Lifting cylinder supporting device for forklift gantry
By using a fastening assembly consisting of U-shaped clamps and T-shaped cushioning pads in the forklift mast system, the problem of cylinder detachment caused by forklift mast vibration was solved, achieving stable fixation of the lifting cylinder, reducing the risk of failure and maintenance costs.
Patent Information
- Application Number
- CN202520384444.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-03-06
AI Technical Summary
During operation, vibrations in the forklift mast system can cause the cylinder support device to loosen. Existing rigid clamp connection methods are prone to loosening, increasing the risk of failure and resulting in high maintenance costs.
The system employs a U-shaped clamp and a T-shaped buffer sleeve structure. Through a fastening assembly consisting of fastening bolts, retainers, and adjusting blocks, the T-shaped buffer sleeve absorbs vibrations, ensuring the effective fixation of the lifting cylinder.
Effective buffering and vibration reduction prevent gantry failures caused by poor hoisting cylinder fixing, thus reducing maintenance frequency and costs.
Smart Images
Figure CN223766028U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of forklift mast technology, specifically relating to a lifting cylinder support device for forklift masts. Background Technology
[0002] The forklift mast is the main load-bearing structure of the forklift assembly. As a mechanism for lifting goods, it is also called the mast and consists of an inner mast, outer mast, fork carriage, forks, sprockets, chains, lifting cylinders, and tilting cylinders. In the forklift mast system, the lifting cylinder includes a cylinder barrel and a piston rod that are nested together. The cylinder barrel is fixed to the outer mast, and the upper end of the piston rod is fixed to the inner mast. The cylinder barrel and the outer mast are generally fixed at two or more points. One is located at the bottom of the cylinder barrel, and the others are located at the upper end or middle of the cylinder barrel, depending on the specific structure. The fixing structure located at the upper end or middle of the cylinder barrel is called the cylinder support device. The function of the cylinder support device is to restrict the degree of freedom of the lifting cylinder barrel and make the connection between the lifting cylinder barrel and the outer mast secure.
[0003] Because forklift mast systems repeatedly lift, lower, tilt, and move horizontally with the forklift during operation, these actions cause vibrations in the mast system. Prolonged vibration can easily lead to the loosening of the cylinder support device and the inability to effectively secure the lifting cylinder, resulting in mast system failure. In existing technology, the common method is to use clamps to rigidly connect and fix the lifting cylinder to the mast using the cylinder support device. The drawback of this method is that with the lifting and lowering of the mast and the operation of the entire machine, the rigid clamps gradually loosen due to mast vibration and displacement, losing their restraining effect on the cylinder and increasing the risk of mast system failure. Currently, the solution to loose rigid clamps is to periodically inspect and pre-tighten or replace them to reduce the occurrence of failures. However, this not only reduces the service life of the clamps but also increases the time and labor costs of inspection and replacement. Therefore, there is an urgent need for a cylinder support device for the lifting cylinder of a forklift mast. Utility Model Content
[0004] To address some or all of the technical problems existing in the prior art, this utility model provides a lifting cylinder support device for a forklift mast. The lifting cylinder support device is disposed between the mast body and the lifting cylinder. The lifting cylinder support device for the forklift mast includes a U-shaped clamp surrounding the outer periphery of the lifting cylinder and a fastening assembly fitted onto one end of the U-shaped clamp, wherein:
[0005] One end of the U-shaped clamp consists of two parallel fastening bolts. The fastening assembly includes a retainer sleeved around the outer periphery of the fastening bolts and an adjusting block disposed between the retainer and the U-shaped clamp. The retainer is fixed to the gantry body. One side of the adjusting block is an arc-shaped surface that matches the outer periphery of the lifting cylinder, and the other side is a flat surface.
[0006] The retainer has two fixing holes that match the two fastening bolts. The fixing holes are fitted around the outer periphery of the fastening bolts. A buffer T-shaped sleeve is provided between the fastening bolts and the fixing holes. The buffer T-shaped sleeve includes a first bushing and a second bushing that are connected to each other. The first bushing is located between the fastening bolts and the fixing holes. A nut is engaged with the free end of the fastening bolts. One end of the second bushing abuts against the end of the retainer away from the adjusting block, and the other end abuts against the end face of the nut.
[0007] In one specific embodiment, in the above-mentioned lifting cylinder support device for forklift mast, a pad is provided between the adjusting block and the retainer, and a first through hole matching the fixing hole is provided on the pad, and the first through hole is sleeved on the outer periphery of the fastening bolt.
[0008] In one specific embodiment, in the above-mentioned lifting cylinder support device for forklift mast, an adjusting pad is provided between the adjusting block and the pad plate, and a second through hole matching the fixing hole is opened on the adjusting pad, and the second through hole is sleeved on the outer periphery of the fastening bolt.
[0009] In one specific embodiment, in the above-mentioned lifting cylinder support device for forklift mast, a washer is provided between the nut and the buffer T-shaped sleeve, and a third through hole matching the fixing hole is opened on the washer, and the third through hole is sleeved on the outer periphery of the fastening bolt.
