Telescopic hydraulic speed regulating structure of electric reach stacker
By incorporating an impact plate and buffer spring assembly into the hydraulic cylinder, the high pressure problem at the limit stroke of the hydraulic cylinder is solved, extending its service life and preventing cylinder explosion.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-25
- Publication Date
- 2026-04-10
AI Technical Summary
The existing hydraulic cylinders of front-end cranes lack a buffer device at their limit stroke, resulting in high pressure inside the cylinder cavity, shortening service life, or even causing the cylinder to explode.
An electric front-end crane telescopic hydraulic speed-regulating structure was designed. By setting an impact plate and a buffer spring assembly, the spring force of the buffer spring is used to buffer and reduce the speed of the piston rod, preventing high pressure at the extreme stroke.
It effectively buffers the piston rod's limit stroke, improves the service life of the hydraulic cylinder, and prevents cylinder explosion.
Smart Images
Figure CN224105451U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a crane technical field, concretely is a kind of electric positive face crane telescopic hydraulic speed regulation structure. BACKGROUND
[0002] Container front crane, simply called front crane, commonly known as container front crane or front crane, is used to load and unload container crane, usually through hydraulic cylinder to support boom, rely on the telescoping of piston rod in hydraulic cylinder to lift and lower boom, but the hydraulic cylinder on the existing front crane mostly has no buffer device to buffer when limit stroke, easy to make when reaching limit stroke, high pressure in cylinder cavity, thereby leading to hydraulic cylinder service life reduction even the condition of cylinder explosion, so a kind of electric positive face crane telescopic hydraulic speed regulation structure is presented. SUMMARY
[0003] (I) the technical problem solved
[0004] In view of the deficiencies of prior art, the utility model provides a kind of electric positive face crane telescopic hydraulic speed regulation structure, with the advantages such as speed reduction protection, solve the problem that the hydraulic cylinder on the existing front crane mostly has no buffer device to buffer when limit stroke, easy to make when reaching limit stroke, high pressure in cylinder cavity, thereby leading to hydraulic cylinder service life reduction even the condition of cylinder explosion.
[0005] (II) technical scheme
[0006] In order to realize the above-mentioned speed reduction protection purposes, the utility model provides technical schemes as follows: A telescopic hydraulic speed regulation structure of electric front reach stacker, including crane main body, the top right side of crane main body is provided with derrick boom, the top of crane main body is provided with the hydraulic cylinder cylinder body at derrick boom left side, the inside of hydraulic cylinder cylinder body is provided with piston block, the top of piston block is provided with the piston rod of one end extends to the top of hydraulic cylinder cylinder body and is connected with derrick boom, the inner bottom wall of hydraulic cylinder cylinder body is provided with first casing, the inside of first casing is provided with first moving plate, the top of first moving plate is provided with first extension block of one end extends to the top of first casing on both sides, the top of first extension block of left side is provided with first impact plate of one end is fixedly connected with the top of right side first extension block, the left and right sides of first casing inner bottom wall are provided with sleeve, the inside of two sleeve is provided with limit rod of one end extends to its top and is fixedly connected with the bottom of first moving plate, the bottom of first moving plate and the inner bottom wall of first casing are provided with first buffer spring of being located at the opposite side of two sleeves and the number is two and being left and right symmetrical distribution, the inner bottom wall of first casing is provided with fixed block of being located between two first buffer springs and the number is two and being left and right symmetrical distribution, between two fixed blocks, first buffer assembly of one end is movably connected with the inner bottom wall of first casing and the other end is movably connected with the bottom of first moving plate is provided, the inner top wall of hydraulic cylinder cylinder body is provided with two second casing and is located at the left and right sides of piston rod respectively, the inside of two second casing is provided with second moving plate, the bottom of two second moving plate is provided with second extension block of one end extends to the bottom of two second casing respectively, the bottom of two second extension block is provided with second impact plate, the inner top wall of two second casing is provided with frame, the inside of two frame is provided with moving block of one end extends to its bottom and is fixedly connected with the top of two second moving plate respectively, the inner top wall of two second casing is provided with third buffer spring of being located at the opposite side of two frame and one end is fixedly connected with the top of two second moving plate respectively, the opposite side of two second casing is provided with second buffer assembly of one end is fixedly connected with the inner top wall of two second casing and the other end is movably connected with the top of two second moving plate respectively, the opposite side of two second buffer assembly is fixedly connected with the opposite side inner wall of two second casing respectively.
