature hoisting mechanism according to claim 1, characterized in that: The mounting base is rotatably connected to the top of the column. A retaining screw is provided on one side of the mounting base. The retaining screw is screwed onto the mounting base and its end abuts against the side wall of the column.

6. The vehicle-mounted miniature hoisting mechanism according to claim 1, characterized in that: The lower end of the mounting rod is hinged to the upper end of the mounting base via a pin, and one end of the retaining cross arm is welded and fixed to the top end of the mounting rod.

7. The vehicle-mounted miniature hoisting mechanism according to claim 1, characterized in that: The movable cross arm is provided with a wheel frame at one end extending from the fixed cross arm, and the guide wheel is mounted on the wheel frame.

8. The vehicle-mounted miniature hoisting mechanism according to claim 1, characterized in that: A base plate is fixed on the rear bed of the vehicle, and a mounting base plate is provided on the base plate. A first mounting cylinder is fixed at each of the four corners of the mounting base plate. A second mounting cylinder adapted to the first mounting cylinder is provided on both sides of the base plate of the column. The holes on the two mounting cylinders are connected to each other. The first mounting cylinder and the second mounting cylinder are fixed by a fixing pin.

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