Electric single-beam telescopic crane
By introducing structures such as telescopic beams and limit buffers into electric single-girder telescopic cranes, the problem of main beam length limitation has been solved, enabling electric hoists to perform lifting operations outside the main beam, expanding the operating range and improving equipment stability.
Patent Information
- Application Number
- CN202520749833.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-04-18
AI Technical Summary
The lifting range of existing electric single-girder telescopic cranes is limited by the length of the main beam and cannot be effectively extended to the outside of the main beam.
The structure consists of a support frame, main beam, telescopic beam, and electric hoist. The telescopic beam is extended beyond the main beam by an electric monorail trolley. Combined with limit buffers, anti-tilting components, and support wheels, the electric hoist can move outside the main beam.
This expands the lifting range of the crane, prevents the electric monorail trolley and electric hoist from slipping off the main beam, reduces structural damage, and improves the stability and reliability of the operation.
Smart Images
Figure CN223936098U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of lifting equipment, and in particular to an electric single-girder telescopic crane. Background Technology
[0002] Electric single-girder telescopic cranes are commonly used lifting equipment in freight warehouses and workshops for lifting and moving heavy objects.
[0003] The related technology involves an electric single-girder telescopic crane, which includes a main girder and an electric hoist. The main girder is supported at both ends by brackets on the top of the building, and the electric hoist is slidably connected to the main girder. When transporting goods using the electric single-girder telescopic crane, the electric hoist lifts the goods and then moves them along the main girder to transfer them to other areas.
[0004] Regarding the aforementioned technologies, the electric hoist of this type of electric single-girder telescopic crane can only move within the range of the main beam. That is, the lifting operation range is limited by the length of the main beam, and the overall operation range is limited. Therefore, there is room for improvement. Utility Model Content
[0005] To further expand the operating range of electric single-girder telescopic cranes, this application provides an electric single-girder telescopic crane.
[0006] This application provides an electric single-girder telescopic crane, which adopts the following technical solution:
[0007] An electric single-girder telescopic crane includes a support frame, a main beam, a telescopic beam, and an electric hoist;
[0008] The support structure includes two opposing support beams; both ends of the support beams are supported on the top of the building by columns.
[0009] The main beam is supported at both ends on the two supporting beams.
[0010] The telescopic beam is located below the main beam and is arranged parallel to the main beam. The two ends of the telescopic beam are the driving end and the cantilever end, respectively. The driving end of the telescopic beam is slidably connected to the bottom of the telescopic beam through several electric monorail trolleys.
[0011] The electric hoist is slidably connected to the telescopic beam.
[0012] By adopting the above technical solution, when it is necessary to lift materials outside the length range of the main beam, the electric monorail trolley on the telescopic beam can drive the telescopic beam to move the electric hoist outside the range of the main beam, which facilitates lifting operations outside the length range of the main beam and helps to increase the overall lifting operation range of the crane.
[0013] Preferably, limit buffers are provided at both ends of the main beam, and the electric monorail trolley is located between the limit buffers at both ends of the main beam.
[0014] By adopting the above technical solution, limit buffers are set at both ends of the main beam to limit the electric monorail trolley, so as to prevent the electric monorail trolley from sliding out of the main beam during subsequent use.
[0015] Preferably, the limiting buffer includes a fixed block, on which a buffer rubber block is installed, and the buffer rubber blocks of the limiting buffer at both ends of the main beam are arranged opposite to each other.
[0016] By adopting the above technical solution, the buffer rubber block can buffer when the electric monorail trolley contacts the limit buffer, reducing the impact force of the electric monorail trolley on the limit buffer, making the limit buffer and the electric monorail trolley less prone to damage.
[0017] Preferably, both ends of the telescopic beam are provided with limiting parts, which are used to restrict the electric hoist from sliding out of the telescopic beam.
[0018] By adopting the above technical solution, the electric hoist is limited by the limiting parts at both ends of the telescopic beam, which helps to prevent the electric hoist from sliding out of the telescopic beam when it moves along the telescopic beam.
[0019] Preferably, the telescopic beam has a connecting seat protruding from it corresponding to the electric monorail trolley. The electric monorail trolley is connected to the top of the connecting seat. Support parts are connected to both sides of the connecting seat. Support wheels are rotatably connected to the top of each support part. The support wheels abut against the bottom of the telescopic beam.
