Battery box support structure of electric loader

Abstract

The utility model discloses a battery box bracket structure of an electric loader, the battery box bracket is divided into an upper layer and a lower layer, the lower layer comprises two groups of first brackets and second brackets which are bilaterally symmetrical and are stacked up and down, and the upper layer comprises a third bracket arranged above the first bracket and a fourth bracket stacked above the third bracket; the first support and the second support are installed in the rear frame in a sunken mode, and batteries are installed in the first support, the second support, the third support and the fourth support. And the direction of the batteries mounted on the upper layer is perpendicular to that of the batteries mounted on the lower layer. According to the utility model, the battery arrangement scheme is optimized, so that the whole height can be still lower than that of the arrangement scheme in the prior art while the number of the batteries is increased, the continuous operation time of the machine can be prolonged, the application range of the machine is enlarged, and the competitiveness of the product is improved; the reduction of the arrangement height of the battery box support can improve the rear view of a driver and improve the operation safety and the operation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to a battery box bracket structure for an electric loader. Background Technology

[0002] In existing construction machinery, the rear frame of the vehicle is approximately 200mm high, and the space beneath it is unusable, forcing the power battery to be placed on top of the rear frame. Furthermore, the current power battery arrangement consists of four layers, with two batteries per layer (vertically arranged side-by-side), mounted on brackets, for a total of eight batteries. This arrangement is inefficient in utilizing space, and the brackets and batteries occupy a significant amount of space, resulting in a high rear of the machine and low ground clearance. This severely impairs the driver's rearward visibility, consequently affecting operational safety and efficiency, and increasing the risk of rear-end collisions with obstacles.

[0003] Furthermore, the inability to utilize the tail frame itself and its lower space limits the number of batteries that can be installed in the machine, thus restricting the machine's continuous operating time, limiting the product's scope of application, and reducing its competitiveness.

[0004] In addition, the battery terminals are all facing the front of the machine and are close to other systems in the machine, which increases the difficulty of battery wiring, connection and maintenance. Utility Model Content

[0005] The purpose of this utility model is to provide a battery box support structure for an electric loader, solve the problems existing in the prior art, optimize the battery arrangement scheme, increase the number of batteries while reducing the arrangement height, thereby extending the machine's operating time, improving the driver's rear view, improving operating safety and efficiency, and facilitating battery installation, maintenance and repair.

[0006] To achieve the above objectives, the solution of this utility model is:

[0007] A battery box bracket structure for an electric loader, comprising upper and lower layers. The lower layer includes two sets of first and second brackets stacked vertically and symmetrically arranged. The upper layer includes a third bracket positioned above the first bracket and a fourth bracket stacked above the third bracket. The first and second brackets are recessed and installed within the rear frame, and batteries are installed within each of the first, second, third, and fourth brackets. The direction of the batteries installed on the upper layer is perpendicular to the direction of the batteries installed on the lower layer.

[0008] The batteries in the first and second brackets are arranged laterally along the rear frame, while the batteries in the third and fourth brackets are arranged longitudinally along the rear frame.

[0009] The battery terminals in the first and second brackets are located on the left and right sides of the machine, while the battery terminals and connectors in the third and fourth brackets are located on the rear side of the machine.

[0010] The first bracket has a pair of first locking feet at both the front and rear; the third bracket has a pair of second locking feet at the front and a third locking foot on each of its left and right sides; the first locking feet, second locking feet and third locking feet are staggered on the horizontal projection plane of the rear frame and are all locked to the rear frame.

[0011] Preferably, the distance between the pair of first locking feet at the front of the first bracket is smaller than the distance between the pair of first locking feet at the rear; the distance between the second locking feet of the third bracket is smaller than the distance between its third locking feet.

[0012] Preferably, the first locking foot, the second locking foot, and the third locking foot are all plates with a U-shaped cross-section, and are fixedly connected to the side of the corresponding bracket by welding.

[0013] Preferably, the first bracket and the rear frame, the second bracket and the first bracket, the third bracket and the rear frame, and the fourth bracket and the third bracket are all locked together by threaded connectors; shock-absorbing pads are provided between the first locking foot, the second locking foot and the third locking foot and the rear frame.