[0010] In one specific embodiment, in the above-mentioned lifting cylinder support device for forklift mast, the adjusting block is provided with a fourth through hole that matches the fixing hole, and the fourth through hole is sleeved on the outer periphery of the fastening bolt.
[0011] The lifting cylinder support device for forklift masts of this utility model has the following advantages and beneficial effects:
[0012] This device incorporates a T-shaped buffer sleeve between the fastening bolt and the retainer. When the piston rod in the lifting cylinder vibrates during lifting and lowering, the vibration is transmitted through the lifting cylinder to the U-shaped clamp. The vibration generated by the U-shaped clamp is effectively absorbed by the T-shaped buffer sleeve. Similarly, when the mast body vibrates due to displacement or tilting, the vibration is transmitted through the retainer to the T-shaped buffer sleeve, which is also effectively absorbed. Therefore, the T-shaped buffer sleeve provides excellent cushioning and vibration reduction during forklift operation, ensuring effective fixation of the lifting cylinder and preventing mast malfunctions caused by poor cylinder fixation. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for further understanding of the embodiments of this utility model and constitute a part of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:
[0014] Figure 1 This is a schematic diagram of the lifting cylinder support device for a forklift mast according to the present invention;
[0015] Figure 2 This is a three-dimensional assembly drawing of the lifting cylinder support device for a forklift mast according to this utility model.
[0016] Figure 3 This is a schematic diagram of the T-shaped buffer sleeve in the lifting cylinder support device for forklift masts according to this utility model.
[0017] 1-U-shaped clamp, 11-fastening bolt, 2-buffer pad T-shaped sleeve, 21-first bushing, 22-second bushing, 3-washer, 4-nut, 5-pad, 6-adjusting pad, 7-adjusting block, 8-gantry body, 81-cage, 9-lifting cylinder. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0019] like Figure 1 , Figure 2 , Figure 3As shown, this utility model discloses a lifting cylinder support device for a forklift mast. The lifting cylinder support device is disposed between the mast body 8 and the lifting cylinder 9. The lifting cylinder support device for the forklift mast includes a U-shaped clamp 1 surrounding the lifting cylinder 9 and a fastening component fitted onto one end of the U-shaped clamp 1. One end of the U-shaped clamp 1 consists of two parallel fastening bolts 11. The fastening component includes a retainer 81 fitted onto the outer periphery of the fastening bolts 11 and an adjusting block 7 disposed between the retainer 81 and the U-shaped clamp 1. The retainer 81 is fixed to the gantry body 8. One side of the adjusting block 7 is an arc-shaped surface that matches the outer periphery of the lifting cylinder 9, and the arc-shaped surface abuts against the outer periphery of the lifting cylinder 9. The other side is a flat surface that abuts against the side of the retainer 81. The retainer 81 has two fixing holes that match the two fastening bolts 11. The inner diameter of the fixing holes matches the outer diameter of the fastening bolts 11. The fixing holes are fitted around the outer periphery of the fastening bolts 11. A buffer T-shaped sleeve 2 is provided between the fastening bolts 11 and the fixing holes. The buffer T-shaped sleeve 2 is made of a buffering material such as rubber. The T-shaped sleeve 2 includes a first bushing 21 and a second bushing 22 connected to each other. The first bushing 21 is disposed between the fastening bolt 11 and the fixing hole. The free end of the fastening bolt 11 is engaged with a nut 4. One end of the second bushing 22 abuts against the end of the retainer 81 away from the adjusting block 7, and the other end abuts against the end face of the nut 4. The outer diameter of the second bushing 22 is larger than the outer diameter of the first bushing 21. By providing a buffer T-shaped sleeve 2 between the fastening bolt 11 and the retainer 81, when the piston rod in the lifting cylinder 9 vibrates during lifting and lowering, the vibration is contained. The vibration is transmitted through the lifting cylinder 9 to the U-shaped clamp 1. The vibration generated by the U-shaped clamp 1 can be well absorbed by the buffer T-shaped sleeve 2. When the mast body 8 moves or tilts and vibrates, the vibration is transmitted through the retainer 81 to the buffer T-shaped sleeve 2. The vibration generated can be well absorbed by the buffer T-shaped sleeve 2. It can be seen that the buffer T-shaped sleeve 2 can play a good role in buffering and vibration reduction during forklift operation, ensuring the effective fixation of the lifting cylinder 9 and avoiding mast failures caused by poor fixation of the lifting cylinder 9.
[0020] In one specific embodiment, in the lifting cylinder support device for forklift mast of this utility model, a pad 5 is provided between the adjusting block 7 and the retainer 81. The pad 5 has a first through hole that matches the fixing hole. The first through hole is sleeved on the outer periphery of the fastening bolt 11. With this arrangement, the connection between the adjusting block 7 and the retainer 81 can be made more stable through the pad 5, thereby making the overall connection of the fastening assembly more secure.
[0021] In one specific embodiment, in the lifting cylinder support device for forklift mast of this utility model, an adjusting pad 6 is provided between the adjusting block 7 and the pad plate 5. The adjusting pad 6 has a second through hole that matches the fixing hole. The second through hole is sleeved on the outer periphery of the fastening bolt 11. The number and shape of the adjusting pad 6 can be set according to the gap between the parts in the fastening assembly during actual use.
