Counterweight structure for hybrid power loader, rear counterweight system and loader

Abstract

The utility model provides a balance weight structure for a hybrid power loader, a rear balance weight system and the loader, and belongs to the technical field of loaders. The balance weight structure comprises a balance weight body, and the upper surface of the balance weight body is sunken downwards to form a groove used for being connected with a vehicle frame. The counter weight body is separated by the groove to form a front part and two groups of rear parts; a second mounting opening for accommodating a battery is formed in the bottom of the counterweight body; the plurality of batteries are integrally arranged on the supporting plate, and the supporting plate is detachably connected with the counterweight body. The rear counterweight system comprises the counterweight structure and further comprises a rear frame, a tail plate is arranged at the tail end of the rear frame, the tail of the rear frame can be placed in the groove, and the tail plate can be detachably connected with the front portion. The loader comprises the counterweight structure or the rear counterweight system. The balance weight body is optimally designed, so that the balance weight has the advantages of high maintainability, good stability of the whole machine, convenience in arrangement of the range extender and the like.

Description

Technical Field

[0001] This utility model relates to the field of loader technology, and in particular to a counterweight structure, a rear counterweight system, and a loader for a hybrid loader. Background Technology

[0002] The electrification of construction machinery is developing rapidly. Electric loaders, with their advantages of energy saving, environmental protection, and high efficiency, have prompted some industries to replace traditional fuel-powered loaders with electric loaders. However, electric loaders also have their limitations, among which the purchase cost, range, and power supply are particularly prominent issues. Hybrid loaders combine the superior performance of fuel-powered and electric products, filling the gaps in the adaptability of fuel-powered and electric loaders to different operating conditions.

[0003] Hybrid loaders require the simultaneous installation of range extenders and multiple batteries. How to arrange the batteries within limited space has become a pressing issue. A search revealed existing counterweight structures, such as the utility model patent with application number 2021226559239, which discloses a counterweight for a loader and an electric loader. While it incorporates a battery pack mounting cavity within the counterweight and can accommodate the battery pack, it suffers from a problem: (refer to the attached drawings in its specification). Figure 1 As can be seen from the relevant descriptions in the instruction manual, this design means that when the battery inside the counterweight needs to be removed for maintenance, it cannot be taken out directly. The counterweight must be removed first, followed by the battery pack, which is time-consuming, labor-intensive, inefficient, and has low maintainability. Furthermore, the spatial layout of this technical solution is unreasonable, making it inconvenient to place the range extender. Therefore, optimization and improvement are necessary.

[0004] Furthermore, most existing electric loaders use magnetic charging ports, which present two problems: First, using conventional magnets, which are prone to breakage due to repeated impacts in environments where the loader lid opens and closes. This results in weak impact resistance, fragility, and significant impact noise. Second, the magnets are fixed in place, and factors such as the loader lid's manufacturing precision, installation errors, or deformation after long-term use can make it difficult to achieve an ideal fit between the magnet and the lid. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in related technologies. To this end, this utility model proposes a counterweight structure, a rear counterweight system, and a loader for a hybrid power loader.

[0006] The technical solution to the technical problem solved by this utility model is as follows:

[0007] In a first aspect, this technical solution proposes a counterweight structure for a hybrid loader, including a counterweight body. The upper surface of the counterweight body is recessed downward to form a groove for connection with the vehicle frame. The groove divides the counterweight body into a front part and two sets of rear parts. The two ends of the front part are respectively connected to a set of rear parts, forming an overall U-shaped structure. At least one set of second mounting ports for accommodating batteries is provided at the bottom of the counterweight body. A plurality of batteries are integrated on a support plate, and the support plate is detachably connected to the counterweight body.

[0008] Preferably, the groove is formed by connecting and enclosing an upper sealing plate and a side baffle, and the upper sealing plate and the side baffle are respectively connected to the counterweight body.

[0009] Preferably, a first mounting port is provided on the top surface of one of the rear portions.

[0010] Preferably, a charging port and / or maintenance port are provided on the side of at least one of the rear portions; the charging port is fitted with an openable or closable cover to form an openable and closable structure.

[0011] Preferably, a taillight mounting bracket is formed by an upward bulge at the connection between the front part and the rear part.

[0012] Preferably, the bottom of the counterweight body has an inclined bottom sealing plate.