[0014] A first connecting plate connects the front and rear walls inside the third bracket, dividing the third bracket into two slot-shaped structures for installing batteries. A steel pipe connects the third locking feet, and the steel pipe is integrally connected to the first connecting plate. A second connecting plate connects the front and rear walls inside the fourth bracket, dividing the fourth bracket into two slot-shaped structures for installing batteries.

[0015] The battery box bracket also includes a fifth bracket, which is stacked on top of the fourth bracket. The height of the fifth bracket is lower than that of the fourth bracket, and two batteries are installed side by side in the fifth bracket.

[0016] The bottom walls of the first, second, third, and fourth supports are each provided with several weight-reducing holes; the left and right walls of the first, second, third, and fourth supports are each provided with several maintenance windows.

[0017] After adopting the above technical solution, the present invention has the following technical effects:

[0018] This invention optimizes the battery arrangement, allowing for an increase in the number of batteries while maintaining a significantly lower overall height than existing arrangements. This greatly extends the machine's continuous operating time, expands its application range, and enhances product competitiveness. Furthermore, the reduced height of the battery box bracket improves the driver's rear visibility, enhances operational safety, and increases work efficiency. In addition, the outward and rearward orientation of the battery terminals facilitates battery installation, maintenance, and repair. Attached Figure Description

[0019] Figure 1 This is a perspective view of the rear frame of a specific embodiment of the present utility model;

[0020] Figure 2 This is a perspective view of the tail box of a specific embodiment of the present utility model;

[0021] Figure 3 This is a perspective view of the tail box and battery box bracket of a specific embodiment of the present utility model;

[0022] Figure 4 This is a perspective view of the battery box bracket according to a specific embodiment of the present utility model;

[0023] Figure 5 This is a perspective view of the first bracket according to a specific embodiment of the present utility model;

[0024] Figure 6 This is a perspective view of the second bracket according to a specific embodiment of the present utility model;

[0025] Figure 7 This is a perspective view of the third bracket according to a specific embodiment of the present utility model;

[0026] Figure 8 This is a perspective view of the fourth bracket according to a specific embodiment of the present utility model;

[0027] Figure 9 This is a perspective view of the fifth bracket according to a specific embodiment of the present utility model;

[0028] Explanation of icon numbers:

[0029] 1-Tail box; 11-Mounting slot; 12-Reinforcing plate; 13-Protrusion; 14-Installation and maintenance port; 15-Movable cover; 16-Rear beam; 161-Rear upper support; 17-Traction pin; 18-Front beam; 181-Front upper support; 182-Front lower support; 19-Support beam; 191-Rear lower support;

[0030] 2-Battery box bracket; 21-First bracket; 211-First locking foot; 212-Weight reduction hole; 213-Maintenance window; 22-Second bracket; 221-Weight reduction hole; 222-Maintenance window; 23-Third bracket; 231-Second locking foot; 232-Third locking foot; 233-First connecting plate; 234-First steel pipe; 235-Weight reduction hole; 236-Maintenance window; 24-Fourth bracket; 241-Second connecting plate; 242-Weight reduction hole; 243-Maintenance window; 25-Fifth bracket; 251-Third connecting plate; 252-Weight reduction hole;

[0031] 3-Shock-absorbing pads;

[0032] 4-Front structure;

[0033] a-battery. Detailed Implementation

[0034] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0035] refer to Figure 1-2 As shown, this utility model discloses a rear frame structure for an electric loader, including a rear box 1 and a front structure 4.

[0036] The rear box 1 is the rear of the rear frame, which is two relatively independent parts from the front structure 4 of the rear frame. Both the front and rear have sufficient strength and rigidity, and can be machined separately and then welded into the rear frame assembly without further machining (of course, in some cases the two can also be welded together and then machined, which has more processing flexibility).

[0037] The upper surface of the rear box 1 is provided with a mounting groove 11 for the recessed mounting of the battery box bracket 2;

[0038] A reinforcing plate 12 is provided at the symmetrical center of the mounting groove 11 in the left and right directions. The front and rear ends of the reinforcing plate 12 are integrally connected to the front and rear walls of the mounting groove 11.

