Easily-operated lifting device suitable for narrow space

Abstract

The invention discloses an easy-to-operate lifting device suitable for a narrow space, and relates to the technical field of lifting equipment, a plurality of groups of gallows lifting mechanisms are arranged at the upper end of a frame of a supporting frame, a guide rail of a guide sliding rail is slidably connected with a guide sliding table, and a supporting platform is arranged at the upper end of a rack of the guide sliding table; and a chain transmission mechanism for driving the gallows lifting mechanism is arranged at the upper end of the supporting platform. According to the design, based on integrated assembly of the multiple groups of gallows lifting mechanisms, under linkage transmission of the chain transmission mechanism, the multiple groups of gallows lifting mechanisms are pushed to lift in an independent lifting mode in an integrated linkage mode, the state of independent operation and linkage lifting is formed, mechanical equipment is lifted and shored, the occupied space of lifting in the gallows mode is smaller, and the lifting efficiency is improved. The lifting mechanism is suitable for various complex space environments, the self-stability of independent lifting is better, the influence of other parts is smaller, the state is more stable, and the conditions of shaking and the like caused by overall linkage lifting can be reduced.

Description

Technical Field

[0001] The invention relates to the field of lifting equipment, and in particular to an easy-to-operate lifting device suitable for narrow spaces. Background Art

[0002] With the development of social technology and the progress of industrial production, lifting platforms are widely used in the field of industrial production. Various lifting platforms play an extremely important role in the assembly of mechanical equipment or the height adjustment of instruments. Especially in the field of industrial technology, many mechanical products must maintain a relatively high working posture during use, and often need to lower the height and center of gravity during transportation or standby. In order to achieve frequent changes in height, a lifting device is required.

[0003] In the actual working environment: due to the different sizes of mechanical equipment, their working space is limited, so many lifting devices cannot adapt to small space operations. Secondly, since many mechanical products need to maintain a high working posture, when the lifting device lifts the mechanical equipment to a high position, the vibration generated by the mechanical equipment during operation will also affect the stability of the lifting device. To this end, those skilled in the art provide an easy-to-operate lifting device suitable for narrow spaces to solve the problems raised in the above background technology. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an easy-to-operate lifting device suitable for narrow spaces, which solves the problem of the existing mechanical equipment lifting device mentioned in the above background technology, that the lifting device occupies a large space and the lifting top support has poor stability.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an easy-to-operate lifting device suitable for narrow spaces, comprising a bottom support frame and a support frame installed in the middle of the bottom support frame bracket;

[0006] A plurality of gallows lifting mechanisms are arranged on the upper end of the support frame;

[0007] A guide rail is provided on one side of the bracket of the bottom support frame, and the guide rail of the guide rail is slidably connected with a guide slide, a support platform is provided on the upper end of the frame of the guide slide, and a chain transmission mechanism for driving the gallows lifting mechanism is provided on the upper end of the support platform;

[0008] The inner frame of the support frame is symmetrically equipped with an electric telescopic rod connected to the support platform.

[0009] As a further technical solution of the present invention: the gallows lifting mechanism includes lifting gallows that are symmetrically arranged, and the two groups of lifting gallows that are opposite to each other up and down are connected by two groups of lifting wire sleeves that are horizontally symmetrically arranged, and a lifting screw rod is screwed through the inside of the shaft sleeve of the lifting wire sleeve, and a transmission sprocket is arranged at one end of the shaft rod of the lifting screw rod.

[0010] As a further technical solution of the present invention: the lifting screw rod is bounded by a center line, and positive and negative thread teeth matching the two groups of lifting screw sleeves are symmetrically arranged on both sides of the center line.

[0011] As a further technical solution of the present invention: the winding shaft of the lifting gallows is installed with a connecting seat, and the support of the connecting seat is symmetrically provided with a rotating shaft opposite to the winding shaft of the lifting gallows, and the two sets of rotating shafts opposite to each other are driven by mutually meshing gears.