[0007] Preferably, the first buffer assembly includes a first sliding rod, two fixedly installed between the first sliding rod, the first sliding block of one end is movably installed on the outer side of the left and right ends of the first sliding rod and the inner bottom wall of the first casing, two first sliding blocks are fixedly installed with the second buffer spring sleeved on the outer side of the first sliding rod, the top of two first sliding blocks is movably installed with the first connecting rod of one end movably connected with the bottom of the first moving plate.
[0008] Preferably, the second buffer assembly comprises a second sliding rod, the opposite sides of the two frame bodies are fixedly provided with a second sliding rod, one end of the second sliding rod is fixedly connected with the inner wall of the two second housings, the outer sides of the two second sliding rods are movably provided with a second sliding block, one end of the second sliding block is movably connected with the inner top wall of the two second housings, the opposite sides of the two second sliding blocks are fixedly provided with a fourth buffer spring, one end of the fourth buffer spring is fixedly connected with the inner wall of the two second housings, and the bottoms of the two second sliding blocks are movably provided with a second connecting rod, one end of the second connecting rod is movably connected with the top of the two second moving plates.
[0009] Preferably, the first housing is provided with a first through hole on the left and right sides of the inner top wall, and the second housing is provided with a second through hole on the inner bottom wall.
[0010] Preferably, the first connecting rod is movably connected with the first sliding block and the first moving plate through the first rotating block.
[0011] Preferably, the second connecting rod is movably connected with the second sliding block and the second moving plate through the second rotating block.
[0012] (Three) beneficial effects
[0013] Compared with the prior art, the utility model provides a kind of electric face crane telescopic hydraulic speed regulation structure, with following beneficial effects:
[0014] The electric face crane telescopic hydraulic speed regulation structure, by setting first impact plate and two second impact plates, when piston block drives piston rod to move down to limit stroke, piston block will contact with first impact plate, to drive first moving plate to move down, to extrude two first buffer springs, simultaneously, two first connecting rods are used to drive two first sliding blocks to move relatively, to extrude second buffer spring, to buffer and slow down piston block and piston rod by the elastic force of buffer spring, similarly, when piston block drives piston rod to move up to limit stroke, piston block will contact with two second impact plates, to drive two second moving plates to move up, to extrude two third buffer springs, simultaneously, two second connecting rods are used to drive two second sliding blocks to move oppositely, to extrude two fourth buffer springs, to buffer and slow down piston block and piston rod by the elastic force of buffer spring, finally, limit stroke piston block is buffered, to slow down and protect piston rod, to improve the service life of hydraulic telescopic cylinder. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a structure schematic view of the utility model;
[0016] Figure 2 It is a structure schematic view of the utility model;
[0017] Figure 3 It is a structure schematic view of the utility model Figure 2 It is an enlarged view of A in the utility model;
[0018] Figure 4 It is a structure schematic view of the utility model Figure 2 It is an enlarged view of B in the utility model.
[0019] In the drawing: 1 crane main body, 2 lifting arm, 3 hydraulic cylinder body, 4 piston block, 5 piston rod, 6 first shell, 7 first moving plate, 8 first extension block, 9 first impact plate, 10 sleeve, 11 limit rod, 12 first buffer spring, 13 fixed block, 14 first buffer assembly, 141 first sliding rod, 142 first sliding block, 143 second buffer spring, 144 first connecting rod, 15 second shell, 16 second moving plate, 17 second extension block, 18 second impact plate, 19 frame body, 20 moving block, 21 third buffer spring, 22 second buffer assembly, 221 second sliding rod, 222 second sliding block, 223 fourth buffer spring, 224 second connecting rod. Specific implementation
[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0021] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a kind of electric front reacher telescopic hydraulic speed regulation structure, including crane main body 1, crane main body 1 top right side swing mounting has lifting arm 2, crane main body 1 top swing mounting has the hydraulic cylinder body 3 in the left side of lifting arm 2, crane main body 1 top fixed mounting has third rotating block, hydraulic cylinder body 3 is connected with the top of crane main body 1 swing by third rotating block, hydraulic cylinder body 3 inside swing mounting has piston block 4, the top of piston block 4 is fixedly installed with piston rod 5, one end extends to the top of hydraulic cylinder body 3 and is connected with lifting arm 2 swing, lifting arm 2 left side fixed mounting has fourth rotating block, piston rod 5 is connected with the left side of lifting arm 2 swing by fourth rotating block.