[0039] Through the above-described solution, the battery box bracket 2 of the electric loader can be installed in a recessed manner by using the mounting groove 11 on the upper surface of the rear box 1. Utilizing the space of the rear frame counterweight and main beam in existing technologies, the battery placement space is significantly increased. This increases the battery placement space, reduces the placement height of the battery box bracket 2, and consequently lowers the rear height of the machine, solving the problem of severely insufficient rear visibility for the driver. This improves the machine's operating efficiency and safety, and also reduces the probability of damage to the rear of the machine due to collisions. Furthermore, since the battery is centrally located at the rear of the machine, no additional counterweight is needed, or only a smaller and lighter counterweight is required to achieve a smaller overall machine weight while maintaining comparable performance, saving manufacturing costs and operating expenses. Cost; Due to the ability to accommodate more batteries (from 8 to 10), this invention can significantly extend the continuous operating time of the machine, expand its application range, and improve product competitiveness; By setting the reinforcing plate in the mounting slot 11, the strength of the rear box 1 can be strengthened, so that the rear box 1 can not only bear the weight of the battery a and the bracket, but also withstand greater traction force; The rear box 1 is only the rear half of the rear frame, and can be machined separately from the front structure 4 of the rear frame and then welded into the rear frame assembly without causing large deformation. It does not require post-weld machining. This structure does not require large machining equipment, and the separate processing of the front and rear parts can also speed up the production pace.

[0040] The following are specific embodiments of the present invention.

[0041] Compared to the rear box 1 mentioned above, which is mainly used to install battery a, the front structure 4 integrates the installation structure of the electric loader's electrical system, transmission system, hydraulic system, braking system, cab and other systems.

[0042] The front wall of the aforementioned mounting groove 11 is provided with a protrusion 13, which extends the front of the rear box 1 forward to form a protruding structure integrally formed with it, so that the rear box 1 can be arranged forward as a whole, closer to the rear axle tire, reducing the rear overhang length and rear frame length of the machine, and also reducing the overall length of the product. At the same time, it can increase the rear departure angle of the product and further improve the driver's rear visibility. The front end of the reinforcing plate 12 is integrally connected to the inner wall of the protrusion 13. In addition, when the rear box 1 and the front structure 4 are welded together, the protrusion 13 can ensure the strength and rigidity between the rear box 1 and the front structure 4, while ensuring that the rear box 1 can withstand the required traction force.

[0043] The mounting slot 11 is provided with several support parts for the upper and lower battery brackets. The support parts of the upper and lower battery brackets are staggered on the horizontal projection plane. Among the support parts of each battery bracket, the spacing of the front support parts is smaller than the spacing of the rear support parts.

[0044] The mounting slot 11 is provided with a mounting and maintenance port 14 on both the left and right walls to facilitate the installation and maintenance of battery lines; the mounting and maintenance port 14 is provided with an openable and closable cover 15.

[0045] A rear beam 16 is provided at the top of the rear wall of the aforementioned mounting groove 11. The two ends of the rear beam 16 are integrally connected to the left and right walls of the mounting groove 11, and a traction pin 17 is provided inside it. Since the tail box 1 itself has a recessed mounting groove 11, it forms a box-shaped traction structure with the rear beam 16, which can better bear the traction force of the whole machine and can also act as a collision protection beam.

[0046] This utility model also includes a battery box bracket 2; see [link] Figure 3-9 The battery box bracket 2 is divided into upper and lower layers. The lower layer includes two sets of first brackets 21 and second brackets 22 arranged symmetrically on the left and right, stacked vertically. The upper layer includes a third bracket 23 located above the first bracket 21 and a fourth bracket 24 stacked above the third bracket 23. The first brackets 21 and second brackets 22 are both located in the mounting slots 11 of the rear housing 1, and each of the first brackets 21 and second brackets 22 installs one battery a. The third brackets 23 and fourth brackets 24 each install two batteries a side by side. The direction of the batteries installed on the upper layer is perpendicular to the direction of the batteries installed on the lower layer. This arrangement increases the number of batteries a while maintaining a significantly lower height than existing arrangements (approximately 240mm), which can greatly extend the machine's continuous operating time, increase the machine's application range, and improve the product's competitiveness. Furthermore, the reduced height of the battery box bracket 2 can improve the driver's rear visibility, enhance operational safety, and improve operational efficiency.