[0012] As a further technical solution of the present invention: the chain transmission mechanism includes a support seat installed on the upper end of the support platform, a brake motor is installed in the middle of the support seat, and a transmission shell is installed on one side of the support seat, a transmission chain driving the gallows lifting mechanism extends from the middle of the shell of the transmission shell, a brake sprocket for driving the transmission chain is provided at the output end of the brake motor, lifting slide rails are symmetrically provided on both sides of the shell of the transmission shell, the guide rails of each group of the lifting slide rails are slidably connected with a lifting slide, and a tensioning sprocket for tensioning the transmission chain is provided in the middle of the frame of the lifting slide, and a lifting linkage component for pushing the tensioning sprocket is provided inside the shell of the transmission shell along the output shaft direction of the brake motor.

[0013] As a further technical solution of the present invention: the lifting linkage assembly includes a transmission screw installed inside the transmission housing along the direction of the output shaft of the brake motor, a transmission guide rod is installed directly below the transmission screw, and a transmission slide guided by the transmission guide rod is symmetrically sleeved on the outer side of the shaft of the transmission screw, and an arm pull rod connected to the tensioning sprocket is provided at the upper end of the frame of each group of the transmission slides.

[0014] As a further technical solution of the present invention: a bevel gear A is provided at the output end of the brake motor, and a bevel gear B meshing with the bevel gear A is provided at the middle of the shaft of the transmission screw.

[0015] As a further technical solution of the present invention: the transmission screw rod is bounded by a center line, and positive and negative threads matching the two groups of transmission slides are symmetrically arranged on both sides of the center line.

[0016] The present invention provides an easy-to-operate lifting device suitable for narrow spaces, which has the following beneficial effects compared with the prior art:

[0017] The lifting device of the present invention is based on the integrated assembly of multiple gallows lifting mechanisms as a lifting platform, and then under the linkage transmission of the chain transmission mechanism, the multiple gallows lifting mechanisms are pushed to lift independently and linkage-lift as a whole, forming a state of independent operation and linkage lifting, which provides lifting support for mechanical equipment. The lifting of the gallows form occupies less space and is suitable for various complex spatial environments. The independent lifting has better self-stability, is less affected by other components, and has a more stable state. It can reduce the shaking caused by the overall linkage lifting and improve the lifting stability and firmness. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an easy-to-operate lifting device suitable for narrow spaces;

[0019] Figure 2 It is a left view of an easy-to-operate lifting device suitable for narrow spaces;

[0020] Figure 3 It is a structural schematic diagram of a gallows lifting mechanism in an easy-to-operate lifting device suitable for narrow spaces;

[0021] Figure 4 It is a structural schematic diagram of a chain transmission mechanism in an easy-to-operate lifting device suitable for narrow spaces;

[0022] Figure 5 A partial cross-sectional view of a chain transmission mechanism in an easy-to-operate lifting device suitable for narrow spaces.

[0023] In the figure: 1. bottom support frame; 2. support frame; 3. gallows lifting mechanism; 31. lifting gallows; 32. connecting seat; 33. rotating shaft; 34. matching gear; 35. lifting wire sleeve; 36. lifting screw rod; 37. transmission sprocket; 4. transmission shell; 5. transmission chain; 6. guide rail; 7. guide slide; 8. support platform; 9. electric telescopic rod; 10. support seat; 11. brake motor; 12. brake sprocket; 13. first traction sprocket; 14. second traction sprocket; 15. tensioning sprocket; 16. bevel gear A; 17. bevel gear B; 18. transmission screw rod; 19. transmission guide rod; 20. transmission slide; 21. arm pull rod; 22. lifting slide; 23. lifting rail. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-5 The present invention provides a technical solution for an easy-to-operate lifting device suitable for narrow spaces: an easy-to-operate lifting device suitable for narrow spaces, comprising a bottom support frame 1 and a support frame 2 installed in the middle of the bottom support frame 1, a guide slide rail 6 is arranged on one side of the bottom support frame 1, and the guide rail of the guide slide rail 6 is slidably connected to a guide slide 7, a support platform 8 is arranged on the upper end of the frame of the guide slide 7, an inner frame of the support frame 2 is symmetrically provided with an electric telescopic rod 9 connected to the support platform 8, when the gallows lifting mechanism 3 is folded and extended, the telescopic brake of the electric telescopic rod 9 is utilized to push the support platform 8 to slide along the guide rail of the guide slide rail 6, and the initial position of the chain transmission mechanism is adjusted to match the lifting screw rod 36 in the gallows lifting mechanism 3, and the lifting screw rod 36 is replaced and matched to maintain a suitable length to adapt to the narrow space on site, and when the replaced lifting screw rod 36 is shorter, although the lifting height of the gallows lifting mechanism 3 is limited, the number of gallows lifting mechanisms 3 can be increased to ensure its lifting and supporting performance, and flexibly match the on-site environment.

