Scissor fork type lifting platform with anti-falling structure

Abstract

The utility model discloses a scissor fork type lifting platform with an anti-falling structure, which is characterized in that two platform connecting parts are arranged and are respectively and symmetrically arranged on two sides of a platform plate; the balance connecting plate is fixedly installed on the two platform connecting parts and is horizontally arranged all the time. The number of the supporting sleeves is two, the two supporting sleeves are symmetrically arranged on the two sides of the base respectively, guide cylinder cavities are formed in the supporting sleeves, piston parts are arranged at the bottoms of the auxiliary supporting rods, the auxiliary supporting rods on the two sides are slidably inserted into the corresponding supporting sleeves respectively, and the piston parts are in airtight fit with the inner walls of the guide cylinder cavities. A pressure maintaining air cylinder structure is formed between the piston part and the guide cylinder cavity; the air pump device is connected to the pressure maintaining air cylinder structures of the two supporting sleeves. And an auxiliary supporting structure independent of the oil cylinder shear fork driving device is arranged, lifting assistance, stability assistance and anti-falling protection can be carried out on the platform, and the stability and reliability of equipment are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting platforms, in particular to a scissor-type lifting platform with an anti-falling structure. Background Art

[0002] A lifting platform is a vertical lifting device used to transport goods. Lifting platforms are mostly used in factories and equipment maintenance. Currently, most lifting platforms use hydraulic cylinders to provide lifting power. They have a large lifting force and are mainly used in industrial production.

[0003] However, after long-term use, the lifting platform driven by the hydraulic cylinder is prone to tilting, shaking and other unstable conditions due to the pressure release of the cylinder, so it is necessary to improve it. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a scissor-type lifting platform with an anti-fall structure, in which an auxiliary support structure is arranged on the side of the platform to reduce the probability of the platform falling and improve the stability and reliability of the lifting platform equipment.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is: a scissor-type lifting platform with an anti-fall structure, including a platform plate and a base, a scissor bracket is arranged between the platform plate and the base, the scissor bracket is installed with a hydraulic cylinder driving device, an auxiliary support structure is arranged on the side of the base, the auxiliary support structure includes an air pump device, a support sleeve, a platform connection part, a balance connection plate and auxiliary support rods respectively connected to both sides of the balance connection plate, the number of platform connection parts is two, and the two platform connection parts are symmetrically arranged on both sides of the platform plate; the balance connection plate is fixedly installed on the two platform connection parts and is always arranged horizontally; the number of support sleeves is two, and the two support sleeves are symmetrically arranged on both sides of the base, and a guide cylinder cavity is arranged inside the support sleeve, and a piston part is arranged at the bottom of the auxiliary support rod, and the auxiliary support rods on both sides are respectively slidably inserted into the corresponding support sleeves, the piston part and the inner wall of the guide cylinder cavity are airtightly matched, and a pressure-maintaining cylinder structure is formed between the piston part and the guide cylinder cavity; the air pump device is respectively connected to the pressure-maintaining cylinder structure of the two support sleeves.

[0006] In a further technical solution, the air pump device is provided with a pressure relief valve, and the pressure relief valve is an electronic pressure relief valve.

[0007] In a further technical solution, the platform connecting part is arranged to protrude laterally, and a connecting rod is provided on the platform connecting part, and the connecting rod is fixed to the upper surface of the platform connecting part; a set of holes is provided on both sides of the balancing connecting plate, and the balancing connecting plate is connected to the connecting rods on both sides through the holes on both sides, and is fastened and installed by bolts.

[0008] In a further technical solution, a leveling connecting plate is provided at the bottom of the balancing connecting plate, and additional holes are respectively opened on both sides of the leveling connecting plate, and the leveling connecting plate is connected to the corresponding connecting rod through the holes on both sides; a leveling nut is provided at the middle and upper part of the connecting rod, and the leveling nut is threadedly connected to the connecting rod and acts on the bottom surface of the leveling connecting plate to realize the horizontal setting of the leveling connecting plate; the bottom surface of the balancing connecting plate is tightly matched with the upper surface of the leveling connecting plate, and is locked by a nut.

