Parking wedge fixing device

By designing a parking wedge fixing device on the front frame of a small electric loader, using a check pin and an anti-lost rope assembly to fix the parking wedge, and combining it with a shock-absorbing sponge to absorb vibration, the stability problem of the parking wedge in a limited space is solved, achieving improved stability and safety.

CN223410215UActive Publication Date: 2025-10-03QINGDAO LOVOL EXCAVATOR
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Patent Information

Application Number
CN202422947254.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-29
Publication Date
2025-10-03
Estimated Expiration
2034-11-29

AI Technical Summary

Technical Problem

The parking wedge fixing device of a small electric loader is not stable enough in a limited space and cannot be placed on the rear frame. It is also easy to shake and get lost during vehicle operation.

Method used

A parking wedge fixing device is designed, which includes a parking wedge fixing frame, a backstop pin shaft, an anti-lost rope assembly and a shock-absorbing sponge. The device is connected to the front frame of the loader through fixing bolts. The backstop pin shaft and the anti-lost rope assembly are used to fix the parking wedge, and the shock-absorbing sponge absorbs vibration to ensure that the parking wedge does not move or get lost during vehicle bumps.

Benefits of technology

It improves the stability and safety of the parking wedge, prevents shaking and loss, reduces noise, simplifies the installation and replacement process, does not occupy the rear frame space, and adapts to the design requirements of electric loaders.

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Abstract

The utility model relates to the technical field of loader parts, and provides a parking wedge fixing device. Comprising a parking wedge fixing frame and a backstop pin shaft. The parking wedge fixing frame is used for placing and fixing a parking wedge and comprises a fixing plate, a side top plate, a stop plate and a connecting rod. The slopes are fixedly connected to the tops of the fixing plates on the two sides respectively, and the positions close to the slopes are connected with the side top plates on the two sides through connecting rods; through holes are symmetrically formed in the other ends of the two side top plates; inclined planes at two ends of the stop plate are fixed on the lower side of the fixed plate, two ends of the stop plate are connected by the connecting rod close to the inclined planes, and the stop plate and the connecting rod form an inclined rectangular container-shaped space for fixing the narrower end of the parking wedge; the backstop pin shaft is of an L-shaped geometrical structure, penetrates through the through holes in the two ends of the side top plates on the two sides and is used for abutting against the upper end of the placed parking wedge. According to the utility model, the parking wedge is stably fixed through the cooperation of the anti-lost rope assembly, the non-return device pin shaft, the stop plate and the connecting rod.
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Description

Technical Field

[0001] The utility model relates to the technical field of loader parts, in particular to a parking wedge fixing device. Background Art

[0002] The purpose of parking wedges is to ensure that the loader is stably fixed to the ground when parked, preventing it from accidentally sliding on slopes or other uneven surfaces. In traditional small loader designs, parking wedges are usually placed on the rear frame. This layout is relatively simple and easy to manage during operation.

[0003] However, with the rapid development of electric loader technology and increasing environmental protection requirements, small electric loaders are gradually replacing traditional small loaders. The design of these small electric loaders requires consideration of battery pack layout, motor position, and overall weight distribution. This results in limited space in the rear frame, making it unsuitable for parking wedges. Furthermore, the parking wedges often do not fit tightly in the fixture, causing them to wobble during vehicle operation due to bumps, turns, and sudden stops, compromising their stability.

[0004] To accommodate these new design requirements, the layout and design of parking wedges needed to be reconsidered to ensure they could function effectively within the limited space. This involved redesigning the shape of the parking wedges and placing them in more suitable locations to ensure the small electric loader remained stable when parked and avoid sliding accidents. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a parking wedge fixing device to solve the problems that the existing parking wedge fixing device is insufficiently stable and cannot be placed on the rear frame.

[0006] The solution adopted by this utility model:

[0007] A parking wedge fixing device comprises a parking wedge fixing frame and a backstop pin;

[0008] The parking wedge fixing frame is used to place and fix the parking wedge, and includes a fixing plate, a side top plate, a stop plate and a connecting rod; the side top plates on both sides are trapezoidal and are respectively fixedly connected to the top of the fixing plates on both sides at an angle, and through holes are symmetrically provided at one end of the side top plates away from the fixing plates; the stop plate is composed of two side surfaces and a stop surface, and the two ends of the two side surfaces are fixedly fixed at an angle to the lower sides of the fixing plates on both sides, and the two side surfaces of the stop plate are connected by a connecting rod near the fixing plates; the stop plate and the connecting rod form an inclined rectangular container-shaped space for fixing the narrower end of the parking wedge;

[0009] The anti-return device pin shaft has an "L"-shaped geometric configuration, with a long side and a short side, and through holes are provided at the ends of the long side and the short side; the long side passes through the through holes of the side top plates on both sides, and is used to press against the upper end of the parking wedge after placement.