[0026] A plurality of gallows lifting mechanisms 3 are arranged at the upper end of the frame of the support frame 2. The gallows lifting mechanisms 3 include lifting gallows 31 that are symmetrically arranged, and the two upper and lower opposite lifting gallows 31 are connected by two groups of lifting wire sleeves 35 that are horizontally symmetrically arranged. A lifting screw rod 36 is threadedly connected to the shaft sleeve of the lifting wire sleeve 35, and a transmission sprocket 37 is arranged at one end of the shaft rod of the lifting screw rod 36. The lifting screw rod 36 is bounded by a center line, and positive and negative wire teeth that are compatible with the two groups of lifting wire sleeves 35 are symmetrically arranged on both sides of the center line. When the transmission chain 5 drives the transmission sprocket 37 to rotate, the lifting screw rod 36 is driven to rotate synchronously. The transmission combination of the positive and negative wire teeth on the lifting screw rod 36 and the two groups of lifting wire sleeves 35 is used to convert the rotational force into a horizontal thrust, so as to push the lifting gallows 31 to fold and rotate. The extension, retraction and expansion of the lifting gallows 31 are used as a lifting component to push the mechanical equipment to lift and displace.

[0027] The winding shaft of the lifting gallows 31 is installed with a connecting seat 32, and the support of the connecting seat 32 is symmetrically provided with a rotating shaft 33 opposite to the winding shaft of the lifting gallows 31. The two sets of rotating shafts 33 opposite to each other are driven in pairs through mutually meshing matching gears 34. When the lifting gallows 31 is folded and rotated, the rotating shaft 33 on its winding shaft is driven to rotate synchronously. While the two sets of rotating shafts 33 opposite to each other rotate symmetrically, the symmetrical meshing of the matching gears 34 on their shafts can be used as passive locking components. When the lifting gallows 31 stops extending, it plays a meshing locking role to improve the stability of the folding and extension of the lifting gallows 31.

[0028] A chain transmission mechanism for driving the gallows lifting mechanism 3 is arranged at the upper end of the support platform 8, and the chain transmission mechanism includes a support seat 10 installed at the upper end of the support platform 8, a brake motor 11 is installed in the middle of the support seat 10, and a transmission shell 4 is installed on one side of the support seat 10, and a transmission chain 5 for driving the gallows lifting mechanism 3 extends from the middle of the shell of the transmission shell 4, and a brake sprocket 12 for driving the transmission chain 5 is arranged at the output end of the brake motor 11, and lifting rails 23 are symmetrically arranged on both sides of the shell of the transmission shell 4, and the guide rails of each group of lifting rails 23 are slidably connected with a lifting slide 22, and a tensioning sprocket wheel 15 for tensioning the transmission chain 5 is arranged in the middle of the frame of the lifting slide 22, and the brake is driven by controlling the operation of the brake motor 11. The sprocket 12 rotates and serves as a power source to drive the transmission chain 5 to rotate. While the transmission chain 5 rotates, it drives the gallows lifting mechanism 3 to lift and lower. When multiple groups of gallows lifting mechanisms 3 are lifted and lowered as a whole, since the transmission chain 5 is synchronously extended or retracted with the lifting and lowering of the gallows lifting mechanism 3, the linkage operation of the lifting linkage assembly is utilized to push the tensioning sprocket 15 to lift and lower synchronously. Under the traction of the first traction sprocket 13 and the second traction sprocket 14, when the transmission chain 5 is extended, the tensioning sprocket 15 moves downward to provide sufficient chain length for the extension of the transmission chain 5. When the transmission chain 5 is contracted, the tensioning sprocket 15 moves upward to tension the excess transmission chain 5 after retraction and extension, so that the transmission chain 5 always maintains a suitable tension state for transmission.

