Mountain land dragging pry

Abstract

The utility model relates to the technical field of crowbars, in particular to a mountain land dragging pry which comprises a center connecting rod and triangular side plates symmetrically fixed to the two ends of the center connecting rod, moving idler wheels are installed on the lower portions of the two sides of the two triangular side plates through rotating shafts, straight groove openings are formed in the side walls of the two triangular side plates, and the straight groove openings are communicated with the center connecting rod. A sleeving limiting rod is installed on the inner wall of an opening of the straight groove in a penetrating mode, and the outer wall of the sleeving limiting rod is sleeved with a rotating sleeve; through mutual cooperation of rotating bearings at the two ends of the rotating sleeve, the center connecting rod and the triangular side plates, relative installation of the center connecting rod, the triangular side plates, the movable rolling wheels and the rotating sleeve is achieved, the device can be conveniently moved as a whole, and meanwhile the device can serve as a crowbar fulcrum after the rotating sleeve and the crowbar column body are combined to achieve the crowbar function of the whole device; and the sleeving limiting rod clamped between the openings of the straight grooves can move to a certain degree under the supporting cooperation of the springback mechanism, so that the edge warping difficulty in the using process of the device is reduced, and the using efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of crowbar technology, specifically a mountain tow crowbar. Background Technology

[0002] A crowbar is a lightweight yet sturdy metal rod used to lift heavy objects. It utilizes the lever principle to overcome gravity, thus lifting and displacing the object from the ground. Crowbars have wide applications in various situations, such as railway track inspection and maintenance, door-breaking rescue, equipment dismantling, cutting steel bars, and wall demolition. In mountainous construction, crowbars can also be used as an auxiliary tool during the laying of waterproof geomembranes.

[0003] Currently, in existing technologies, construction specifications prohibit large machinery from operating during the geotextile laying process. As a result, workers need to use crowbars to move and lay the geomembrane, which is time-consuming and labor-intensive. Furthermore, it is difficult to find the necessary support points during construction, leading to reduced construction efficiency.

[0004] Therefore, a mountain trolley was proposed to address the above issues. Utility Model Content

[0005] To address the shortcomings of existing technologies and solve the problem that construction regulations prohibit large machinery from operating during geotextile laying, requiring workers to use crowbars to move and lay the geomembrane, which is time-consuming, labor-intensive, and difficult to find suitable support points, thus reducing construction efficiency, a mountain-mountain drag crowbar is proposed.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The mountain towing pry bar of this utility model includes a central connecting rod and triangular side plates symmetrically fixed at both ends. Moving rollers are installed on the lower sides of both triangular side plates via rotating shafts. Straight groove openings are provided on the side walls of both triangular side plates. A fitting limiting rod is installed through the inner wall of the straight groove opening. A rotating sleeve is fitted onto the outer wall of the fitting limiting rod. Two pry bar columns are fixedly connected to the outer wall of the rotating sleeve. The center lines of the two pry bar columns form a certain angle and are coplanar with the cross section of the rotating sleeve. A pry bar crossbar is fixedly connected to the end of one pry bar column away from the rotating sleeve, and a pry bar handle is fixedly connected to the end of the other pry bar column away from the rotating sleeve.

[0007] Preferably, both ends of the rotating sleeve are fitted with rotating bearings, the inner rings of the two rotating bearings are fitted together with the outer wall of the fitting limit rod, and the two rotating sleeves are located between the adjacent side walls of the two triangular side plates.

[0008] Preferably, the outer wall of the central connecting rod is fitted with a spring mechanism, the spring mechanism including an arc-shaped strip, and a ball bearing is installed on the upper arc surface of the arc-shaped strip, the ball bearing contacting the outer wall of the rotating sleeve.

[0009] Preferably, the lower arc surface of the arc-shaped strip is symmetrically hinged with a spring-loaded connecting rod via a bracket, and one end of the spring-loaded connecting rod is hinged with an annular sleeve.

[0010] Preferably, the inner wall protrusion of the annular sleeve engages with the outer wall groove of the central connecting rod.