[0022] The inner bottom wall of the hydraulic cylinder body 3 is fixedly installed with a first shell 6, the inside of the first shell 6 is movably installed with a first moving plate 7, the top of the first moving plate 7 is fixedly installed with a first extension block 8 extending to the top of the first shell 6 on the left and right sides, the inner top wall of the first shell 6 is provided with a first through hole matched with the first extension block 8 on the left and right sides, the top of the left first extension block 8 is fixedly installed with a first impact plate 9 fixedly connected with the top of the right first extension block 8, the inner bottom wall of the first shell 6 is fixedly installed with a sleeve 10 on the left and right sides, the inside of the two sleeves 10 is movably installed with a limiting rod 11 extending to the top and fixedly connected with the bottom of the first moving plate 7.
[0023] The bottom of the first moving plate 7 and the inner bottom wall of the first shell 6 are fixedly installed with a first buffer spring 12 on the opposite sides of the two sleeves 10, the number of which is two and which is distributed left and right symmetrically, the inner bottom wall of the first shell 6 is fixedly installed with a fixed block 13 between the two first buffer springs 12, the number of which is two and which is distributed left and right symmetrically, a first buffer assembly 14 is fixedly installed between the two fixed blocks 13, one end of which is movably connected with the inner bottom wall of the first shell 6 and the other end of which is movably connected with the bottom of the first moving plate 7, the first buffer assembly 14 comprises a first sliding rod 141, the two fixed blocks 13 are fixedly installed with the first sliding rod 141, the left and right ends of the outer side of the first sliding rod 141 are movably installed with a first sliding block 142 movably connected with the inner bottom wall of the first shell 6, the inside of the two first sliding blocks 142 is provided with a first installation hole matched with the first sliding rod 141, the two first sliding blocks 142 are fixedly installed with a second buffer spring 143 sleeved on the outer side of the first sliding rod 141, the top of the two first sliding blocks 142 is movably installed with a first connecting rod 144 movably connected with the bottom of the first moving plate 7, the top of the two first sliding blocks 142 and the bottom of the first moving plate 7 are fixedly installed with a first rotating block, and the first connecting rod 144 is movably connected with the first sliding block 142 and the first moving plate 7 through the first rotating block.
[0024] The inner top wall of the hydraulic cylinder body 3 is fixedly installed with a second shell 15, the number of which is two and which is located on the left and right sides of the piston rod 5, the inside of the two second shells 15 is movably installed with a second moving plate 16, the bottom of the two second moving plates 16 is fixedly installed with a second extension block 17 extending to the bottom of the two second shells 15, the inner bottom wall of the two second shells 15 is provided with a second through hole matched with the second extension block 17, the bottom of the two second extension blocks 17 is fixedly installed with a second impact plate 18, the inner top wall of the two second shells 15 is fixedly installed with a frame 19, and the inside of the two frames 19 is movably installed with a moving block 20 extending to the bottom and fixedly connected with the top of the two second moving plates 16.
[0025] The inner top wall of the two second housings 15 is fixedly installed with third buffer springs 21 located at the opposite sides of the two frame bodies 19 and having one end fixedly connected with the top of the two second moving plates 16 respectively, the opposite sides of the two frame bodies 19 are fixedly installed with second buffer assemblies 22 having one end movably connected with the inner top wall of the two second housings 15 respectively and the other end movably connected with the top of the two second moving plates 16 respectively, the opposite sides of the two second buffer assemblies 22 are fixedly connected with the opposite inner walls of the two second housings 15 respectively, the second buffer assembly 22 comprises a second sliding rod 221, the opposite sides of the two frame bodies 19 are fixedly installed with second sliding rods 221 having one end fixedly connected with the opposite inner walls of the two second housings 15 respectively, the outer sides of the two second sliding rods 221 are movably installed with second sliding blocks 222 having one end movably connected with the inner top wall of the two second housings 15 respectively, the interiors of the two second sliding blocks 222 are provided with second installation holes matched with the second sliding rods 221, the opposite sides of the two second sliding blocks 222 are fixedly installed with fourth buffer springs 223 sleeved on the outer sides of the two second sliding rods 221 respectively and having one end fixedly connected with the opposite inner walls of the two second housings 15 respectively, the bottoms of the two second sliding blocks 222 are movably installed with second connecting rods 224 having one end movably connected with the top of the two second moving plates 16 respectively, the bottoms of the two second sliding blocks 222 and the top of the two second moving plates 16 are fixedly installed with second rotating blocks, and the second connecting rods 224 are movably connected with the second sliding blocks 222 and the second moving plates 16 through the second rotating blocks respectively.
