Rear protection device of loading machine

Abstract

The utility model discloses a rear protection device of a loader, which belongs to the technical field of loaders and comprises a mounting seat, buffer grooves are arranged at two ends of one side of the mounting seat, contraction columns are arranged in the buffer grooves, protection plates are arranged at the outer ends of the contraction columns, buffer springs are arranged at one ends of the contraction columns, and buffer cylinders are arranged on the inner sides of the buffer springs. A pressing rod is arranged in the buffering cylinder, a piston is arranged at one end of the pressing rod, a cavity is formed in the buffering cylinder, and an air hole which is communicated with the outside and is small in diameter is formed in one side of the bottom end of the buffering cylinder. The impact force borne by the anti-skid plate acts on the buffer spring and the pressing rod, so that the piston is pushed to move, the buffer effect is achieved through the cooperation with the air hole formed in the cavity and the change of the air pressure in the cavity, the influence caused by collision is reduced through the cooperation with the buffer spring, and therefore the protection function is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of loading machine, concretely relates to a loading machine rear protection device. BACKGROUND

[0002] The loading machine is a kind of earthwork construction machinery widely used in highway, railway, building, water and electricity, port, mine and other construction projects, it is mainly used for shoveling soil, sand, lime, coal and other bulk materials, and also can be used for light shovel operation to ore, hard soil and other materials.

[0003] According to the patent number CN202220225686.4 discloses a kind of loading machine rear protection device, including base, and the protection mechanism of installation on base;Protection mechanism includes mounting plate and protection component, mounting plate upper surface is provided with protection component, base side wall is recessed inward and forms the storage slot for receiving mounting plate;Protection component includes first guardrail, mounting plate upper surface is also provided with the mounting seat for installing first guardrail.

[0004] The above scheme still has certain technical defects in the process of actual use, although the protection device is increased, but its own buffering effect is not ideal, it is easy to cause hard contact when impact occurs, thereby affecting the loading machine big box, and the protection device itself does not have the function of alarm, it is difficult to make prompt before impact, for this purpose, we propose a kind of loading machine rear protection device. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of loading machine rear protection device to solve the problem in the background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of loading machine rear protection device, including mounting seat, contraction column, buffer spring and buffer cylinder, the one side of mounting seat both ends is provided with buffer groove, the inside of buffer groove is slidably provided with contraction column, the outer end of contraction column is installed with protection plate, one end of contraction column fixedly installed with buffer spring in the inside of buffer groove, the other end of buffer spring is fixedly connected with the inner wall of buffer groove, the inside of buffer spring is provided with buffer cylinder, the inside of buffer cylinder is slidably provided with pressure rod, one end of pressure rod is fixedly connected with contraction column, one end of pressure rod fixedly installed with piston in the inside of buffer cylinder, the inside of buffer cylinder is provided with cavity, the piston is slidably and sealingly connected with the inner wall of cavity, the bottom end of buffer cylinder one side is provided with the small-diameter air hole that is communicated with outside, the air hole is communicated to the inside of cavity.

[0007] Preferably, high-frequency laser ranging sensors are embedded in the two ends and the middle of the side surface of the protective plate away from the retractable column, and an audible and light alarm is fixedly installed on the top of the protective plate.

[0008] Preferably, limit blocks are arranged on the top and the bottom of the end of the retractable column close to the buffer spring, and the limit blocks are fixedly connected with the retractable column by welding.

[0009] Preferably, limit grooves are arranged in the top wall and the bottom of the buffer groove, and the limit blocks extend into the limit grooves and are limitingly and slidably connected with the inner walls of the limit grooves.

[0010] Preferably, a reflective strip is pasted on the side surface of the protective plate away from the retractable column by gluing.

[0011] Preferably, a rectangular groove is arranged in the middle of one side of the mounting seat, and mounting screw holes are arranged in the rectangular groove.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1. The retractable column with a protective plate is arranged on one side of the mounting seat, and the buffer cylinder in the buffer groove and the buffer spring are cooperated, so that when impacted, the impact force of the anti-skid plate is applied to the buffer spring and the pressure rod, thereby driving the piston to move, cooperating with the air holes arranged in the cavity, utilizing the change of air pressure in the cavity to achieve the effect of buffering, cooperating with the buffer spring to reduce the influence caused by collision, thereby achieving the function of protection.

[0014] 2. The high-frequency laser ranging sensors are embedded in the side surface of the protective plate, and the audible and light alarm is cooperated to give a warning before collision, so that when the distance between the protective plate and the external object exceeds the set value (such as one meter or half a meter), the audible and light alarm is sounded to remind the driver to keep a distance, thereby achieving the purpose of reducing the probability of collision. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the utility model;

[0016] Figure 2 It is an internal structure schematic view of the buffer groove of the utility model;

[0017] Figure 3 It is a structure schematic view of the retractable column of the utility model;

[0018] Figure 4 It is an internal structure schematic view of the buffer cylinder of the utility model.