[0009] In a further technical solution, the scissors-type bracket includes two groups of symmetrically arranged fork arm assemblies, each group of fork arm assemblies includes two support arm units connected by hinges; the hydraulic cylinder driving device includes a cylinder driving bracket and a driving cylinder, the cylinder driving bracket is provided with an upper cross arm and a lower cross arm, the two ends of the upper cross arm are respectively rotatably connected to the support arm units of one of the fork arm assemblies on both sides, and the two ends of the lower cross arm are respectively rotatably connected to the other support arm units of the fork arm assemblies on both sides; one end of the driving cylinder is hinged to the upper cross arm, and the other end is hinged to the lower cross arm.

[0010] In a further technical solution, the number of driving cylinders is an even number, each driving cylinder is evenly distributed on both sides of the cylinder driving bracket, and each driving cylinder is connected to a hydraulic supply device.

[0011] In a further technical solution, it also includes a mobile structure, which includes a mobile slide rail and a mobile trolley. There are two mobile slide rails, and the two mobile slide rails are respectively arranged in parallel; the base is fixedly installed on the upper surface of the mobile trolley, and slide wheels are provided on both sides of the mobile trolley. Each slide wheel is respectively rollingly connected to the corresponding mobile slide rail. A mobile drive device is provided at the bottom of the mobile trolley, and the mobile drive device is transmission-connected to the slide wheels.

[0012] In a further technical solution, two rotating shaft rods are provided at the bottom of the mobile trolley, and a slide wheel is installed at the end of each of the two rotating shaft rods, and a passive sprocket is installed on any one of the rotating shaft rods; a driving motor is also provided at the bottom of the mobile trolley, and a driving sprocket is installed on the output shaft of the driving motor, and a transmission chain is provided between the driving sprocket and the passive sprocket sleeve.

[0013] In a further technical solution, a staircase is provided on the side of the movable slide rail, and the staircase is located on one side of the movable trolley of the movable slide rail.

[0014] In a further technical solution, the top surface of the platform plate is surrounded by a guardrail structure, and an upper and lower opening is left on one side of the guardrail structure, and the upper and lower opening and the ascending and descending stairs are located on the same side.

[0015] After adopting the above structure, the advantages of the utility model compared with the prior art are as follows: the utility model provides a scissor-type lifting platform with an anti-falling structure, by arranging a pneumatic auxiliary support structure on the side of the lifting platform, forming a mutually independent supporting power structure with the hydraulic cylinder drive device, when the hydraulic cylinder support structure fails and falls, the auxiliary support structure can play a supporting role to prevent the lifting platform from falling; the auxiliary support structure can improve the stability of the platform, reduce the shaking of the platform, and improve the stability of the operator during operation; the pneumatic auxiliary support structure assists in driving the lifting platform to rise, thereby improving the lifting efficiency and load-bearing performance of the platform; the equipment is provided with a moving structure to realize the movable operation or platform displacement of the lifting platform, thereby further improving the practicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a structural schematic diagram of the lifting platform in the utility model.

[0019] Figure 3 It is a structural schematic diagram of the lifting platform in the utility model from another perspective. DETAILED DESCRIPTION

[0020] The following are only preferred embodiments of the present invention, and do not limit the protection scope of the present invention.