[0011] Preferably, both ends of the central connecting rod are fitted with rebound springs, which are located between the adjacent side walls of the triangular side plate and the annular sleeve.

[0012] Preferably, one end of the set limiting rod is fixedly connected to a limiting circular plate, and the outer wall of the other end of the set limiting rod is provided with a limiting groove.

[0013] Preferably, a limiting plate is fitted onto the inner wall of the limiting slot, and the side wall of the limiting plate is fixed to the side wall of the triangular side plate by bolts.

[0014] The beneficial effects of this utility model are:

[0015] In this invention, the relative installation of the central connecting rod, the triangular side plate, the moving roller, and the rotating sleeve is achieved through the mutual cooperation between the rotating bearings at both ends of the rotating sleeve and the central connecting rod and the triangular side plate. This facilitates the overall movement of the device and also serves as a fulcrum for the pry bar after the rotating sleeve and the pry bar column are combined, thus realizing the pry bar function of the entire device. Furthermore, the limiting rod of the set, which is locked between the openings of the straight groove, can be displaced to a certain extent under the support of the spring mechanism, reducing the difficulty of warping during the use of the device and improving the efficiency of use. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, 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:

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a perspective view showing a partial disassembly of the rotating sleeve and rotating bearing in this utility model;

[0019] Figure 3 This is a perspective view of the triangular side plate as a whole in this utility model;

[0020] Figure 4 This is a perspective view of the springback mechanism in this utility model;

[0021] Legend:

[0022] 1. Central connecting rod; 2. Triangular side plate; 3. Moving roller; 21. Straight groove opening; 4. Set limit rod; 5. Rotating sleeve; 51. Crowbar column; 52. Crowbar crossbar; 53. Crowbar handle; 6. Rotary bearing; 7. Springback mechanism; 71. Arc-shaped strip; 72. Ball bearing; 73. Springback connecting rod; 74. Annular sleeve; 75. Springback spring; 41. Limiting circular plate; 42. Limiting slot; 8. Limiting plate. Detailed Implementation

[0023] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Specific implementation examples are given below.

[0025] Please see Figure 1 - Figure 4 This utility model provides a mountain tow pry bar, including a central connecting rod 1 and triangular side plates 2 symmetrically fixed at both ends. Moving rollers 3 are mounted on the lower sides of both triangular side plates 2 via rotating shafts. Straight groove openings 21 are formed on the side walls of both triangular side plates 2. A fitting limiting rod 4 is installed through the inner wall of the straight groove opening 21. A rotating sleeve 5 is fitted onto the outer wall of the fitting limiting rod 4. Two pry bar pillars 51 are fixed to the outer wall of the rotating sleeve 5. The centerlines of the two pry bar pillars 51 form a certain angle and are coplanar with the cross section of the rotating sleeve 5. A pry bar crossbar 52 is fixed to the end of one pry bar pillar 51 away from the rotating sleeve 5, and a pry bar handle 53 is fixed to the end of the other pry bar pillar 51 away from the rotating sleeve 5. Rotary bearings 6 are fitted at both ends of the rotating sleeve 5. The inner rings of the two rotating bearings 6 are fitted together with the outer wall of the fitting limiting rod 4. The two rotating sleeves 5 are located on two... Between the adjacent side walls of the triangular side plates 2, the triangular side plates 2 are fixedly installed at both ends of the central connecting rod 1. The triangular side plates 2 are installed with the mounting limit rod 4 through the opening of the straight groove 21, so that the mounting limit rod 4 can change position under the restriction of the straight groove opening 21. With the cooperation of the rotating bearing 6, the rotating sleeve 5, which is mounted between the triangular side plates 2 and the mounting limit rod 4, can rotate around the axis of the mounting limit rod 4. In addition, the mutual cooperation between the pry bar column 51 on the side wall of the rotating sleeve 5 makes the whole device form a bent pry bar that can rotate around the mounting limit rod 4. The base formed by the cooperation of the central connecting rod 1, the triangular side plates 2 and the moving roller 3 can serve as the movable fulcrum of the pry bar. The pry bar handle 53 serves as the pry bar pressing output end, and the pry bar crossbar 52 is the structure that directly contacts the geomembrane, etc. Its crossbar contact characteristics ensure that the device will not damage the geomembrane when prying it.