[0019] In the figure: 1, mounting seat; 2, rectangular groove; 3, mounting screw hole; 4, buffer groove; 5, limiting groove; 6, contraction column; 7, protective plate; 8, high-frequency laser ranging sensor; 9, audible and visual alarm; 10, limiting block; 11, buffer spring; 12, buffer cylinder; 13, pressure rod; 14, piston; 15, cavity; 16, air hole; 17, reflective strip. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Please refer to Figures 1-4 The utility model provides a kind of loader rear protective device technical scheme: including mounting seat 1, contraction column 6, buffer spring 11 and buffer cylinder 12, the side of mounting seat 1 both ends are equipped with buffer groove 4, buffer groove 4 is slidably arranged with contraction column 6 in its inside, the outer end of contraction column 6 is equipped with protective plate 7, one end of contraction column 6 extending to the inside of buffer groove 4 is fixedly installed with buffer spring 11, the other end of buffer spring 11 is fixedly connected with the inner wall of buffer groove 4, buffer cylinder 12 is arranged in the inside of buffer spring 11, pressure rod 13 is slidably arranged in the inside of buffer cylinder 12, one end of pressure rod 13 is fixedly connected with contraction column 6, one end of pressure rod 13 extending to the inside of buffer cylinder 12 is fixedly installed with piston 14, cavity 15 is equipped in the inside of buffer cylinder 12, piston 14 is slidably and sealingly connected with the inner wall of cavity 15, the bottom end of buffer cylinder 12 is equipped with the air hole 16 of smaller diameter communicated with outside on one side, air hole 16 is communicated to the inside of cavity 15.

[0022] Specifically, high-frequency laser ranging sensor 8 is fixedly embedded on the surface of the side of protective plate 7 away from contraction column 6 both ends and middle part, and audible and visual alarm 9 is fixedly installed on the top of protective plate 7.

[0023] Specifically, limiting block 10 is arranged on the top of one end of contraction column 6 close to buffer spring 11 and the bottom, and limiting block 10 is fixedly connected with contraction column 6 by welding.

[0024] Specifically, limiting groove 5 is equipped in the top wall and bottom surface of the inside of buffer groove 4, and limiting block 10 extends to the inside of limiting groove 5 and is limitingly and slidably connected with the inner wall thereof.

[0025] Specifically, reflective strip 17 is pasted on the surface of the side of protective plate 7 away from contraction column 6 by gluing.

[0026] Specific, the middle part of one side of the mounting seat 1 is provided with a rectangular slot 2, the rectangular slot 2 is provided with mounting screw hole 3.

[0027] In the embodiment, in use, the mounting seat 1 is mounted on the rear anti-collision device of the loader through the mounting screw hole 3 in the rectangular slot 2 and the mounting bolt, so as to realize the protection function. The distance detection is realized through the high-frequency laser ranging sensor 8 embedded on the protection plate 7. When the distance between the protection plate 7 and the external object exceeds the set value, such as one meter or half a meter, the audible and visual alarm 9 sends out audible and visual alarm, so as to remind the driver, so as to reduce the probability of collision. When the collision occurs, the protection plate 7 is impacted, the retractable column 6 is pushed to retract into the buffer slot 4, and the buffer spring 11 is compressed. At the same time, the retractable column 6 pushes the pressing rod 13 to move into the cavity 15 of the buffer cylinder 12, so as to push the piston 14 to move to one end of the cavity 15, and extrude the air in the cavity 15. Since the end of the cavity 15 is provided with a small-diameter air hole 16, the air in the cavity 15 is compressed, the air pressure is increased, and the movement of the piston 14 is resisted. The air is slowly discharged through the air hole 16, so as to slow down the movement of the piston 14. Such design can utilize the change of air pressure in the cavity 15 to achieve the buffering effect when the collision occurs, and the buffer spring 11 is matched to reduce the impact caused by the collision, so as to realize the protection function.

[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A rear guard for a loader comprising a mounting bracket (1), a retraction column (6), a buffer spring (11) and a buffer cylinder (12), characterised in that: The mounting seat (1) is provided with a buffer groove (4) at both ends of one side, a contraction column (6) is slidably arranged in the buffer groove (4), a protective plate (7) is installed at the outer end of the contraction column (6), a buffer spring (11) is fixedly installed at one end of the contraction column (6) extending into the buffer groove (4), the other end of the buffer spring (11) is fixedly connected with the inner wall of the buffer groove (4), a buffer cylinder (12) is arranged in the buffer spring (11), a pressure rod (13) is slidably arranged in the buffer cylinder (12), one end of the pressure rod (13) is fixedly connected with the contraction column (6), a piston (14) is fixedly installed at one end of the pressure rod (13) extending into the buffer cylinder (12), a cavity (15) is formed in the buffer cylinder (12), the piston (14) is slidably and sealingly connected with the inner wall of the cavity (15), a small-diameter air hole (16) communicating with the outside is formed in the bottom side of the buffer cylinder (12), and the air hole (16) communicates with the inside of the cavity (15).

2. A rear guard for a loader as defined in claim 1, characterized in that The surface of the protective plate (7) away from the contraction column (6) is fixedly embedded with a high-frequency laser ranging sensor (8) at both ends and the middle.

3. A rear guard for a loader as set forth in claim 1, characterized in that: The top and bottom of one end of the contraction column (6) close to the buffer spring (11) are provided with limit blocks (10), and the limit blocks (10) are fixedly connected with the contraction column (6) by welding.

4. A rear guard for a loader as defined in claim 3, characterized in that: The top wall and the bottom surface of the buffer groove (4) are provided with limit grooves (5), the limit blocks (10) extend into the limit grooves (5) and are limitingly and slidably connected with the inner walls of the limit grooves (5).

5. A rear guard for a loader as set forth in claim 1, characterized in that: The surface of the protective plate (7) away from the contraction column (6) is pasted with a reflective strip (17) by gluing.

6. A rear guard for a loader as set forth in claim 1, characterized in that: A rectangular groove (2) is formed in the middle of one side of the mounting seat (1), and a mounting screw hole (3) is arranged in the rectangular groove (2).

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