[0013] Preferably, the front part has a horizontally arranged traction hole, and several through holes arranged horizontally are provided on both sides of the traction hole; the front part also has a vertical pin hole, which is connected to the traction hole.

[0014] Secondly, this technical solution proposes a rear counterweight system, including the counterweight structure for the hybrid loader; it also includes a rear frame, the rear end of which is provided with a tail plate, the rear of which can be inserted into the groove, and the tail plate can be detachably connected to the front part.

[0015] Preferably, the rear frame includes a frame beam, and the top of the frame beam is provided with a first base, a second base, and a third base sequentially from the front end to the rear end; the tail plate has a second through hole adapted to the first through hole, and bolts are inserted in the first and second through holes to bolt and fix the tail plate to the front part; the outer wall of the frame beam is provided with a positioning block, and the inner wall of the rear part has a slot, and the positioning block can be adapted to be inserted into the slot.

[0016] Thirdly, this technical solution also proposes a loader, including the aforementioned counterweight structure for a hybrid loader or the aforementioned rear counterweight system.

[0017] The above technical solution has the following advantages or beneficial effects:

[0018] 1. This utility model optimizes the design of the counterweight body by placing the battery on the lower front side of the counterweight, allowing the battery to be removed directly from below for maintenance. This facilitates worker operation, improves maintainability, and avoids collisions from the rear, thus enhancing battery safety.

[0019] 2. In this invention, the battery is located at the bottom, which lowers the loader's center of gravity and improves overall stability. The battery is located inside the counterweight body, ensuring good sealing and preventing dust from entering and affecting battery performance. The battery is integrated on the pallet, allowing for easy disassembly. This solves the problem of arranging multiple batteries in hybrid loaders, increasing the space on the rear frame and facilitating the installation of the range extender.

[0020] 3. In this utility model, by setting positioning blocks and slots, the gravity of the counterweight structure is transferred to the rear frame through the slots and positioning blocks, which can solve the problem that the tail plate and the front part of the rear frame are prone to deformation and cracking, thus improving safety and practicality. Attached Figure Description

[0021] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0022] Figure 1 It is a three-dimensional structure of the counterweight structure for hybrid loaders. Figure 1 .

[0023] Figure 2 It is a three-dimensional structure of the counterweight structure for hybrid loaders. Figure 2 .

[0024] Figure 3 It is a three-dimensional structure of the counterweight structure for hybrid loaders. Figure 3 .

[0025] Figure 4 It is a three-dimensional structure for a counterweight structure of a hybrid loader with magnetic suction components. Figure 1 .

[0026] Figure 5 It is a three-dimensional structure for a counterweight structure of a hybrid loader with magnetic suction components. Figure 2 .

[0027] Figure 6 yes Figure 5 Enlarged schematic diagram of the structure of region D in the middle.

[0028] Figure 7 This is an exploded view of the magnetic attraction component.

[0029] Figure 8 This is a schematic diagram of the installation relationship between the magnetic assemblies and the support plate. Figure 1 .

[0030] Figure 9 This is a schematic diagram of the installation relationship between the magnetic assemblies and the support plate. Figure 2 .

[0031] Figure 10 This is an exploded view of the rear counterweight system.

[0032] Explanation of reference numerals in the attached figures:

[0033] a. Counterweight body; 1. Front section; 2. Taillight mounting bracket; 3. Upper sealing plate; 4. Rear section; 401. Charging port; 402. Inspection port; 5. Side panel; 6. Slot; 7. First through hole; 8. Towing hole; 9. Pin hole; 10. First mounting port; 11. Bottom sealing plate; 12. Second mounting port; 121. Reinforcing rib; 13. Intermediate longitudinal beam; 131. Edge retaining wall; b. Rear frame; 14. Frame Main beam; 141, positioning block; 15, first base; 16, second base; 17, third base; 18, tail plate; 181, second through hole; 19, battery; 20, tray; a1, box cover; a2, hinge; a3, handle; a4, recessed hole; a5, support plate; a6, magnetic suction assembly; a61, protective sleeve; a62, magnet; a63, rubber sleeve; a7, screw; a8, elastic element. Detailed Implementation

[0034] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0036] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] Example 1:

[0038] like Figure 1 - Figure 3 As shown, this embodiment proposes a counterweight structure for a hybrid loader, including a counterweight body a. The upper surface of the counterweight body a is recessed downwards to form a groove for connection with the vehicle frame. The groove divides the counterweight body a into a front section 1 and two sets of rear sections 4. Each end of the front section 1 is connected to a set of rear sections 4, forming an overall U-shaped structure. At least one set of second mounting ports 12 for accommodating batteries 19 is provided at the bottom of the counterweight body a. Several batteries 19 are integrated on a support plate 20, which is detachably connected to the counterweight body a. When it is necessary to disassemble and repair the batteries 19, the batteries 19 and the support plate 20 can be disassembled and installed from the bottom of the counterweight body a. In this embodiment, the support plate 20 and the counterweight body a are bolted together.

[0039] To improve durability, several reinforcing ribs 121 are provided inside the second mounting opening 12. In this embodiment, two sets of second mounting openings 12 are provided, and a middle longitudinal beam 13 is provided between the two sets of second mounting openings 12. The middle longitudinal beam 13 has baffles 131 on both sides, which serve to reinforce the structure and, when installing the battery 19, can be used for positioning to facilitate finding the mounting base.

[0040] In this embodiment, the counterweight body a is a shell structure with an internal accommodating space. The groove is formed by the connection and enclosure of the upper sealing plate 3 and the side baffle 5. The upper sealing plate 3 and the side baffle 5 are respectively connected to the counterweight body a. The counterweight body a can be manufactured as a single piece. In this embodiment, a taillight mounting base 2 is formed by an upward bulge at the connection between the front part 1 and the rear part 4. This taillight mounting base 2 is used to install the taillight and can prevent damage from falling objects. It also features a curved design, giving the counterweight a beautiful, simple, and elegant appearance.

[0041] In this embodiment, a first mounting port 10 is provided on the top surface of one of the rear parts 4. A charging socket and a storage battery 19 are provided in the first mounting port 10. A cover plate can be bolted to the first mounting port 10 to ensure a seal.

[0042] In this embodiment, a charging port 401 and / or a maintenance port 402 are provided on the side of at least one rear part 4; for convenient charging, an openable or closable cover a1 is provided at the charging port 401 to form an openable and closable structure. A cover plate can be attached to the maintenance port 402 for convenient maintenance of the battery 19.

[0043] The bottom of the counterweight body a has an inclined bottom sealing plate 11, which can reduce the volume of the easily collided parts and reduce the probability of rubbing.

[0044] In this embodiment, the front part 1 has a horizontally arranged traction hole 8, and several through holes 7 arranged horizontally on both sides of the traction hole 8; the front part 1 also has a vertical pin hole 9, which is connected to the traction hole 8. The traction hole 8 is used to place the trailer rope, and the pin hole 9 is used to place the trailer pin.

[0045] Application results:

[0046] This utility model optimizes the design of the counterweight body a, placing the battery 19 on the lower front side of the counterweight. This allows the battery 19 to be removed directly from below for maintenance, making it convenient for workers to operate and providing good maintainability. It also avoids collisions from the rear, improving the safety of the battery 19.

[0047] Example 2:

[0048] like Figures 4-9 As shown, this embodiment proposes a counterweight structure for a hybrid loader. Based on Embodiment 1, an openable or closable cover a1 is provided at the charging port 401 to form an openable / closable structure. The aforementioned openable / closable structure can adopt the following structure:

[0049] A cover a1 is provided at the charging port 401. One end of the cover a1 is connected to the outer shell of the counterweight body a via a hinge a2, and a handle a3 is provided on the outer wall of the other end of the cover a1 for easy operation. A support plate a5 is provided inside the charging port 401, and the support plate a5 is fixedly connected to the inner wall of the counterweight body a, which can be done by welding, bolting, or other methods. A magnetic attraction component a6 is provided on the support plate a5 for adsorbing the cover a1. The magnetic attraction component a6 can be fixed by bolting, such as by using screws a7 or bolts to directly fasten the magnetic attraction component a6. A recessed hole a4 is provided on the inner wall of the cover a1 for use with the magnetic attraction component a6.

[0050] Considering the actual application process, the magnetic component a6 can use the conventional magnet a62. However, since the application environment is the opening and closing scenario of the box cover a1, multiple collisions may cause the magnet a62 to break easily. It has the problems of weak impact resistance, fragility and large collision noise.