[0029] A lifting linkage assembly for pushing the tensioning sprocket 15 is arranged inside the transmission housing 4 along the output shaft direction of the brake motor 11. The lifting linkage assembly includes a transmission screw 18 installed inside the transmission housing 4 along the output shaft direction of the brake motor 11. A transmission guide rod 19 is installed directly below the transmission screw 18, and a transmission slide 20 guided by the transmission guide rod 19 is symmetrically sleeved on the outer side of the shaft of the transmission screw 18. A bevel gear A16 is arranged at the output end of the brake motor 11, and a bevel gear A16 is arranged in the middle of the shaft of the transmission screw 18. 6-phase meshing bevel gears B17, the transmission screw 18 is bounded by the center line, and the two sides of the center line are symmetrically provided with positive and negative threads adapted to the two sets of transmission slides 20. When the brake motor 11 is working, it drives the bevel gear A16 to rotate, and utilizes the meshing transmission of the bevel gear A16 and the bevel gear B17 to drive the transmission screw 18 to rotate. During the rotation of the transmission screw 18, its positive and negative threads are utilized to push the two relative sets of transmission slides 20 to slide symmetrically along the direction of the transmission guide rod 19, which serves as a power source to push the tensioning sprocket wheel 15 to lift and brake.

[0030] The upper end of the frame of each group of transmission slides 20 is provided with an arm force pull rod 21 connected to the tensioning sprocket 15. When the transmission slide 20 slides symmetrically, the arm force of the arm force pull rod 21 converts the horizontal thrust into the longitudinal thrust, and pushes the combination of the tensioning sprocket 15 and the lifting slide 22 to slide and lift along the guide rail of the lifting slide rail 23. The lifting and lowering of the tensioning sprocket 15 is used to adjust the tensioning state of the transmission chain 5 in real time, so that the transmission chain 5 maintains a suitable tensioning state, and drives the lifting and lowering operation of multiple groups of gallows lifting mechanisms 3.

[0031] The working principle of the present invention is: when the lifting device is used as a lifting platform for mechanical equipment, the mechanical equipment can be mounted on the top gallows lifting mechanism 3, and the lifting device in the form of a gallows is used as a top support tooling for the mechanical equipment to adapt to the complex and changeable installation environment on site;

[0032] When the lifting device is used to lift and support the mechanical equipment, the brake motor 11 is controlled to work, driving the brake sprocket 12 to rotate as a power source, driving the transmission chain 5 to rotate, and while the transmission chain 5 rotates, it drives the transmission sprocket 37 in the gallows lifting mechanism 3 to rotate, and then drives the lifting screw 36 to rotate synchronously, and uses the transmission combination of the positive and negative threads on the lifting screw 36 and the two sets of lifting screw sleeves 35 to convert the rotational force into horizontal thrust, and promote the lifting gallows 31 to fold and rotate, and use the extension and retraction of the lifting gallows 31 as a lifting component to promote the lifting and displacement of the mechanical equipment, and then use the drive of the transmission chain 5 to perform independent integrated lifting and driving work on multiple sets of gallows lifting mechanisms 3;

[0033] When the multiple gallows lifting mechanisms 3 are lifted and lowered as a whole, the transmission chain 5 needs to be extended or retracted synchronously with the lifting and lowering of the gallows lifting mechanisms 3 to drive the multiple gallows lifting mechanisms 3 in real time. Therefore, when the transmission chain 5 is transmitted, the brake motor 11 is used to drive the linkage operation of the combination of the bevel gear A16 and the bevel gear B17, and synchronously drives the transmission screw 18 to rotate. During the rotation of the transmission screw 18, the positive and negative threads are used to push the two relative transmission slides 20 to slide symmetrically along the direction of the transmission guide rod 19, which, as a power source, pushes the combination of the tensioning sprocket wheel 15 and the lifting slide 22 to slide and lift along the guide rail of the lifting slide rail 23. The lifting and lowering of the tensioning sprocket wheel 15 is used to adjust the tension state of the transmission chain 5 in real time, so that the transmission chain 5 maintains a suitable tension state, and drives the multiple gallows lifting mechanisms 3 to lift and lower.

[0034] Then, under the traction of the first traction sprocket 13 and the second traction sprocket 14, when the transmission chain 5 is extended, the tensioning sprocket 15 moves down to provide sufficient chain length for the extension of the transmission chain 5, and when the transmission chain 5 is contracted, the tensioning sprocket 15 moves up to tension the excess transmission chain 5 after retraction and release, so that the transmission chain 5 always maintains a suitable tensioning state to control the integrated linkage of multiple groups of gallows lifting mechanisms 3. The independent lifting of each gallows lifting mechanism 3 has better self-stability, is less affected by other components, and is more stable. It can reduce the shaking caused by the overall linkage lifting, and the lifting and lowering support of the mechanical equipment is more stable and firm.