[0021] like Figures 1 to 3As shown, a scissor-type lifting platform with an anti-falling structure includes a platform plate 11 and a base 13, a scissor bracket 12 is arranged between the platform plate 11 and the base 13, a hydraulic cylinder driving device is installed on the scissor bracket 12, and an auxiliary support structure 5 is arranged on the side of the base 13. The auxiliary support structure 5 includes an air pump device 50, a support sleeve 51, a platform connecting part 55, a balancing connecting plate 52 and auxiliary support rods respectively connected to both sides of the balancing connecting plate 52. The number of platform connecting parts 55 is two, and the two platform connecting parts 55 are symmetrically arranged on both sides of the platform plate 11; The balance connecting plate 52 is fixedly mounted on the two platform connecting parts 55 and is always arranged horizontally; there are two supporting sleeves 51, which are symmetrically arranged on both sides of the base 13, and the interior of the supporting sleeve 51 is provided with a guide cylinder cavity, and the bottom of the auxiliary supporting rod is provided with a piston part, and the auxiliary supporting rods on both sides are slidably inserted into the corresponding supporting sleeves 51, respectively, and the piston part is airtightly matched with the inner wall of the guide cylinder cavity, and a pressure-maintaining cylinder structure is formed between the piston part and the guide cylinder cavity; the air pump device 50 is respectively connected to the pressure-maintaining cylinder structures of the two supporting sleeves 51. The air pump device 50 is provided with a pressure relief valve, and the pressure relief valve uses an electronic pressure relief valve.

[0022] The principle is that when the platform plate 11 is driven to rise by the scissor bracket 12, at the same time, the air pump device 50 is turned on and enabled, and the auxiliary support structure 5 assists the platform plate 11 to rise; after reaching the target height, the air pump device 50 stops working and guides the cylinder cavity to maintain pressure, so that the auxiliary support rods on both sides can assist in supporting the platform plate 11, so as to improve the stability of the platform plate 11, and when the hydraulic cylinder fails, it can support the platform plate 11 to avoid falling.

[0023] This lifting platform 1 with two independent supporting structures has other advantages: for example, by arranging a pneumatic auxiliary supporting structure on the side of the lifting platform, a supporting power structure independent of the hydraulic cylinder drive device is formed. When the hydraulic cylinder support structure fails and falls, the auxiliary supporting structure can play a supporting role to prevent the lifting platform 1 from falling; the auxiliary supporting structure can improve the stability of the platform, reduce the shaking of the platform, and improve the stability of the operator during operation; the pneumatic auxiliary supporting structure assists in driving the lifting platform 1 to rise, thereby improving the platform's rising efficiency and load-bearing performance.

[0024] Specifically, the platform connecting portion 55 is arranged to protrude laterally, and is provided with a connecting rod 54, which is fixed to the upper surface of the platform connecting portion 55; a set of holes is respectively provided on both sides of the balancing connecting plate 52, and the balancing connecting plate 52 is connected to the connecting rods 54 on both sides through the holes on both sides, and is fastened and installed by bolts.

[0025] Specifically, a leveling connecting plate 53 is provided at the bottom of the balancing connecting plate 52, and additional sleeve holes are respectively opened on both sides of the leveling connecting plate 53. The leveling connecting plate 53 is sleeved on the corresponding connecting rod 54 through the sleeve holes on both sides; a leveling nut is provided at the middle and upper part of the connecting rod 54, and the leveling nut is threadedly connected to the connecting rod 54, and acts on the bottom surface of the leveling connecting plate 53 to achieve a horizontal setting of the leveling connecting plate 53; the bottom surface of the balancing connecting plate 52 is tightly matched with the upper surface of the leveling connecting plate 53, and is locked by a nut.

[0026] Specifically, the scissors-type fork bracket 12 includes two groups of symmetrically arranged fork arm assemblies, and each group of fork arm assemblies includes two support arm units connected by hinges; the hydraulic cylinder driving device includes a cylinder driving bracket 122 and a driving cylinder 121, and the cylinder driving bracket 122 is provided with an upper cross arm and a lower cross arm, and the two ends of the upper cross arm are respectively rotatably connected to the support arm units of one of the fork arm assemblies on both sides, and the two ends of the lower cross arm are respectively rotatably connected to the other support arm units of the fork arm assemblies on both sides; one end of the driving cylinder 121 is hinged to the upper cross arm, and the other end is hinged to the lower cross arm.