[0051] To address this, further improvements were made. For instance, to address the fragility of magnet a62, the magnetic suction assembly a6 adopts the following optimized structure: the magnetic suction assembly a6 includes a bowl-shaped protective sleeve a61 with a central hole. The protective sleeve a61 has a storage cavity inside, in which magnet a62 is installed. Magnet a62 has a countersunk hole at its center, corresponding to the central hole, and the countersunk hole and the central hole are aligned on the same axis. A rubber sleeve a63 is placed between the inner wall of the protective sleeve a61 and the outer wall of magnet a62. The rubber sleeve a63 serves two purposes: firstly, it provides protection by changing the rigid contact between magnet a62 and protective sleeve a61 to a flexible contact; secondly, it provides shock absorption, and when the lid a1 collides and attracts magnet a62, it has the function of shock absorption and noise reduction.

[0052] In this embodiment, the countersunk hole is a tapered countersunk hole, and the head of screw a7 is completely set in the countersunk hole, which is a non-exposed setting method. This can ensure that the entire magnetic attraction surface is a plane, ensuring effective attraction force.

[0053] As another embodiment, considering that if magnet a62 is fixed, due to factors such as the machining accuracy of the cover a1, installation errors, or deformation after long-term use, it is difficult for magnet a62 and cover a1 to achieve an ideal fit, the following structure can also be adopted:

[0054] The magnetic suction component a6 is changed from a fixed setting to a micro-movement setting. That is, after the magnetic suction component a6 is installed, there is a certain gap between the magnetic suction component a6 and the support plate a5 to ensure that the magnetic suction component a6 can be slightly adjusted, so that the magnet a62 component can be tilted to a certain extent. Through slight planar rotation adjustment, it is ensured that it fits tightly with the box cover a1.

[0055] As another feasible embodiment, an elastic element a8 can be provided between the magnetic component a6 and the support plate a5 to provide micro-elasticity. The purpose of this arrangement is to enable the magnet a62 component to not only have the function of micro-rotation, but also to be able to adjust its displacement along the screw a7, which can play a certain role in displacement compensation. This is because in practical applications, if a good seal is required between the cover a1 and the edge of the charging port 401, the installation accuracy of the magnet a62 component is required, which means that the position needs to be constantly adjusted during installation to ensure the installation accuracy, which is relatively troublesome. After introducing the elastic element a8, the magnetic component a6 can be adjusted back and forth, so even if the installation accuracy is not high, a good seal between the cover a1 and the edge of the charging port 401 can still be guaranteed.

[0056] It should be noted that the elastic element a8 can be a spring, elastic pad, or other similar structure.

[0057] Example 3:

[0058] Reference Appendix Figure 10 This embodiment proposes a rear counterweight system, including the counterweight structure for a hybrid loader as described in Embodiment 1 or Embodiment 2; it also includes a rear frame b, the rear end of which is provided with a tail plate 18, the rear end of which can be inserted into a groove to form a plug-in structure; and the tail plate 18 can be detachably connected to the front part 1.

[0059] Specifically, the rear frame b includes a frame beam 14. From front to rear, the top of the frame beam 14 is provided with a first base 15, a second base 16, and a third base 17. The first base 15 is used to install the cab support, the second base 16 is used to install the hydraulic oil tank, and the third base 17 is used to install the range extender. The tail plate 18 has a second through hole 181 that matches the first through hole 7. Bolts pass through the first through hole 7 and the second through hole 181, allowing the tail plate 18 to be bolted and fixed to the front part 1. A positioning block 141 is provided on the outer wall of the frame beam 14, and a slot 6 is provided on the inner wall of the rear part 4. The positioning block 141 can be inserted into the slot 6. By providing the positioning block 141 and the slot 6, the weight of the counterweight structure is transferred to the rear frame b through the slot 6 and the positioning block 141. This solves the problem of easy deformation and cracking when the tail plate 18 of the rear frame b is only connected to the front part 1, improving safety and practicality.

[0060] As can be seen, in this utility model, the battery 19 is located at the bottom, which can lower the center of gravity of the loader and improve the stability of the whole machine. The battery 19 is located inside the counterweight body a, with good sealing performance, which can prevent dust from entering and affecting the performance of the battery 19. The battery 19 is integrated on the pallet 20, which can be easily disassembled with the help of the pallet 20. This solves the problem of arranging multiple batteries 19 in hybrid loaders, increases the space on the rear frame b, and facilitates the installation of the range extender.