[0026] Working principle: when the piston block 4 drives the piston rod 5 to move downward to the limit stroke, the piston block 4 will contact the first impact plate 9 to drive the first moving plate 7 to move downward to press the two first buffer springs 12, and also drive the two first sliding blocks 142 to move relatively through the two first connecting rods 144 to press the second buffer spring 143, so as to buffer and slow down the piston block 4 and the piston rod 5 through the elastic force of the buffer spring, then when the piston block 4 drives the piston rod 5 to move upward to the limit stroke, the piston block 4 will contact the two second impact plates 18 to drive the two second moving plates 16 to move upward to press the two third buffer springs 21, and also drive the two second sliding blocks 222 to move away from each other through the two second connecting rods 224 to press the two fourth buffer springs 223, so as to buffer and slow down the piston block 4 and the piston rod 5 through the elastic force of the buffer spring, finally, the piston rod 5 is slowed down and protected through buffering the piston block 4 at the limit stroke, thereby improving the service life of the hydraulic telescopic cylinder.
[0027] In conclusion, the telescopic hydraulic speed regulation structure of the electric reach stacker, by setting the first impact plate 9 and the two second impact plates 18, when the piston block 4 drives the piston rod 5 to move downward to the limit stroke, the piston block 4 will contact the first impact plate 9, thereby driving the first moving plate 7 to move downward to press the two first buffer springs 12, and at the same time, the two first connecting rods 144 will drive the two first sliding blocks 142 to move relatively to press the second buffer spring 143, thereby buffering and reducing the speed of the piston block 4 and the piston rod 5 through the elastic force of the buffer spring, and similarly, when the piston block 4 drives the piston rod 5 to move upward to the limit stroke, the piston block 4 will contact the two second impact plates 18, thereby driving the two second moving plates 16 to move upward to press the two third buffer springs 21, and at the same time, the two second connecting rods 224 will drive the two second sliding blocks 222 to move away from each other to press the two fourth buffer springs 223, thereby buffering and reducing the speed of the piston block 4 and the piston rod 5 through the elastic force of the buffer spring, finally, the piston rod 5 is protected by buffering the piston block 4 at the limit stroke, thereby improving the service life of the hydraulic telescopic cylinder, solving the problem that the existing reach stacker hydraulic cylinder has no buffer device to buffer at the limit stroke, which is easy to cause high pressure in the cylinder cavity when reaching the limit stroke, thereby reducing the service life of the hydraulic cylinder or even causing the cylinder to burst.
[0028] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Additionally, unless otherwise stated, the term "about" preceding a value or description denotes that the value or description is within 10%, preferably within 1%, and more preferably within 0.1% of the stated value or description.