[0047] In some embodiments of the battery box bracket 2, the batteries a in the first bracket 21 and the second bracket 22 are arranged laterally along the rear frame, and the batteries a in the third bracket 23 and the fourth bracket 24 are arranged longitudinally along the rear frame.

[0048] In some embodiments of the battery box bracket 2, the battery terminals in the first bracket 21 and the second bracket 22 of the lower layer of the battery box bracket are located on the left and right sides (outer sides) of the machine, while the battery terminals and connectors in the third bracket 23, the fourth bracket 24 and the fifth bracket 25 (see below) of the upper layer are located on the rear side of the machine, which facilitates the installation, maintenance and repair of the battery.

[0049] In some embodiments of the battery box bracket 2, the first bracket 21 has a pair of first locking feet 211 at both the front and rear; the third bracket 23 has a pair of second locking feet 231 at the front and a third locking foot 232 on each of its left and right sides; the first locking feet 211, second locking feet 231, and third locking feet 232 are staggered on the horizontal projection plane of the rear frame and are all locked onto the rear box 1 for easy installation. In this embodiment, the distance between the pair of first locking feet 211 at the front of the first bracket 21 is smaller than the distance between the pair of first locking feet 211 at the rear; the distance between the second locking feet 231 of the third bracket 23 is smaller than the distance between its third locking feet 232. In this embodiment, the first locking feet 211, second locking feet 231, and third locking feet 232 are all U-shaped plates, integrally formed by welding on the side of the corresponding bracket to ensure the strength and rigidity of the locking feet.

[0050] Furthermore, a rear beam 16 is provided at the top of the rear wall of the aforementioned mounting groove 11, and two upper rear support portions 161 are provided on the front side of the rear beam 16. A front beam 18 is provided at the top of the front wall of the mounting groove 11, and two upper front support portions 181 and four lower front support portions 182 are provided on the front beam 18. A support beam 19 is provided above the rear part of the mounting groove 11, and four lower rear support portions 191 are provided on the support beam 19. The first locking feet 211 at the front and rear of the first bracket 21 are respectively locked to the lower front support portions 182 and the lower rear support portions 191 by threaded connectors. The second locking feet 231 of the third bracket 23 are locked to the upper front support portion 181 by threaded connectors, and the third locking feet 232 are locked to the upper rear support portion 161 by threaded connectors. The second bracket 22 is locked below the first bracket 21 by threaded connectors. The fourth bracket 24 is locked above the third bracket 23 by threaded connectors.

[0051] Secondly, shock-absorbing pads 3 are provided between the first locking foot 211, the second locking foot 231 and the third locking foot 232 and their corresponding support parts to buffer the vibrations generated during machine operation.

[0052] Meanwhile, a first connecting plate 233 is connected between the front and rear walls inside the third bracket 23. The first connecting plate 233 divides the third bracket 23 into two slot-shaped structures for installing batteries a. A first steel pipe 234 is connected between the third locking feet 232. The first steel pipe 234 is integrally connected with the first connecting plate 233 to reinforce the third bracket 23 and meet the installation requirements of batteries a. Similarly, a second connecting plate 241 is connected between the front and rear walls inside the fourth bracket 24. The second connecting plate 241 divides the fourth bracket 24 into two slot-shaped structures for installing batteries a.