[0010] Furthermore, the side top plates on both sides are also connected by connecting rods near the fixed plate.

[0011] Furthermore, through holes are provided at the upper and lower ends of the fixing plates on both sides.

[0012] Furthermore, the fixing plate is fixed to the side plate at the pin shaft of the boom cylinder of the front frame of the loader, and is used to support and fix the parking wedge fixing frame, specifically by using fixing bolts to pass through the through holes for fixing.

[0013] Furthermore, the parking wedge fixing device also includes an anti-lost rope assembly; the anti-lost rope assembly consists of a cotter pin and at least two anti-lost ropes, which are used to fix the anti-return device pin shaft on the side top plate.

[0014] Furthermore, a through hole is provided at the end of the cotter pin; one end of the anti-lost rope is a press buckle, and the other end is a ring buckle.

[0015] Furthermore, the opening of the cotter pin passes through a through hole formed on the long side of the anti-return device pin shaft.

[0016] Furthermore, a fixing bolt is used to pass through the pressure buckle to fix one end of the anti-lost rope to the side plate at the pin shaft of the boom cylinder of the front frame of the loader; a ring buckle of the anti-lost rope passes through the through hole opened on the short side of the anti-return device pin shaft, and a ring buckle of the anti-lost rope passes through the through hole at the end of the cotter pin.

[0017] Furthermore, the parking wedge fixing device also includes a shock-absorbing sponge, which is arranged between the side top plate and the stop plate and adhered to the fixing plate.

[0018] Furthermore, the parking wedge fixing frame is made of low-carbon structural steel.

[0019] The beneficial effects of the above utility model are as follows:

[0020] The stop plate and connecting rod of this utility model form an inclined rectangular container-like space. The anti-return pin passes through the through-hole in the side top plate and then presses against the upper end of the placed parking wedge. The buckle of the anti-lost rope is then passed through the through-hole of the anti-return pin and the through-hole of the cotter pin. The anti-lost rope assembly, the anti-return pin, the stop plate, and the connecting rod cooperate to firmly secure the parking wedge, ensuring that it will not move backward or be lost even in the event of a bumpy vehicle.

[0021] The fixing plate of the utility model is connected to the front frame part of the loader by fixing bolts, the stability of the entire device is enhanced, and the rear frame space of the electric loader is not occupied; the fixing method of the fixing bolts makes the installation and replacement of the parking wedge fixing device simple and quick.

[0022] The design of the anti-lost rope assembly of this utility model prevents the anti-return device pin from being lost, maintaining the integrity of the device. The provision of a shock-absorbing sponge reduces the vibration of the parking wedge along with the vehicle frame during vehicle driving and reduces noise, effectively protecting the vehicle and the parking wedge itself.

[0023] Advantages of additional aspects of the present invention will be partially given in the following description, and partially become apparent from the following description, or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0025] Figure 1 This is a left oblique view of the installation of the parking wedge fixing frame in the embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the connection between the anti-lost rope assembly and the anti-return device pin in the embodiment of the present utility model;

[0027] Figure 3 This is a left oblique view of the parking wedge fixing frame after the parking wedge is placed in the embodiment of the utility model;

[0028] Figure 4 This is a right oblique view of the installation of the parking wedge fixing frame in the embodiment of the utility model;

[0029] Figure 5 It is a right oblique view of the parking wedge fixing frame after the parking wedge is placed in the embodiment of the utility model.

[0030] Among them, 1. anti-return pin shaft, 2. anti-lost rope assembly, 3. shock-absorbing sponge, 4. fixing bolt, 5. fixing plate, 6. side top plate, 7. connecting rod, 8. stop plate, 9. buckle, 10. ring buckle, 11. cotter pin, 12. parking wedge. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as commonly understood by those of ordinary skill in the art to which the present invention belongs.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention.

[0033] like Figure 1 As shown, this embodiment provides a parking wedge fixing device, including a parking wedge fixing frame, a check pin 1, a shock-absorbing sponge 3 and an anti-lost rope assembly 2.

[0034] like Figure 3 As shown, the parking wedge mounting bracket is the main structure of the fixture, used to accommodate and secure the parking wedge 12. It includes a fixing plate 5, a side top plate 6, a stop plate 8, and a connecting rod 7. The side top plates 6 are both trapezoidal, with inclined surfaces fixedly connected to the tops of the fixing plates 5 on either side. Connecting rods 7 connect the side top plates 6 near the inclined surfaces, providing better support and facilitating the placement of the parking wedge 12. The inclined surfaces of the stop plate 8 at both ends are fixed to the underside of the fixing plate 5. Connecting rods 7 connect the ends of the stop plate 8 near the inclined surfaces. The stop plate 8 and the connecting rod 7 form an inclined rectangular container-like space for securing the narrower end of the parking wedge 12.