[0026] like Figure 3 and Figure 4 As shown, a spring-loaded mechanism 7 is fitted onto the outer wall of the central connecting rod 1. The spring-loaded mechanism 7 includes an arc-shaped plate 71. A ball bearing 72 is mounted on the upper arc surface of the arc-shaped plate 71, and the ball bearing 72 contacts the outer wall of the rotating sleeve 5. A spring-loaded connecting rod 73 is symmetrically hinged to the lower arc surface of the arc-shaped plate 71 via a bracket. An annular sleeve 74 is hinged to one end of the spring-loaded connecting rod 73. The inner wall protrusion of the annular sleeve 74 engages with the outer wall groove of the central connecting rod 1. Spring-loaded springs 75 are fitted onto both ends of the central connecting rod 1. The spring-loaded springs 75 are located between the adjacent side walls of the triangular side plate 2 and the annular sleeve 74. Under the constraint of the engagement between the inner wall protrusion and the outer wall groove of the central connecting rod 1, the annular sleeve 74 of the spring-loaded mechanism 7 can only move radially. The movement, coupled with the elastic force of the spring 75 between the two annular sleeves 74 and the triangular side plate 2, causes the annular sleeves 74 to tend to move closer to each other. The annular sleeves 74 are linked with the arc-shaped strip 71 under the hinge of the spring link 73, which makes the arc-shaped strip 71 tend to press against the rotating sleeve 5. The arc-shaped strip 71 contacts the outer wall of the rotating sleeve 5 through the ball bearings 72. The contact method of rotational friction can reduce the frictional resistance of the spring mechanism 7 during the rotation of the rotating sleeve 5. When the device is used, the rotating sleeve 5 is pressed down by pressing the pry bar handle 53 and then displaced after overcoming the elastic force of the spring 75. This process can reduce the difficulty of prying the device to a certain extent.

[0027] like Figure 3 As shown, one end of the mounting limit rod 4 is fixedly connected to a limit plate 41, and the outer wall of the other end of the mounting limit rod 4 has a limit groove 42. The inner wall of the limit groove 42 is fitted with a limit plate 8. The side wall of the limit plate 8 is fixedly connected to the side wall of the triangular side plate 2 by bolts. The limit plate 8, which is fixed to one side of the triangular side plate 2 by bolts, limits one end of the central connecting rod 1 by the mutual engagement between its one end and the limit groove 42. In addition, the position between the triangular side plate 2 and the mounting limit rod 4 is limited by the cooperation of the limit plate 41 at the other end of the mounting limit rod 4. When the rotating sleeve 5 and the pry bar column 51 are damaged as a whole, the rotating sleeve 5 can be replaced by removing the limit plate 8 and pulling out the mounting limit rod 4.

