Counterweight connecting structure and heavy forklift

Abstract

The utility model provides a counter weight connecting structure and a heavy forklift. The counter weight connecting structure is used for connecting a counter weight to an engineering carrier. The connecting structure comprises a connecting frame, wherein one side of the connecting frame in the width direction is mounted on the side wall of the engineering carrier; the movable frame is movably installed in the connecting frame, the movable frame can move front and back in the axial direction of the connecting frame, a hook with an upward notch is arranged on the movable frame, an avoiding groove is formed in the position, corresponding to the connecting frame, of the balancing weight, a connecting rod is transversely installed in the avoiding groove, and the connecting rod is movably installed in the connecting frame. The connecting rod can be hung on the hook; the depth of the avoiding groove is larger than the length of the connecting frame, so that when the balancing weight moves towards the engineering carrier, the connecting frame can stretch into the avoiding groove. The connecting frame further comprises a driving piece used for driving the moving frame to move front and back.

Description

Technical Field

[0001] This application relates to the field of engineering vehicle technology, and in particular to a counterweight connection structure and a heavy-duty forklift. Background Technology

[0002] In current forklift designs, counterweights are typically included to prevent tipping when handling heavy loads. However, these counterweights are usually fixed, meaning they are permanently installed in a specific location on the forklift. This fixed installation method prevents torque adjustment for different working environments or varying load weights. Due to this non-adjustable torque, the forklift's center of gravity is also fixed and cannot be optimized for specific conditions. This not only limits the forklift's flexibility and adaptability but may also affect operational safety in certain situations. Utility Model Content

[0003] The purpose of this utility model is to solve the above-mentioned problems by providing a counterweight connection structure and a heavy-duty forklift.

[0004] The technical solution of this application is implemented as follows:

[0005] In a first aspect, this application provides a counterweight connection structure for connecting a counterweight block to an engineering vehicle;

[0006] The connection structure includes:

[0007] A connecting frame, one side of which is mounted on the side wall of the engineering vehicle in the width direction;

[0008] A movable frame is movably installed in the connecting frame. The movable frame can move back and forth along the axial direction of the connecting frame. The movable frame has a hook with an upward notch. The counterweight has a clearance groove at a position corresponding to the connecting frame. A connecting rod is installed laterally in the clearance groove. The connecting rod can be hung on the hook.

[0009] The depth of the clearance groove is greater than the length of the connecting frame, so that when the counterweight moves toward the engineering vehicle, the connecting frame can extend into the clearance groove;

[0010] The connecting frame further includes a drive component for driving the movable frame to move back and forth.

[0011] The advantages or beneficial effects of the above technical solutions include at least the following:

[0012] Secondly, this application also provides a heavy-duty forklift on which the aforementioned counterweight connection structure is installed.

[0013] The advantages or beneficial effects of the above technical solutions include at least the following:

[0014] The position of the counterweight can be adjusted by rotating the lead screw, thereby effectively regulating the vehicle's center of gravity. This significantly improves the forklift's flexibility and operational performance in various working environments. Furthermore, the counterweight is installed using a convenient hook and connecting rod system, allowing engineers to install counterweights of different weights according to actual needs. This design is not only simple in structure but also facilitates daily maintenance and repair, ensuring the forklift's efficient operation and long-term reliability. Attached Figure Description

[0015] The accompanying drawings illustrate exemplary embodiments of the present application and, together with the description thereof, serve to explain the principles of the present application. These drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of this specification.

[0016] Figure 1 A schematic diagram of the engineering vehicle according to an embodiment of the present invention is shown;

[0017] Figure 2 A schematic diagram of the counterweight block installed on the vehicle according to an embodiment of the present invention is shown;

[0018] Figure 3 A schematic diagram of the installation of the weight block according to an embodiment of the present invention is shown;

[0019] Figure 4 A schematic diagram of the fixing hoop according to an embodiment of the present invention is shown;

[0020] Figure 5 This diagram shows an embodiment of the present invention in which both the weight block and the counterweight block are mounted on a vehicle.

[0021] Figure 6 This diagram illustrates the first step of connecting the counterweight and the hook according to an embodiment of the present invention.

[0022] Figure 7 This diagram illustrates the second step of connecting the counterweight and the hook according to an embodiment of the present invention.

[0023] Figure 8 This diagram illustrates the third step of connecting the counterweight and the hook according to an embodiment of the present invention.

[0024] Figure 9 This diagram illustrates the movement of the movable frame according to an embodiment of the present invention. Figure 1 ;

[0025] Figure 10 This diagram illustrates the movement of the movable frame according to an embodiment of the present invention. Figure 2 ;

[0026] Figure 11 A schematic diagram of a lead screw according to an embodiment of the present invention is shown;

[0027] Figure 12 A schematic diagram of the motor position according to an embodiment of the present invention is shown. The positions of the engineering vehicle and the motor are hidden in the diagram, and the position of the motor is shown from a top view.