[0035] The trapezoidal side top plate 6 and the inclined rectangular container-shaped space provide good support and stability for the parking wedge 12, ensuring that the parking wedge 12 is firmly fixed and will not move reversely or be lost due to bumps and sliding during vehicle driving.

[0036] The anti-return pin shaft 1 has an "L"-shaped geometric configuration, with a long side and a short side, and through holes are provided at the ends of both sides; through holes are symmetrically provided at the ends of the side top plates 6 away from the connecting rod 7, and the long sides of the anti-return pin shaft 1 pass through the through holes at both ends of the side top plates 6 on both sides, and are used to press against the upper end of the parking wedge 12 after placement.

[0037] This design can prevent the parking wedge 12 from moving in the reverse direction during use, thereby improving the safety and reliability of the device.

[0038] like Figure 2 As shown, the anti-lost rope assembly 2 consists of a cotter pin 11 and at least two anti-lost ropes, which are used to fix the anti-return pin shaft 1 to the side top plate 6. The end of the cotter pin 11 is provided with a through hole; the opening of the cotter pin 11 passes through the through hole opened on the long side of the anti-return pin shaft 1, and the end of the cotter pin 11 is pressed against the through hole.

[0039] In this embodiment, the cotter pin adopts the linear cotter pin of national standard GB / T 91 or the R-type cotter pin of GB / T4329; specific usage:

[0040] GB / T 91 straight cotter pin: insert the two legs of the straight cotter pin into the pin shaft hole of the check valve, bend one leg slightly to prevent the check valve pin shaft from falling out due to bumps, and pull it out directly when removing it.

[0041] GB / T 4329 R-type cotter pin: Insert the straight leg of the R-type cotter pin into the pin shaft hole of the check valve, and the other leg will automatically lock to prevent the check valve pin shaft from falling out due to bumps. It can be pulled out directly when removed.

[0042] One end of each anti-lost rope is a buckle 9, and the other end is a ring buckle 10; the fixing bolt 4 passes through the buckle 9 to fix one end of the anti-lost rope to the side plate at the pin shaft of the boom cylinder of the front frame of the loader.

[0043] In this embodiment, two anti-lost ropes are provided, with the loop 10 of one anti-lost rope passing through the through hole opened on the short side of the anti-return pin shaft 1, and the loop 10 of the other anti-lost rope passing through the through hole at the end of the cotter pin 11. This design can prevent the anti-return pin shaft 1 from being lost and ensure the integrity of the device.

[0044] The design of the anti-return pin 1 and the anti-lost rope assembly 2 effectively prevents the parking wedge 12 from reverse movement and loss during use, thereby improving the safety of the device.

[0045] A shock-absorbing sponge 3 is provided between the side top plate 6 and the stop plate 8 and adhered to the fixing plate 5. The shock-absorbing sponge 3 can absorb vibrations and impacts caused by bumps, turns, sudden stops, etc. during vehicle operation. It also plays a role in preventing the parking wedge 12 from sliding, protecting the parking wedge 12 and the fixing device, and extending the service life.

[0046] Through holes are provided at the upper and lower ends of the fixing plates 5 on both sides, and the fixing plates 5 are fixed to the side plates at the pin shaft of the boom cylinder of the front frame of the loader through the fixing bolts 4 passing through the through holes.

[0047] This fixing method is easy to install and remove, and will not affect the installation of the check pin shaft 1 (after the pin shaft is installed, the parking wedge fixing bracket is installed as an accessory). Since the installation location is on the left side of the front frame of the whole machine, close to the driver's boarding and disembarking area, it does not take up too much space and is convenient for accessing the parking wedge 12. The parking wedge 12 can be removed and greased. This realizes the installation in the limited space of the loader. It is simple and reliable and does not affect the performance and operation of the electric loader.

[0048] The parking wedge fixing frame is made of low-carbon structural steel, specifically Q235B in this embodiment, which has good plasticity, toughness and casting properties and is easy to process and weld.

[0049] In this embodiment, the specific working principle of the parking wedge fixing device is as follows:

[0050] The two anti-lost ropes of the anti-lost rope assembly 2 are respectively connected to the anti-lost rope pin shaft 1 and the cotter pin 11, and are fixed to the front frame using a fixing bolt 4 passing through the anti-lost rope buckle 9. There are two through holes on the anti-lost rope pin shaft 1. The short side through hole is used to connect the anti-lost rope buckle 10, and the long side through hole is used to insert the cotter pin 11.