[0028] Working principle: The triangular side plates 2, fixedly installed at both ends of the central connecting rod 1, are used to install the mounting limit rod 4 through the opening 21 of the straight groove. This allows the mounting limit rod 4 to change position within the constraint of the straight groove opening 21. With the cooperation of the rotary bearing 6, the rotating sleeve 5, fitted between the triangular side plates 2 and the mounting limit rod 4, can rotate around the axis of the mounting limit rod 4. Furthermore, the cooperation between the pry bar columns 51 on the side walls of the rotating sleeve 5 forms a bent pry bar that can rotate around the mounting limit rod 4. The base, consisting of rod 1, triangular side plate 2, and movable roller 3, serves as a movable fulcrum for the crowbar. The crowbar handle 53 acts as the crowbar pressing output end, while the crowbar crossbar 52, being the structure that directly contacts the geomembrane, ensures that the device will not damage the geomembrane when prying it. The annular sleeve 74 of the rebound mechanism 7 can only move radially due to the interlocking of its inner wall protrusion and the outer wall groove of the central connecting rod 1. In addition, the rebound springs 75 between the two annular sleeves 74 and the triangular side plate 2 further enhance the rebound effect. Under the action of the force, the annular sleeves 74 tend to move closer to each other. The annular sleeves 74 are hinged to the arc-shaped plate 71 via the return link 73, causing the arc-shaped plate 71 to tend to press against the rotating sleeve 5. The arc-shaped plate 71 contacts the outer wall of the rotating sleeve 5 via the ball bearings 72. This rotational friction reduces the frictional resistance of the return mechanism 7 during the rotation of the rotating sleeve 5. When the device is in use, pressing the pry bar handle 53 causes the rotating sleeve 5 to press down, overcoming the spring force of the return spring 75. The displacement after the force of the action can reduce the difficulty of the device to a certain extent. The limiting plate 8, which is fixed to one side of the triangular side plate 2 by bolts, limits one end of the central connecting rod 1 by the mutual engagement between one end of the limiting plate 8 and the limiting groove 42. In addition, the limiting plate 41 at the other end of the sleeve limiting rod 4 limits the position between the triangular side plate 2 and the sleeve limiting rod 4. When the rotating sleeve 5 and the pry bar column 51 are damaged as a whole, the rotating sleeve 5 can be replaced as a whole by removing the limiting plate 8 and pulling out the sleeve limiting rod 4.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A mountain sled, comprising a central connecting rod (1) and triangular side plates (2) symmetrically fixed at both ends thereof, characterized in that: Both sides of the two triangular side plates (2) are equipped with movable rollers (3) via a pivot. The side walls of the two triangular side plates (2) are provided with straight groove openings (21). A fitting limiting rod (4) is installed through the inner wall of the straight groove opening (21). A rotating sleeve (5) is fitted on the outer wall of the fitting limiting rod (4). Two pry bar columns (51) are fixed to the outer wall of the rotating sleeve (5). The center lines of the two pry bar columns (51) are at a certain angle and coplanar with the cross section of the rotating sleeve (5). A pry bar crossbar (52) is fixed to the end of one pry bar column (51) away from the rotating sleeve (5), and a pry bar handle (53) is fixed to the end of the other pry bar column (51) away from the rotating sleeve (5).

2. The mountain sled as described in claim 1, characterized in that: Both ends of the rotating sleeve (5) are fitted with rotating bearings (6), and the inner rings of the two rotating bearings (6) are fitted together with the outer wall of the fitting limit rod (4). The two rotating sleeves (5) are located between the adjacent side walls of the two triangular side plates (2).

3. The mountain sled as described in claim 2, characterized in that: The outer wall of the central connecting rod (1) is fitted with a spring mechanism (7), which includes an arc-shaped strip (71). A ball bearing (72) is installed on the upper arc surface of the arc-shaped strip (71), and the ball bearing (72) contacts the outer wall of the rotating sleeve (5).

4. The mountain sled according to claim 3, characterized in that: The lower arc surface of the arc-shaped strip (71) is symmetrically hinged with a spring-loaded connecting rod (73) via a bracket, and one end of the spring-loaded connecting rod (73) is hinged with an annular sleeve (74).

5. The mountain sled according to claim 4, characterized in that: The inner wall protrusion of the annular sleeve (74) engages with the outer wall groove of the central connecting rod (1).

6. The mountain sled according to claim 5, characterized in that: Both ends of the central connecting rod (1) are fitted with rebound springs (75), which are located between the adjacent side walls of the triangular side plate (2) and the annular sleeve (74).

7. The mountain sled as described in claim 1, characterized in that: One end of the set limiting rod (4) is fixed to a limiting circular plate (41), and the other end of the set limiting rod (4) has a limiting slot (42) on its outer wall.

8. The mountain sled according to claim 7, characterized in that: The inner wall of the limiting slot (42) is fitted with a limiting plate (8), and the side wall of the limiting plate (8) is fixed to the side wall of the triangular side plate (2) by bolts.

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