[0020] By adopting the above technical solution, the support wheel at the top of the support part abuts against the bottom of the telescopic beam, which helps the electric monorail trolley to slide more stably on the main beam, and thus helps the electric monorail trolley to drive the telescopic beam to move along the main beam more smoothly.
[0021] Preferably, each of the support beams is supported by a slide rail on its top; each of the main beams is equipped with a track trolley at both ends, and the track trolleys at both ends of the main beam are slidably connected to the slide rails of the two support beams, and the track trolleys are used to drive the main beam to move along the slide rails.
[0022] By adopting the above technical solution, the main beam can slide along the slide rails set parallel to the top of the support beam by the rail trolleys at both ends, which is conducive to further increasing the overall working range of the crane.
[0023] Preferably, the support beam is an I-beam; an anti-tilting component is provided at one end of the main beam near the drive end of the telescopic beam. The anti-tilting component includes a first connecting plate and a second connecting plate connected to the telescopic beam. The first connecting plate and the second connecting plate are respectively located on opposite sides of the support beam. Both the first connecting plate and the second connecting plate are rotatably connected to limit wheels, and the limit wheels abut against the bottom of the upper flange of the support beam.
[0024] By adopting the above technical solution, the anti-tilting component is used to assist in limiting the support beam, thus preventing the end of the main beam away from the telescopic beam from tilting due to force when the telescopic beam drives the electric hoist to extend outside the main beam, which could cause the main beam end rail trolley to derail.
[0025] Preferably, the column is a concrete structure, and the column is provided with embedded parts corresponding to the support beam. The support beam is connected and fixed to the embedded parts through connectors.
[0026] By adopting the above technical solution, and by setting embedded parts on the column and fixing them to the support beam through connectors, the reliability of the connection between the support beam and the column is enhanced.
[0027] In summary, this application includes at least one of the following beneficial technical effects:
[0028] 1. When materials exceeding the length of the main beam need to be hoisted, the telescopic beam can extend outwards from the main beam under the drive of the electric monorail trolley, thereby moving the electric hoist outside the main beam range. This allows the electric hoist to operate not only within the main beam range but also outside the main beam, effectively expanding the crane's operating range.
[0029] 2. Limiting buffers installed at both ends of the main beam can restrict the movement range of the electric monorail trolley and prevent the subsequent electric monorail trolley from detaching from the main beam during movement.
[0030] 3. By installing anti-tilting components at the ends of the main beam, the support beam is assisted in limiting the movement of the anti-tilting components. When the telescopic beam drives the electric hoist to extend outside the main beam, it can effectively prevent the end of the main beam away from the telescopic beam from tilting due to force. Attached Figure Description
[0031] Figure 1 This is a schematic diagram illustrating the structure of an electric single-girder telescopic crane according to an embodiment of this application.
[0032] Figure 2 This is a schematic diagram illustrating the extension of the telescopic boom of an electric single-girder telescopic crane beyond the main beam, as shown in the embodiments of this application.
[0033] Figure 3 This is a schematic diagram illustrating the connection between the track trolley and the slide rail in an embodiment of this application.
[0034] Figure 4 This is a schematic diagram illustrating the connection relationship between the main beam, the telescopic beam, and the electric hoist in an embodiment of this application.
[0035] Figure 5 yes Figure 2 Enlarged schematic diagram of part A in the middle.
[0036] Figure 6 yes Figure 2 Enlarged schematic diagram of section B.
[0037] Explanation of reference numerals in the attached figures:
[0038] 1. Bracket; 11. Support beam; 12. Column; 13. Slide rail; 2. Main beam; 21. Fixing block; 22. Buffer rubber block; 23. Track trolley; 24. Track wheel; 3. Telescopic beam; 30. Limiting part; 31. Connecting seat; 32. Support part; 33. Support wheel; 4. Electric monorail trolley; 5. Electric hoist; 6. Anti-tilting component; 61. First connecting plate; 62. Second connecting plate; 63. Limiting wheel. Detailed Implementation
[0039] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.