[0051] When the loader needs to move, the operator removes the cotter pin 11 on the long side of the anti-return pin shaft 1, takes the anti-return pin shaft 1 out of the side top plate 6, and vertically places the narrower end of the parking wedge 12 into the inclined rectangular container-shaped space formed by the stop plate 8 and the connecting rod 7. Then, the long side of the anti-return pin shaft 1 is passed back through the through hole on the side top plate 6, pressed against the upper end of the placed parking wedge 12, and then the cotter pin 11 is inserted into the through hole of the anti-return pin shaft 1. The parking wedge 12 is stably fixed through the cooperation of the anti-lost rope assembly 2, the anti-return pin shaft 1, the stop plate 8 and the connecting rod 7 to ensure that the parking wedge 12 will not move in the opposite direction or be lost even in the case of vehicle bumps.

[0052] When the loader needs to stop, the operator removes the cotter pin on the long side of the anti-return pin shaft 1 again, takes out the anti-return pin shaft 1 from the side top plate 6, lifts the upper end handle of the parking wedge 12 (attached Figure 3 (As shown, remove the parking wedge 12 for use, then insert the long side of the anti-return pin 1 back into the through hole on the side top plate 6, and then insert the cotter pin 11 into the through hole of the anti-return pin 1 to re-secure the anti-return pin 1. Place the parking wedge 12 between the ground and the tire to prevent the tire from sliding.

[0053] Furthermore, because the fixing plate 5 is connected to the side plate at the boom cylinder pin of the loader's front frame via fixing bolts 4, the overall stability of the device is enhanced, without occupying space on the electric loader's rear frame. Furthermore, the material selection of the parking wedge mounting bracket further ensures the device's reliability and safety under various operating conditions. The shock-absorbing sponge 3 attached to the parking wedge mounting bracket reduces vibration and noise caused by the parking wedge 12 caused by the vehicle frame. Through these designs, the parking wedge mounting bracket effectively prevents the parking wedge 12 from shaking and affecting its stability due to bumps, turns, and sudden stops.

[0054] Although the above description of the specific implementation methods of the present invention is combined with the accompanying drawings, it does not limit the scope of protection of the present invention. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present invention, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present invention.

Claims

1. A parking wedge fixing device, characterized in that: Includes parking wedge fixing bracket and check pin; The parking wedge fixing frame is used to place and fix the parking wedge, and includes a fixing plate, a side top plate, a stop plate and a connecting rod; the side top plates on both sides are trapezoidal and are respectively fixedly connected to the top of the fixing plates on both sides at an angle, and through holes are symmetrically provided at one end of the side top plates away from the fixing plates; the stop plate is composed of two side surfaces and a stop surface, and the two ends of the two side surfaces are fixedly fixed at an angle to the lower sides of the fixing plates on both sides, and the two side surfaces of the stop plate are connected by a connecting rod near the fixing plates; the stop plate and the connecting rod form an inclined rectangular container-shaped space for fixing the narrower end of the parking wedge; The anti-return device pin shaft has an "L"-shaped geometric configuration, with a long side and a short side, and through holes are provided at the ends of the long side and the short side; the long side passes through the through holes of the side top plates on both sides, and is used to press against the upper end of the parking wedge after placement.

2. A parking wedge fixing device according to claim 1, characterized in that: The side top plates on both sides are also connected by connecting rods near the fixed plate.

3. A parking wedge fixing device according to claim 1, characterized in that: Through holes are provided at the upper and lower ends of the fixing plates on both sides.

4. A parking wedge fixing device according to claim 3, characterized in that: The fixing plate is fixed on the side plate at the pin shaft of the boom cylinder of the front frame of the loader, and is used to support and fix the parking wedge fixing frame, specifically by using fixing bolts to pass through the through holes for fixing.

5. A parking wedge fixing device according to claim 1, characterized in that: The parking wedge fixing device also includes an anti-lost rope assembly; the anti-lost rope assembly consists of a cotter pin and at least two anti-lost ropes, which are used to fix the anti-return device pin shaft on the side top plate.

6. A parking wedge fixing device according to claim 5, characterized in that: A through hole is provided at the end of the cotter pin; one end of the anti-lost rope is a press buckle, and the other end is a ring buckle.

7. A parking wedge fixing device according to claim 6, characterized in that: The opening of the cotter pin passes through the through hole formed on the long side of the anti-return device pin shaft.

8. A parking wedge fixing device according to claim 6, characterized in that: A fixing bolt is passed through the pressure buckle to fix one end of the anti-lost rope on the side plate of the boom cylinder pin shaft of the front frame of the loader; a ring buckle of the anti-lost rope passes through the through hole opened on the short side of the anti-return device pin shaft, and a ring buckle of the anti-lost rope passes through the through hole at the end of the cotter pin.

9. The parking wedge fixing device according to claim 1, wherein: The parking wedge fixing device also includes a shock-absorbing sponge, which is arranged between the side top plate and the stop plate and adhered to the fixing plate.

10. The parking wedge fixing device according to claim 1, wherein: The parking wedge fixing frame is made of low-carbon structural steel material.