[0053] Furthermore, the aforementioned battery box bracket 2 also includes a fifth bracket 25, which is stacked above the fourth bracket 24. The height of the fifth bracket 25 is lower than that of the fourth bracket 24, and a third connecting plate 251 connects the front and rear walls of the fifth bracket 25. The third connecting plate 251 divides the fifth bracket 25 into two slot-like structures for installing batteries a, so that two batteries a can be installed side by side. The lower height of the fifth bracket 25 increases the number of batteries a in the machine while minimizing the increase in the rear height of the machine cover, significantly improving the situation of obstructed rear view. With the addition of the fifth bracket 25, the machine can accommodate more batteries (from 8 to 10), significantly extending the continuous operating time of the machine, expanding the applicable range of the machine, and improving product competitiveness. In addition, when the number of batteries required is small (e.g., only 8 are needed), the fourth bracket 24 can be omitted, and the fifth bracket 25 can be directly locked onto the third bracket 23, that is, using a lower fifth bracket 25 to further reduce the rear height of the machine.

[0054] Finally, the bottom walls inside the first bracket 21, the second bracket 22, the third bracket 23, the fourth bracket 24 and the fifth bracket 25 are respectively provided with a number of weight-reducing holes 212, 221, 235, 242 and 252, which can reduce the weight of each bracket; except for the fifth bracket 25, the side walls of each bracket are respectively provided with a number of maintenance windows 213, 222, 236 and 243, which can be used for battery installation and maintenance.

[0055] In this embodiment, the shape and structure of each bracket are as follows:

[0056] (1) The first bracket 21 mentioned above is mainly composed of a base plate, two U-shaped plates, an outer reinforcing plate, a base plate reinforcing rib, and four supporting structures (i.e., four first locking feet 211), which can accommodate one battery. The base plate and the two U-shaped plates have bending structures. Such a welded structure has sufficient strength and rigidity to meet the battery installation requirements, and there are fewer welds, which can reduce processing costs and welding deformation. There is a large space on one side of the outer reinforcing plate for the battery wiring and pipeline layout. The base plate has two large weight-reducing holes to reduce the weight of the bracket, and each of the two side U-shaped plates has three holes for mounting bolts and maintenance.

[0057] (2) The aforementioned second bracket 22 mainly consists of a base plate, two L-shaped plates, an outer reinforcing plate, and a base plate reinforcing rib, and can accommodate one battery. The base plate and the two L-shaped plates have bending structures. Such a welded structure has sufficient strength and rigidity to meet the battery installation requirements, and has fewer welds, which can reduce processing costs and welding deformation. There is a large space on one side of the outer reinforcing plate for the arrangement of power battery lines and pipelines. The base plate has two large weight-reducing holes to reduce the weight of the bracket, and each of the two L-shaped plates has three holes for mounting bolts and maintenance.

[0058] (3) The aforementioned third bracket 23 mainly consists of a base plate, two side U-shaped plates, a first connecting plate 233, a steel pipe, base plate reinforcing ribs, and four supporting structures (i.e., second locking feet 231 and second locking feet 232). The base plate and side U-shaped plates each have two bends. The first connecting plate 233 divides the third bracket into two parts for installing two batteries. The steel pipe connects the two second locking feet 232 together and connects to the first connecting plate 233. This welded structure has sufficient strength and rigidity to meet the battery installation requirements, and has fewer welds, which can reduce processing costs and welding deformation. The rear side of the third bracket 23 has a relatively large space for the battery wiring and piping layout. The base plate has four large weight-reducing holes to reduce the weight of the bracket, and each of the two side U-shaped plates has three holes for installing bolts and maintenance.

[0059] (4) The aforementioned fourth bracket 24 mainly consists of a base plate, two side U-shaped plates, a second connecting plate 241, a rear U-shaped plate, and base plate reinforcing ribs. The base plate, side U-shaped plates, and rear U-shaped plates each have two bends. The second connecting plate 241 divides the fourth bracket 24 into two parts for installing two batteries. The rear U-shaped plate connects the side U-shaped plates together and is connected to the second connecting plate 241. This welded structure has sufficient strength and rigidity to meet the battery installation requirements, and has fewer welds, which can reduce processing costs and welding deformation. The rear side of the fourth bracket 24 has a relatively large space for the battery wiring and piping layout. The base plate has four large weight-reducing holes to reduce the weight of the bracket, and the two U-shaped plates and the rear U-shaped plate have holes for mounting bolts and maintenance.