[0029] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the embodiments change, modify, replace, and vary in many ways without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. An electric front-end crane telescopic hydraulic speed-regulating structure, comprising a crane body (1), a boom (2) disposed on the top right side of the crane body (1), a hydraulic cylinder body (3) disposed on the top of the crane body (1) and located on the left side of the boom (2), a piston block (4) disposed inside the hydraulic cylinder body (3), and a piston rod (5) disposed on the top of the piston block (4) extending to the top of the hydraulic cylinder body (3) and movably connected to the boom (2), characterized in that: The inner bottom wall of the hydraulic cylinder body (3) is provided with a first shell (6), the inside of the first shell (6) is provided with a first moving plate (7), the top of the first moving plate (7) is provided with a first extension block (8) extending to the top of the first shell (6) on the left and right sides, the top of the first extension block (8) on the left side is provided with a first impact plate (9) fixedly connected with the top of the first extension block (8) on the right side, the left and right sides of the inner bottom wall of the first shell (6) are provided with sleeves (10), the inside of the two sleeves (10) is provided with a limiting rod (11) extending to the top thereof and fixedly connected with the bottom of the first moving plate (7), the bottom of the first moving plate (7) and the inner bottom wall of the first shell (6) are provided with two first buffer springs (12) located on the opposite sides of the two sleeves (10) and symmetrically distributed on the left and right sides, the inner bottom wall of the first shell (6) is provided with two fixed blocks (13) located between the two first buffer springs (12) and symmetrically distributed on the left and right sides, a first buffer assembly (14) movably connected with the inner bottom wall of the first shell (6) at one end and movably connected with the bottom of the first moving plate (7) at the other end is arranged between the two fixed blocks (13), the inner top wall of the hydraulic cylinder body (3) is provided with two second shells (15) located on the left and right sides of the piston rod (5) respectively, the inside of the two second shells (15) is provided with a second moving plate (16), the bottom of the two second moving plates (16) is provided with a second extension block (17) extending to the bottom of the two second shells (15) respectively, the bottom of the two second extension blocks (17) is provided with a second impact plate (18), the inner top wall of the two second shells (15) is provided with a frame body (19), the inside of the two frame bodies (19) is provided with a moving block (20) extending to the bottom thereof at one end and fixedly connected with the top of the two second moving plates (16) respectively, the inner top wall of the two second shells (15) is provided with a third buffer spring (21) located on the opposite sides of the two frame bodies (19) and fixedly connected with the top of the two second moving plates (16) at one end respectively, the opposite sides of the two frame bodies (19) are provided with a second buffer assembly (22) movably connected with the inner top wall of the two second shells (15) at one end and movably connected with the top of the two second moving plates (16) at the other end respectively, the opposite sides of the two second buffer assemblies (22) are fixedly connected with the opposite inner walls of the two second shells (15) respectively.
2. The telescopic hydraulic speed regulation structure of an electric reach stacker according to claim 1, characterized in that: The first buffer assembly (14) comprises a first sliding rod (141), the first sliding rod (141) is fixedly installed between the two fixed blocks (13), the outer sides of the left and right ends of the first sliding rod (141) are movably installed with first sliding blocks (142) which are movably connected with the inner bottom walls of the first shell (6), the second buffer springs (143) are fixedly installed between the two first sliding blocks (142) and are sleeved on the outer sides of the first sliding rod (141), the top portions of the two first sliding blocks (142) are movably installed with first connecting rods (144) which are movably connected with the bottoms of the first moving plates (7).
3. The telescopic hydraulic speed regulating structure of the electric reach stacker according to claim 1, characterized in that: The second buffer assembly (22) comprises a second sliding rod (221), the opposite sides of the two frame bodies (19) are fixedly installed with second sliding rods (221) which are fixedly connected with the opposite inner walls of the two second shells (15), the outer sides of the two second sliding rods (221) are movably installed with second sliding blocks (222) which are movably connected with the inner top walls of the two second shells (15), the opposite sides of the two second sliding blocks (222) are fixedly installed with fourth buffer springs (223) which are sleeved on the outer sides of the two second sliding rods (221) and are fixedly connected with the opposite inner walls of the two second shells (15), and the bottoms of the two second sliding blocks (222) are movably installed with second connecting rods (224) which are movably connected with the tops of the two second moving plates (16).
4. The telescopic hydraulic speed regulating structure of the electric reach stacker according to claim 1, characterized in that: The inner top walls of the first shell (6) are provided with first through holes which are matched with the first extension blocks (8), and the inner bottom walls of the two second shells (15) are provided with second through holes which are matched with the second extension blocks (17).
5. The telescopic hydraulic speed regulating structure of the electric reach stacker according to claim 2, characterized in that: The top portions of the two first sliding blocks (142) and the bottoms of the first moving plates (7) are fixedly installed with first rotating blocks, and the first connecting rods (144) are movably connected with the first sliding blocks (142) and the first moving plates (7) through the first rotating blocks.
6. The telescopic hydraulic speed regulating structure of the electric reach stacker according to claim 3, characterized in that: The bottoms of the two second sliding blocks (222) and the tops of the two second moving plates (16) are fixedly installed with second rotating blocks, and the second connecting rods (224) are movably connected with the second sliding blocks (222) and the second moving plates (16) through the second rotating blocks.