[0028] Reference numerals: 10, counterweight; 11, connecting rod; 12, clearance groove; 13, first support hole; 20, connecting structure; 21, connecting frame; 211, guide groove; 22, moving frame; 221, guide block; 222, hook; 23, lead screw; 24, support rod; 241, fixing hoop; 25, motor; 30, weight; 31, second support hole; 40, engineering vehicle. Detailed Implementation

[0029] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While some embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this application. It should be understood that the drawings and embodiments of this application are for illustrative purposes only and are not intended to limit the scope of protection of this application.

[0030] It should be noted that, where there is no conflict, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] It should be understood that the term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this application are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0032] It should be noted that the terms "one" and "more" used in this application are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0033] The names of the messages or information exchanged between multiple devices in the embodiments of this application are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0034] Reference Figure 1 and Figure 2 A counterweight connection structure, wherein the connection structure 20 is used to connect the counterweight block 10 to the engineering vehicle 40;

[0035] Specifically, the connection structure 20 includes:

[0036] Connecting frame 21, one side of the connecting frame 21 in the width direction is installed on the side wall of the engineering vehicle 40;

[0037] A movable frame 22 is movably installed in a connecting frame 21. The movable frame 22 can move back and forth along the axial direction of the connecting frame 21. The movable frame 22 has a hook 222 with an upward-facing notch. A clearance groove 12 is provided at a position corresponding to the counterweight 10 and the connecting frame 21. A connecting rod 11 is horizontally installed in the clearance groove 12 and can be hung on the hook 222. Furthermore, the depth of the clearance groove 12 is greater than the length of the connecting frame 21 so that when the counterweight 10 moves toward the engineering vehicle 40, the connecting frame 21 can extend into the clearance groove 12. Figures 6 to 8 As shown, the connecting rod 11 can be hung on the hook 222 to connect the counterweight 10 with the moving frame 22. During this process, the counterweight 10 needs to be lifted with the help of a forklift or crane.

[0038] Preferably, at least two hooks 222 are provided along the height direction of the connecting frame 21; two connecting rods 11 are provided on the counterweight 10 at positions corresponding to the hooks 222. During installation, both connecting rods 11 need to be simultaneously hooked onto the hooks 222. It is worth noting that the two hooks 222 are positioned above and below the connecting frame 21, respectively. When the moving frame 22 moves backward, the connecting rods 11 will not touch the connecting frame 21. Furthermore, the notches of the hooks 222 extend beyond the outside of the connecting frame 21, ensuring that the installation process is not affected by the connecting frame 21. Figure 8 As shown.

[0039] Furthermore, the connecting frame 21 also includes a driving component for driving the movable frame 22 to move back and forth. The driving component includes a lead screw 23, which is installed inside the connecting frame 21. One end of the lead screw 23 is rotatably connected to the inner wall of the connecting frame 21, and the other end extends into the engineering carrier 40. The movable frame 22 is threadedly engaged with the lead screw 23, and the rotation of the lead screw 23 drives the movable frame 22 to move back and forth within the connecting frame 21. The driving component also includes a motor 25, which is installed inside the engineering carrier 40. Figure 12 As shown, one end of the lead screw 23 that extends into the engineering vehicle 40 is connected to the drive end of the motor 25.

[0040] After the connecting rod 11 is hung on the hook 222, the motor 25 rotates the lead screw 23, which moves the moving frame 22 toward the engineering vehicle 40. After moving to the extreme position, the counterweight 10 is pressed tightly against the engineering vehicle 40, and the installation is completed.

[0041] Based on the further improvement of the above structure, the connection structure 20 further includes:

[0042] Support rods 24, multiple support rods 24 are fixedly installed on the side wall of the engineering vehicle 40. The counterweight 10 has multiple first support holes 13 that are adapted to the support rods 24. The counterweight 10 can pass through the first support holes 13 and pass through the support rods 24 to be hung on the side wall of the engineering vehicle 40. When the moving frame 22 moves closer to the engineering vehicle 40 and reaches its limit position, during this process, the counterweight 10 is fitted onto the support rods 24 through the first support holes 13 to distribute the weight of the counterweight 10. Simultaneously, the connecting structure 20 further includes a fixing clamp 241, which can be fixed to the support rods 24 so that the counterweight 10 is tightly pressed against the side wall of the engineering vehicle 40, thus fixing the counterweight 10 to the support rods 24. Figure 4 and Figure 5 As shown.