[0027] Specifically, the number of the driving cylinders 121 is an even number, and each driving cylinder 121 is evenly distributed on both sides of the cylinder driving bracket 122, and each driving cylinder 121 is connected to the oil pressure supply device 012.

[0028] The lifting platform 1 of this embodiment is also provided with a moving structure, which enables the lifting platform 1 to adjust its position and transfer the position of the operator. The device is provided with a moving structure to realize the movable operation or platform displacement of the lifting platform, further improving the practicality of the device.

[0029] Specifically, it also includes a mobile structure, which includes a mobile slide rail 3 and a mobile trolley 2. The number of the mobile slide rails 3 is two, and the two mobile slide rails 3 are respectively arranged in parallel; the base 13 is fixedly installed on the upper surface of the mobile trolley 2, and slide wheels 21 are provided on both sides of the mobile trolley 2. Each slide wheel 21 is respectively rollingly connected to the corresponding mobile slide rail 3. A mobile driving device is provided at the bottom of the mobile trolley 2, and the mobile driving device is transmission-connected to the slide wheel 21.

[0030] Specifically, two rotating shaft rods 021 are provided at the bottom of the mobile car 2, and a slide wheel 21 is installed at the end of each of the two rotating shaft rods 021, and a passive sprocket 024 is installed on any one of the rotating shaft rods 021; a driving motor 022 is also provided at the bottom of the mobile car, and a driving sprocket 023 is installed on the output shaft of the driving motor 022, and a transmission chain is provided between the driving sprocket 023 and the passive sprocket 024.

[0031] Specifically, a side portion of the movable slide rail 3 is provided with an ascending and descending staircase 4 , and the ascending and descending staircase 4 is located on one side of the movable slide rail 3 and the movable trolley 2 .

[0032] Specifically, the top surface of the platform plate 11 is surrounded by a guardrail structure 011 , and an upper and lower opening is left on one side of the guardrail structure 011 , and the upper and lower opening and the ascending and descending stairs 4 are located on the same side.

[0033] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A scissor-type lifting platform with an anti-fall structure, comprising a platform plate (11) and a base (13), a scissor bracket (12) is provided between the platform plate (11) and the base (13), and a hydraulic cylinder driving device is installed on the scissor bracket (12), characterized in that: An auxiliary support structure (5) is provided on the side of the base (13), and the auxiliary support structure (5) comprises an air pump device (50), a support sleeve (51), a platform connection part (55), a balancing connection plate (52), and auxiliary support rods respectively connected to both sides of the balancing connection plate (52). The number of platform connection parts (55) is two, and the two platform connection parts (55) are symmetrically arranged on both sides of the platform plate (11); the balancing connection plate (52) is fixedly mounted on the two platform connection parts (55) and is always horizontal. Setting: There are two supporting sleeves (51), and the two supporting sleeves (51) are symmetrically arranged on both sides of the base (13). A guiding cylinder cavity is arranged inside the supporting sleeve (51), and a piston portion is arranged at the bottom of the auxiliary supporting rod. The auxiliary supporting rods on both sides are slidably inserted into the corresponding supporting sleeves (51), and the piston portion is airtightly matched with the inner wall of the guiding cylinder cavity, and a pressure-maintaining cylinder structure is formed between the piston portion and the guiding cylinder cavity; the air pump device (50) is respectively connected to the pressure-maintaining cylinder structures of the two supporting sleeves (51).

2. A scissor-type lifting platform with an anti-falling structure according to claim 1, characterized in that: The air pump device (50) is provided with a pressure relief valve, and the pressure relief valve is an electronic pressure relief valve.