[0022] In one specific embodiment, in the lifting cylinder support device for forklift mast of this utility model, a washer 3 is provided between the nut 4 and the buffer pad T-shaped sleeve 2. The washer 3 has a third through hole that matches the fixing hole. The third through hole is sleeved on the outer periphery of the fastening bolt 11. With this arrangement, the connection between the nut 4 and the buffer pad T-shaped sleeve 2 can be made more stable through the washer 3, thereby making the overall connection of the fastening assembly more secure.
[0023] In one specific embodiment, in the lifting cylinder support device for forklift mast of this utility model, the adjusting block 7 is provided with a fourth through hole that matches the fixing hole. The fourth through hole is sleeved on the outer periphery of the fastening bolt 11. With this arrangement, the connection between the retainer 81 and the U-shaped clamp 1 can be made more stable and secure through the adjusting block 7.
[0024] The installation process of the lifting cylinder support device for forklift mast of this utility model is as follows: wrap the U-shaped clamp 1 around the U-shaped area of the lifting cylinder 9 to the outer periphery of the cylinder body, pass the fastening bolt 11 through the fourth through hole, the second through hole, the first through hole, the fixing hole, the inner hole of the buffer pad T-shaped sleeve 2, and the third through hole in sequence, and then fix it with the nut 4 to complete the installation of the lifting cylinder 9 support device.
[0025] In summary, compared with the prior art, the lifting cylinder support device for forklift masts of this utility model has the following advantages and beneficial effects:
[0026] This device uses a T-shaped buffer sleeve 2 between the fastening bolt 11 and the retainer 81. When the piston rod in the lifting cylinder 9 vibrates during lifting and lowering, the vibration is transmitted through the lifting cylinder 9 to the U-shaped clamp 1. The vibration generated by the U-shaped clamp 1 can be effectively absorbed by the T-shaped buffer sleeve 2. When the mast body 8 vibrates due to displacement or tilting, the vibration is transmitted through the retainer 81 to the T-shaped buffer sleeve 2, and the vibration generated can be effectively absorbed by the T-shaped buffer sleeve 2. It can be seen that the T-shaped buffer sleeve 2 can play a good role in buffering and vibration reduction during forklift operation, ensuring the effective fixation of the lifting cylinder 9 and avoiding mast failures caused by poor fixation of the lifting cylinder 9.
[0027] It should be noted that, unless otherwise expressly specified and limited, the term "connection" or its synonyms should be interpreted broadly in this document. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, expressions such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In addition, "front," "rear," "left," "right," "upper," and "lower" in this document refer to the placement state shown in the accompanying drawings.
[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A lift cylinder back-up device for a fork truck mast, said lift cylinder back-up device disposed between a mast body and said lift cylinder, characterized by, The lifting cylinder supporting device for the forklift mast comprises a U-shaped hoop arranged around the outer periphery of the lifting cylinder and a fastening assembly arranged at one end of the U-shaped hoop, wherein: One end of the U-shaped hoop is two fastening bolts parallel to each other, the fastening assembly comprises a retaining frame arranged around the outer periphery of the fastening bolts and an adjusting block arranged between the retaining frame and the U-shaped hoop, the retaining frame is fixed to the mast body, one side of the adjusting block is an arc surface matched to the outer periphery of the lifting cylinder, and the other side is a flat surface. Two fixing holes matched to the two fastening bolts are formed on the retaining frame, the fixing holes are arranged around the outer periphery of the fastening bolts, a buffer pad T-shaped sleeve is arranged between the fastening bolts and the fixing holes, the buffer pad T-shaped sleeve comprises a first shaft sleeve and a second shaft sleeve connected to each other, the first shaft sleeve is arranged between the fastening bolts and the fixing holes, the free end of the fastening bolt is engaged with a nut, one end of the second shaft sleeve abuts against one end of the retaining frame away from the adjusting block, and the other end abuts against the end face of the nut.
2. The mast cylinder counterbalance device for a fork truck mast as set forth in claim 1, wherein, A backing plate is arranged between the adjusting block and the retaining frame, a first through hole matched to the fixing hole is formed on the backing plate, and the first through hole is arranged around the outer periphery of the fastening bolt.
3. The mast cylinder counterbalance device for a fork truck mast as set forth in claim 2, wherein, An adjusting pad is arranged between the adjusting block and the backing plate, a second through hole matched to the fixing hole is formed on the adjusting pad, and the second through hole is arranged around the outer periphery of the fastening bolt.
4. The mast cylinder counterbalance device for a fork truck mast as set forth in claim 3, wherein, A gasket is arranged between the nut and the buffer pad T-shaped sleeve, a third through hole matched to the fixing hole is formed on the gasket, and the third through hole is arranged around the outer periphery of the fastening bolt.
5. The mast cylinder counterbalance device for a fork truck mast as set forth in claim 4, wherein, A fourth through hole matched to the fixing hole is formed on the adjusting block, and the fourth through hole is arranged around the outer periphery of the fastening bolt.