[0040] This application discloses an electric single-girder telescopic crane, referring to... Figure 1 and Figure 2 The system includes a support frame 1, a main beam 2, a telescopic beam 3, and an electric hoist 5. The support frame 1 comprises two opposing support beams 11, each supported at both ends by columns 12 on the top of the building. The main beam 2 is supported at both ends by the two support beams 11. The telescopic beam 3 is located below the main beam 2 and is parallel to it. The telescopic beam 3 has a drive end and a cantilever end at its two ends. The drive end of the telescopic beam 3 is slidably connected to the bottom of the telescopic beam 3 via two electric monorail trolleys 4. The electric hoist 5 is slidably connected to the bottom of the telescopic beam 3. The telescopic beam 3 can use the electric monorail trolleys 4 to drive the electric hoist 5 to slide beyond the length of the main beam 2 for hoisting operations, thus expanding the overall working range of the crane.
[0041] Reference Figure 2 and Figure 3 All columns 12 are made of concrete, and the support beams 11 are I-beams. The columns 12 have embedded parts corresponding to the support beams 11. The support beams 11 are fixed to the embedded parts by welding with connectors to achieve a stable connection between the support beams 11 and the columns 12.
[0042] Each support beam 11 is fixedly mounted with a slide rail 13, which is parallel to the corresponding support beam 11. Both ends of the main beam 2 are vertically fixed with rail trolleys 23, forming an I-shape. The rail wheels 24 on the rail trolleys 23 at both ends of the main beam 2 are respectively engaged with the slide rails 13 of the two support beams 11, allowing the two ends of the main beam 2 to slide on the slide rails 13 of the two support beams 11 via the rail trolleys 23. The rail trolleys 23 drive the support beams 11 to slide along the slide rails 13, facilitating the movement of the main beam 2 according to hoisting operation requirements and further increasing the overall operating range of the crane.
[0043] An anti-tilting component 6 is provided at one end of the main beam 2 near the driving end of the telescopic beam 3. The anti-tilting component 6 includes a first connecting plate 61 and a second connecting plate 62, both of which are fixedly connected to the end of the main beam 2. The first connecting plate 61 and the second connecting plate 62 are located on opposite sides of the support beam 11. Both the first connecting plate 61 and the second connecting plate 62 are rotatably connected to limit wheels 63. The rotation axis of the limit wheels 63 is perpendicular to the length direction of the support beam 11. The limit wheels 63 of both the first connecting plate 61 and the second connecting plate 62 are pressed against the bottom of the upper flange of the support beam 11. This achieves the limitation of the end of the main beam 2, so as to prevent the end of the main beam 2 away from the telescopic beam 3 from tilting when the telescopic beam 3 drives the electric hoist 5 to move out of the main beam 2. At the same time, the setting of the limit wheels 63 effectively reduces the friction between the anti-tilting component 6 and the support beam 11, and avoids the anti-tilting component 6 interfering with the subsequent movement of the main beam 2.
[0044] Reference Figure 5 and Figure 6 Both the main beam 2 and the telescopic beam 3 are double-jointed I-beams. The pulleys on opposite sides of the electric monorail trolley 4 are respectively embedded in the grooves on opposite sides of the main beam 2 and abut against the lower flange of the main beam 2, achieving a stable connection between the electric monorail trolley 4 and the telescopic beam 3. A connecting seat 31 is fixed to the top of the telescopic beam 3 corresponding to the electric monorail trolley 4, and the connecting seat 31 is connected to the bottom of the electric monorail trolley 4. On opposite sides of the connecting seat 31, there are vertically upward-facing support parts 32. The top of each support part 32 is rotatably connected to a support wheel 33. The rotation axis of the support wheel 33 is parallel to the length direction of the telescopic beam 3, and the outer circumference of the support wheel 33 abuts against the bottom of the lower flange of the main beam 2. The support wheel 33 assists in limiting the electric monorail trolley 4, preventing it from detaching from the main beam 2, and facilitating a more stable sliding connection between the electric monorail trolley 4 and the main beam 2.