[0035] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. An easy-to-operate lifting device suitable for narrow spaces, characterized in that: It comprises a bottom support frame (1) and a support frame (2) installed in the middle of the bottom support frame (1); A plurality of gallows lifting mechanisms (3) are arranged on the upper end of the support frame (2); A guide rail (6) is provided on one side of the bracket of the bottom support frame (1), and the guide rail of the guide rail (6) is slidably connected to a guide slide (7), a support platform (8) is provided on the upper end of the frame of the guide slide (7), and a chain transmission mechanism for driving the gallows lifting mechanism (3) is provided on the upper end of the support platform (8); The inner frame of the support frame (2) is symmetrically mounted with an electric telescopic rod (9) connected to the support platform (8).

2. The easy-to-operate lifting device suitable for narrow spaces according to claim 1, characterized in that: The gallows lifting mechanism (3) comprises lifting gallows (31) arranged in a symmetrical arrangement, and two groups of lifting gallows (31) opposite to each other are connected via two groups of lifting wire sleeves (35) arranged in a horizontal symmetrical arrangement, a lifting screw rod (36) is screwed through the shaft sleeve of the lifting wire sleeve (35), and a transmission sprocket (37) is arranged at one end of the shaft rod of the lifting screw rod (36).

3. The easy-to-operate lifting device suitable for narrow spaces according to claim 2, characterized in that: The lifting screw rod (36) is bounded by a center line, and both sides of the center line are symmetrically provided with positive and negative thread teeth adapted to the two groups of lifting screw sleeves (35).

4. The easy-to-operate lifting device suitable for narrow spaces according to claim 2, characterized in that: The twisting shaft of the lifting gallows (31) is installed with a connecting seat (32), and a rotating shaft (33) opposite to the twisting shaft of the lifting gallows (31) is symmetrically arranged inside the support of the connecting seat (32), and the two sets of rotating shafts (33) opposite to each other in horizontal direction are coupled and driven through mutually meshing coupling gears (34).

5. The easy-to-operate lifting device suitable for narrow spaces according to claim 1, characterized in that: The chain transmission mechanism comprises a support seat (10) installed on the upper end of the support platform (8), a brake motor (11) is installed in the middle of the support seat of the support seat (10), and a transmission shell (4) is installed on one side of the support seat of the support seat (10), a transmission chain (5) for driving the gallows lifting mechanism (3) extends from the middle of the shell of the transmission shell (4), a brake sprocket (12) for driving the transmission chain (5) is arranged at the output end of the brake motor (11), lifting rails (23) are symmetrically arranged on both sides of the shell of the transmission shell (4), the guide rails of each group of the lifting rails (23) are slidably connected to the lifting slide (22), and a tensioning sprocket (15) for tensioning the transmission chain (5) is arranged in the middle of the platform of the lifting slide (22), and a lifting linkage component for pushing the tensioning sprocket (15) is arranged inside the shell of the transmission shell (4) along the output shaft direction of the brake motor (11).

6. The easy-to-operate lifting device suitable for narrow spaces according to claim 5, characterized in that: The lifting linkage assembly comprises a transmission screw (18) installed inside the transmission housing (4) along the output shaft direction of the brake motor (11), a transmission guide rod (19) is installed directly below the transmission screw (18), and a transmission slide (20) guided by the transmission guide rod (19) is symmetrically sleeved on the outer side of the shaft of the transmission screw (18), and an arm pull rod (21) connected to the tensioning sprocket wheel (15) is provided at the upper end of the frame of each group of the transmission slides (20).

7. The easy-to-operate lifting device suitable for narrow spaces according to claim 6, characterized in that: The output end of the brake motor (11) is provided with a bevel gear A (16), and the middle part of the shaft of the transmission screw (18) is provided with a bevel gear B (17) meshing with the bevel gear A (16).

8. The easy-to-operate lifting device suitable for narrow spaces according to claim 6, characterized in that: The transmission screw rod (18) is bounded by a center line, and both sides of the center line are symmetrically provided with positive and negative threads adapted to the two groups of transmission slides (20).

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