[0061] Example 4:

[0062] This embodiment also proposes a loader that includes the counterweight structure or rear counterweight system for the hybrid loader described in the above embodiments. The loader can also be replaced with forklifts, tractors, or other construction machinery.

[0063] Although the specific embodiments of the utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the utility model. Based on the technical solution of the utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the utility model.

Claims

1. A counterweight structure for a hybrid loader, comprising a counterweight body (a), wherein the upper surface of the counterweight body (a) is recessed downward to form a groove for connection with a vehicle frame; the groove divides the counterweight body (a) into a front portion (1) and two sets of rear portions (4); each end of the front portion (1) is connected to a set of rear portions (4), forming a U-shaped structure; at least one set of second mounting ports (12) for accommodating batteries (19) is provided at the bottom of the counterweight body (a); a plurality of batteries (19) are integrated on a tray (20), the tray (20) being detachably connected to the counterweight body (a); characterized in that, A charging port (401) and / or an inspection port (402) are provided on the side of at least one of the rear portions (4); a cover (a1) that can be opened or closed is provided at the charging port (401) to form an openable and closable structure; One end of the lid (a1) is connected to the outer shell of the counterweight body (a) via a hinge (a2); a support plate (a5) is provided inside the charging port (401), and the support plate (a5) is fixedly connected to the inner wall of the counterweight body (a); a magnetic suction component (a6) is provided on the support plate (a5) to achieve adsorption of the lid (a1); The magnetic attraction assembly (a6) includes a bowl-shaped protective sleeve (a61) with a central hole in the center. The interior of the protective sleeve (a61) has a storage cavity in which a magnet (a62) is installed. The center of the magnet (a62) has a countersunk hole corresponding to the central hole, and the axis of the countersunk hole is collinear with that of the central hole. A rubber sleeve (a63) is provided between the inner wall of the protective sleeve (a61) and the outer wall of the magnet (a62). The magnetic accumulator (a6) is movably connected to the support plate (a5); there is a gap between the magnetic accumulator (a6) and the support plate (a5) to ensure that the magnetic accumulator (a6) can be finely adjusted.

2. The counterweight structure for a hybrid loader according to claim 1, characterized in that, The groove is formed by connecting and enclosing an upper sealing plate (3) and a side baffle (5), and the upper sealing plate (3) and the side baffle (5) are respectively connected to the counterweight body (a).

3. The counterweight structure for a hybrid loader according to claim 1, characterized in that, A first mounting port (10) is provided on the top surface of one of the rear portions (4).

4. The counterweight structure for a hybrid loader according to claim 1, characterized in that, A taillight mounting bracket (2) is formed by raising upward at the connection between the front part (1) and the rear part (4).

5. The counterweight structure for a hybrid loader according to claim 1, characterized in that, The bottom of the counterweight body (a) has an inclined bottom sealing plate (11).

6. The counterweight structure for a hybrid loader according to claim 1, characterized in that, The front part (1) has a horizontally arranged traction hole (8), and several through holes (7) are provided on both sides of the traction hole (8); the front part (1) also has a vertical pin hole (9), which is connected to the traction hole (8).

7. A rear counterweight system, characterized in that, The system includes a counterweight structure for a hybrid loader as described in any one of claims 1-6; it also includes a rear frame (b), the rear end of which is provided with a tail plate (18), the rear end of which can be inserted into the groove, and the tail plate (18) can be detachably connected to the front part (1).

8. A rear counterweight system according to claim 7, characterized in that, The rear frame (b) includes a frame beam (14), and the top of the frame beam (14) is provided with a first base (15), a second base (16), and a third base (17) from the front end to the rear end. The tail plate (18) is provided with a second through hole (181) that is adapted to the first through hole (7). Bolts are inserted in the first through hole (7) and the second through hole (181) so that the tail plate (18) is bolted and fixed to the front part (1). The outer wall of the frame beam (14) is provided with a positioning block (141), and the inner wall of the rear part (4) has a slot (6). The positioning block (141) can be adapted to the slot (6) for insertion.

9. A loader, characterized in that, Includes the counterweight structure for a hybrid loader as described in any one of claims 1-6 or the rear counterweight system as described in any one of claims 7-8.

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