[0045] Both ends of the main beam 2 are equipped with protruding limit buffers, and the two electric monorail trolleys 4 are located between the limit buffers at both ends of the main beam 2. Each limit buffer includes a fixing block 21, which is welded to the main beam 2. A buffer rubber block 22 is adhered to each fixing block 21, and the buffer rubber blocks 22 on the fixing blocks 21 at both ends of the main beam 2 are positioned opposite each other. Through this configuration, the limit buffers at both ends of the main beam 2 can limit the electric monorail trolley 4, preventing it from sliding out of the ends of the main beam 2. Simultaneously, the buffer rubber blocks 22 can cushion the impact of the electric monorail trolley 4 on the limit buffer when it comes into contact with it, reducing the possibility of damage to the limit buffer.
[0046] Both ends of the telescopic beam 3 are provided with limiting parts 30. The limiting parts 30 are used to restrict the electric hoist 5 from sliding out of the end of the telescopic beam 3, which helps the electric hoist 5 to be installed more stably on the telescopic beam 3.
[0047] The implementation principle of this application embodiment is as follows: when hoisting operations need to be performed outside the length range of the main beam 2, the telescopic beam 3 can be driven by two electric monorail trolleys 4 at its own drive end to extend the electric hoist 5 to the end of the main beam. This effectively improves the overall working range of the crane.
[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. An electric single-girder telescopic crane, characterized in that: It includes a support frame (1), a main beam (2), a telescopic beam (3), and an electric hoist (5); The support frame (1) includes two opposing support beams (11); both ends of the support beams (11) are supported on the top of the building by columns (12); The main beam (2) is supported on two supporting beams (11) at both ends; The telescopic beam (3) is located below the main beam (2) and is arranged parallel to the main beam (2). The two ends of the telescopic beam (3) are the driving end and the cantilever end, respectively. The driving end of the telescopic beam (3) is slidably connected to the lower part of the telescopic beam (3) by several electric monorail trolleys (4). The electric hoist (5) is slidably connected to the telescopic beam (3).
2. The electric single-girder telescopic crane according to claim 1, characterized in that: Limiting buffers are provided at both ends of the main beam (2), and the electric monorail trolley (4) is located between the limiting buffers at both ends of the main beam (2).
3. The electric single-girder telescopic crane according to claim 2, characterized in that: The limiting buffer includes a fixed block (21), on which a buffer rubber block (22) is installed. The buffer rubber blocks (22) of the limiting buffer are arranged opposite to each other at both ends of the main beam (2).
4. The electric single-girder telescopic crane according to claim 1, characterized in that: Both ends of the telescopic beam (3) are provided with limiting parts (30), which are used to restrict the electric hoist (5) from sliding out of the telescopic beam (3).
5. An electric single-girder telescopic crane according to claim 1, characterized in that: The telescopic beam (3) is provided with a connecting seat (31) corresponding to the electric monorail trolley (4). The electric monorail trolley (4) is connected to the top of the connecting seat (31). The connecting seat (31) is connected to a support part (32) on both sides. The top of the support part (32) is rotatably connected to a support wheel (33). The support wheel (33) abuts against the bottom of the telescopic beam (3).
6. An electric single-girder telescopic crane according to claim 1, characterized in that: The top of each support beam (11) is supported by a slide rail (13) in parallel; each end of the main beam (2) is equipped with a track trolley (23), and the track trolleys (23) at both ends of the main beam (2) are slidably connected to the slide rails (13) of the two support beams (11), and the track trolleys (23) are used to drive the main beam (2) to move along the slide rails (13).
7. An electric single-girder telescopic crane according to claim 6, characterized in that: The support beam (11) is an I-beam; the main beam (2) is provided with an anti-tilting component (6) at one end near the driving end of the telescopic beam (3). The anti-tilting component (6) includes a first connecting plate (61) and a second connecting plate (62) connected to the telescopic beam (3). The first connecting plate (61) and the second connecting plate (62) are respectively located on opposite sides of the support beam (11). The first connecting plate (61) and the second connecting plate (62) are rotatably connected to a limiting wheel (63). The limiting wheel (63) abuts against the bottom of the upper flange of the support beam (11).
8. An electric single-girder telescopic crane according to claim 1, characterized in that: The column (12) is a concrete structure. The column (12) is provided with embedded parts corresponding to the support beam (11). The support beam (11) is connected and fixed to the embedded parts through connectors.