[0043] At this time, the user can adjust the torque of the counterweight 10 by pushing the movable frame 22 back and forth to change the extension degree of the counterweight 10 according to the needs of the site. For example, when the engineering vehicle 40 tilts to the left, the counterweight 10 located on the right side of the vehicle can be extended outward appropriately to change the center of gravity of the whole vehicle and prevent the vehicle from overturning to the left.

[0044] Based on the above structure, a weight block 30 can also be fitted onto the support rod 24. The cross-sectional shape of the weight block 30 is consistent with the cross-sectional shape of the counterweight 10 on the side near the engineering vehicle 40 to ensure that the appearance is not abrupt. A second support hole 31 is provided at the position corresponding to the support rod 24. The weight block 30 is fitted onto the support rod 24 through the second support hole 31. During installation, a crane is needed to fit the weight block 30 onto the support rod 24. It should be noted that a through hole is provided in the middle of the weight block 30. This through hole is used to avoid the connecting frame 21, so that the installation of the weight block 30 will not be affected by the connecting frame 21. Then the weight block 30 is installed by the above method.

[0045] Based on the further improvement of the above structure, guide blocks 221 are also installed on both sides of the movable frame 22, and guide grooves 211 are opened on the inner wall of the connecting frame 21. The guide blocks 221 are movably embedded in the guide grooves 211, so that the movement of the movable frame 22 is directional.

[0046] An embodiment of this utility model also provides a heavy-duty forklift, on which a counterweight connection structure 20 as described above is installed, wherein the engineering vehicle 40 is a heavy-duty forklift.

[0047] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0048] Those skilled in the art should understand that the above embodiments are merely for illustrative purposes and are not intended to limit the scope of this application. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of this application.

Claims

1. A counterweight connection structure, characterized in that: The connection structure (20) is used to connect the counterweight (10) to the engineering vehicle (40); The connection structure (20) includes: A connecting frame (21) is mounted on the side wall of the engineering vehicle (40) on one side in the width direction; A movable frame (22) is movably installed in the connecting frame (21). The movable frame (22) can move back and forth along the axial direction of the connecting frame (21). The movable frame (22) has a hook (222) with the notch facing upward. The counterweight (10) has a relief groove (12) at a position corresponding to the connecting frame (21). A connecting rod (11) is installed laterally in the relief groove (12). The connecting rod (11) can be hung on the hook (222). The depth of the clearance groove (12) is greater than the length of the connecting frame (21) so that when the counterweight (10) moves toward the engineering vehicle (40), the connecting frame (21) can extend into the clearance groove (12); The connecting frame (21) further includes a drive element for driving the movable frame (22) to move back and forth.

2. The counterweight connection structure according to claim 1, characterized in that: The driving component includes: A lead screw (23) is installed inside the connecting frame (21). One end of the lead screw (23) is rotatably connected to the inner wall of the connecting frame (21), and the other end extends into the engineering vehicle (40). The movable frame (22) is threadedly engaged with the lead screw (23). The rotation of the lead screw (23) drives the movable frame (22) to move back and forth in the connecting frame (21). The motor (25) is installed inside the engineering vehicle (40), and one end of the lead screw (23) extending into the engineering vehicle (40) is connected to the drive end of the motor (25).

3. The counterweight connection structure according to claim 2, characterized in that: The connection structure (20) further includes: Support rods (24), multiple support rods (24) are fixedly installed on the side wall of the engineering vehicle (40), and multiple first support holes (13) adapted to the support rods (24) are opened through the counterweight (10). The counterweight (10) can pass through the support rods (24) through the first support holes (13) to be hung on the side wall of the engineering vehicle (40); A fixing hoop (241) can be fixed on the support rod (24) so ​​that the counterweight (10) is close to the side wall of the engineering vehicle (40).

4. The counterweight connection structure according to claim 3, characterized in that: Guide blocks (221) are also installed on both sides of the movable frame (22), and guide grooves (211) are opened on the inner wall of the connecting frame (21). The guide blocks (221) are movably embedded in the guide grooves (211).

5. The counterweight connection structure according to claim 4, characterized in that: At least two hooks (222) are provided along the height direction of the connecting frame (21); The counterweight (10) and the hook (222) are provided with two connecting rods (11) at the corresponding positions.

6. The counterweight connection structure according to claim 5, characterized in that: The support rod (24) may also be fitted with a weight (30); The cross-sectional shape of the weight block (30) is consistent with the cross-sectional shape of the counterweight block (10) on the side closer to the engineering vehicle (40); The weight block (30) has a second support hole (31) at a position corresponding to the support rod (24), and the weight block (30) is sleeved on the support rod (24) through the second support hole (31).

7. A heavy-duty forklift, characterized in that: The heavy-duty forklift is equipped with a counterweight connection structure as described in any one of claims 1-6.

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