[0060] (5) The fifth bracket 25 mentioned above is mainly composed of a base plate, two side U-shaped plates, a middle reinforcing plate, steel pipes, and base plate reinforcing ribs. The base plate and the side U-shaped plates each have two bends. The middle reinforcing plate divides the bracket into two parts for installing two batteries. The steel pipes connect the side U-shaped plates together and connect them to the middle reinforcing plate. This welded structure has sufficient strength and rigidity to meet the battery installation requirements. Moreover, there are fewer welds, which can reduce processing costs and welding deformation. A relatively large space is left on the rear side of the bracket for the arrangement of battery wiring and pipelines. The base plate has four large weight-reducing holes to reduce the weight of the bracket. The two side U-shaped plates have holes for mounting bolts and maintenance. In addition, the height of the fifth bracket 25 is relatively small, which is conducive to further reducing the height of the machine tail and improving the rear view.

[0061] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A battery box support structure for an electric loader, characterized in that: The battery box bracket is divided into upper and lower layers. The lower layer includes two sets of first and second brackets arranged symmetrically on the left and right, stacked one on top of the other. The upper layer includes a third bracket disposed above the first bracket and a fourth bracket stacked above the third bracket. The first and second brackets are both recessed and installed in the rear frame, and batteries are installed in the first, second, third, and fourth brackets. The direction of the battery installed in the upper layer is perpendicular to the direction of the battery installed in the lower layer.

2. The battery box bracket structure of the electric loader as described in claim 1, characterized in that: The batteries in the first and second brackets are arranged laterally along the rear frame, while the batteries in the third and fourth brackets are arranged longitudinally along the rear frame.

3. The battery box bracket structure of the electric loader as described in claim 1, characterized in that: The battery terminals in the first and second brackets are located on the left and right sides of the machine, while the battery terminals in the third and fourth brackets are located on the rear side of the machine.

4. The battery box bracket structure of the electric loader as described in claim 1, characterized in that: The first bracket has a pair of first locking feet at both the front and rear; the third bracket has a pair of second locking feet at the front and a third locking foot on each of its left and right sides; the first locking feet, second locking feet and third locking feet are staggered on the horizontal projection plane of the rear frame and are all locked to the rear frame.

5. The battery box bracket structure of the electric loader as described in claim 4, characterized in that: The distance between the first pair of first locking feet in front of the first bracket is smaller than the distance between the first pair of first locking feet behind it; the distance between the second locking feet of the third bracket is smaller than the distance between its third locking feet.

6. The battery box bracket structure of the electric loader as described in claim 4, characterized in that: The first locking foot, the second locking foot, and the third locking foot are all plates with a U-shaped cross-section and are fixedly connected to the side of the corresponding bracket by welding.

7. The battery box bracket structure of the electric loader as described in claim 4, characterized in that: The first bracket and the rear frame, the second bracket and the first bracket, the third bracket and the rear frame, and the fourth bracket and the third bracket are all locked together by threaded connectors. Shock-absorbing pads are installed between the first locking foot, the second locking foot and the third locking foot and the rear frame.

8. The battery box bracket structure of the electric loader as described in claim 4, characterized in that: A first connecting plate is connected between the front and rear walls inside the third bracket, and the first connecting plate divides the third bracket into two slot-shaped structures for installing batteries. A first steel pipe is connected between the third locking feet, and the first steel pipe is integrally connected to the first connecting plate. A second connecting plate is connected between the front and rear walls inside the fourth bracket, and the second connecting plate divides the fourth bracket into two slot-shaped structures for installing batteries.

9. The battery box bracket structure of the electric loader as described in claim 1, characterized in that: The battery box bracket also includes a fifth bracket, which is stacked on top of the fourth bracket. The height of the fifth bracket is lower than that of the fourth bracket, and two batteries are installed side by side in the fifth bracket.

10. The battery box bracket structure of the electric loader as described in claim 1, characterized in that: The bottom walls of the first, second, third, and fourth supports are each provided with several weight-reducing holes; the left and right walls of the first, second, third, and fourth supports are each provided with several maintenance windows.

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