3. A scissor-type lifting platform with an anti-falling structure according to claim 2, characterized in that: The platform connecting portion (55) is arranged to protrude laterally, and is provided with a connecting rod (54), and the connecting rod (54) is fixed to the upper surface of the platform connecting portion (55); a set of holes is respectively provided on both sides of the balancing connecting plate (52), and the balancing connecting plate (52) is sleeved on the connecting rods (54) on both sides through the sleeve holes on both sides, and is fastened and installed by bolts.

4. The scissor-type lifting platform with an anti-falling structure according to claim 3 is characterized in that: A leveling connecting plate (53) is provided at the bottom of the balancing connecting plate (52), and other sleeve holes are respectively opened on both sides of the leveling connecting plate (53), and the leveling connecting plate (53) is sleeved on the corresponding connecting rod (54) through the sleeve holes on both sides; a leveling nut is provided at the middle and upper part of the connecting rod (54), and the leveling nut is threadedly connected to the connecting rod (54) and acts on the bottom surface of the leveling connecting plate (53) to achieve the horizontal setting of the leveling connecting plate (53); the bottom surface of the balancing connecting plate (52) is tightly matched with the upper surface of the leveling connecting plate (53) and is locked by a nut.

5. The scissor-type lifting platform with an anti-falling structure according to claim 1, characterized in that: The scissor-type fork support (12) comprises two groups of symmetrically arranged fork arm assemblies, each group of fork arm assemblies comprises two support arm units connected by hinges; the hydraulic cylinder driving device comprises a cylinder driving support (122) and a driving cylinder (121); the cylinder driving support (122) is provided with an upper cross arm and a lower cross arm, the two ends of the upper cross arm are respectively rotatably connected to the support arm units of one of the fork arm assemblies on both sides, and the two ends of the lower cross arm are respectively rotatably connected to the support arm units of the other of the fork arm assemblies on both sides; one end of the driving cylinder (121) is hinged to the upper cross arm, and the other end is hinged to the lower cross arm.

6. The scissor-type lifting platform with an anti-falling structure according to claim 5, characterized in that: The number of the driving cylinders (121) is an even number, and each driving cylinder (121) is evenly distributed on both sides of the cylinder driving bracket (122), and each driving cylinder (121) is connected to a hydraulic supply device (012).

7. The scissor-type lifting platform with an anti-falling structure according to claim 1, characterized in that: The invention also comprises a mobile structure, wherein the mobile structure comprises a mobile slide rail (3) and a mobile trolley (2), wherein the number of the mobile slide rails (3) is two, and the two mobile slide rails (3) are respectively arranged in parallel; the base (13) is fixedly mounted on the upper surface of the mobile trolley (2), and slide rail wheels (21) are arranged on both sides of the mobile trolley (2), and each slide rail wheel (21) is respectively rollingly connected to the corresponding mobile slide rail (3); a mobile driving device is arranged at the bottom of the mobile trolley (2), and the mobile driving device is transmission-connected to the slide rail wheels (21).

8. The scissor-type lifting platform with an anti-falling structure according to claim 7, characterized in that: The bottom of the movable vehicle (2) is provided with two rotating shaft rods (021), and the ends of the two rotating shaft rods (021) are respectively installed with a slide wheel (21), and any one of the rotating shaft rods (021) is installed with a passive sprocket (024); the bottom of the movable vehicle is also provided with a driving motor (022), and the output shaft of the driving motor (022) is installed with a driving sprocket (023), and the driving sprocket (023) and the passive sprocket (024) are sleeved with a transmission chain.

9. The scissor-type lifting platform with an anti-falling structure according to claim 8, characterized in that: A staircase (4) is provided on the side of the movable slide rail (3), and the staircase (4) is located on one side of the movable trolley (2) on the principle of the movable slide rail (3).

10. The scissor-type lifting platform with an anti-falling structure according to claim 9, characterized in that: The top surface of the platform plate (11) is surrounded by a guardrail structure (011), and an upper and lower opening is left on one side of the guardrail structure (011), and the upper and lower opening is located on the same side as the ascending and descending stairs (4).

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