Trolley side roller structure for tower crane
By designing the side roller structure on the trolley of the tower crane, the contact problem between the trolley and the boom is solved, the stable movement of the trolley on the boom track is achieved, and the load bearing capacity and positioning stability are improved.
Patent Information
- Application Number
- CN202420934070.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-04-30
AI Technical Summary
When the trolley of the tower crane moves forward and backward on the boom, it is prone to contact and friction with the boom, resulting in unstable operation.
A side roller structure of a trolley for tower crane is designed, including a load trolley, a horizontal roller and a pin shaft. The horizontal roller is in contact with the boom, providing guide and lateral load support to ensure stable movement of the trolley.
Through the side roller structure, the contact problem between the car and the boom is solved, the movement stability of the car on the boom track is improved, and the load bearing capacity and positioning stability are enhanced.
Smart Images
Figure CN222684087U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to a tower crane, and in particular to a trolley side roller structure for a tower crane. Background Art
[0002] When the trolley of a tower crane moves back and forth on the boom, the side of the trolley will occasionally come into contact and rub against the boom. Utility Model Content
[0003] The utility model aims to provide a side roller structure of a trolley for a tower crane, which solves the contact between the trolley and the boom, and the trolley can operate normally. The side roller structure of the technical solution has the characteristics of large bearing capacity, stable positioning, and easy installation.
[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions.
[0005] An embodiment of the present application discloses a trolley side roller structure for a tower crane, which is formed on both sides of a lifting boom and includes a load-bearing trolley, wherein the load-bearing trolley includes a first horizontal plate body and a second horizontal plate body which are arranged opposite to each other up and down, a clamping space is formed between the first horizontal plate body and the second horizontal plate body, a horizontal roller is arranged in the clamping space, and also includes a pin shaft, which vertically passes through the first horizontal plate body, the horizontal roller, and the second horizontal plate body in sequence, a bearing is arranged between the pin shaft and the horizontal roller, and a spacer sleeve is also arranged on the outside of the pin shaft between the second horizontal plate body and the horizontal roller, and the spacer sleeve is supported on the top surface of the second horizontal plate body.
[0006] Preferably, in the above-mentioned trolley side roller structure for tower crane, a connecting block is welded to the bottom of the second horizontal plate body, a cylindrical cavity is formed inside the connecting block, and the pin shaft is snugly inserted into the cylindrical cavity.
[0007] Preferably, in the above-mentioned trolley side roller structure for tower crane, the bottom of the pin shaft is connected to the slotted nut through a cotter pin, a flat washer is clamped between the top surface of the slotted nut and the bottom surface of the connecting block, and the slotted nut is connected to the bottom of the pin shaft.
[0008] Preferably, in the above-mentioned trolley side roller structure for tower crane, the pin shaft protrudes outwards near the top to form an annular step portion, and the annular step portion is supported on the top surface of the bearing.
[0009] Preferably, in the above-mentioned trolley side roller structure for tower crane, the bearing comprises two upper and lower bearings, the top surface of the upper bearing is provided with an upper cover body, and the bottom surface of the lower bearing is provided with a lower cover body.
[0010] Preferably, in the above-mentioned trolley side roller structure for tower crane, the horizontal roller contacts / does not contact the lifting boom.
[0011] Compared with the prior art, the advantage of this technical solution is that the trolley can move stably on the boom track, the side rollers play a guiding role and bear the lateral load at the same time, thereby improving the movement stability of the trolley. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0013] Figure 1 The figure shows a schematic diagram of the side roller structure of the trolley for the tower crane in the embodiment of the utility model;
[0014] Figure 2 Shown is a schematic diagram of a load-carrying trolley in an embodiment of the utility model;
[0015] Figure 3 The figure shows a disassembled view of the pin shaft and the horizontal roller etc. in the embodiment of the utility model;
[0016] Figure 4 Shown is an assembly diagram of the pin shaft and horizontal roller etc. in an embodiment of the utility model. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the utility model to describe the technical solutions in the embodiments of the utility model in detail. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0018] Combination Figure 1-Figure 4 As shown, the trolley side roller structure 100 for the tower crane is formed on both sides of the lifting boom 101, and includes a load-bearing trolley 102. The load-bearing trolley 102 includes a first horizontal plate body 103 and a second horizontal plate body 104 which are arranged opposite to each other up and down, and a clamping space 105 is formed between the first horizontal plate body 103 and the second horizontal plate body 104. A horizontal roller 106 is arranged in the clamping space 105, and also includes a pin shaft 107. The pin shaft 107 vertically passes through the first horizontal plate body 103, the horizontal roller 106, and the second horizontal plate body 104 in sequence, and a bearing 108 is arranged between the pin shaft 107 and the horizontal roller 106. The outside of the pin shaft 107 is also provided with a spacer sleeve 109 between the second horizontal plate body 104 and the horizontal roller 106, and the spacer sleeve 109 is supported on the top surface of the second horizontal plate body 104.
[0019] In this embodiment, by installing the horizontal roller, if the trolley tilts sideways, the horizontal roller will be supported on the lifting boom, and the spacer sleeve is supported on the bearing, thereby ensuring stability.
[0020] Furthermore, a connection block 110 is welded to the bottom of the second horizontal plate 104, a cylindrical cavity 111 is formed inside the connection block 110, and the pin 107 is inserted into the cylindrical cavity 111. The bottom of the pin 107 is connected to the slotted nut 113 through a split pin 112, a flat washer 114 is sandwiched between the top surface of the slotted nut 113 and the bottom surface of the connection block 110, and the slotted nut 113 is connected to the bottom of the pin 107. An annular step portion 115 is formed near the top of the pin 107 and protrudes outward, and the annular step portion 115 is supported on the top surface of the bearing 108.
[0021] In this embodiment, it is used to facilitate positioning and achieve stable support for arrangement.
[0022] Furthermore, the bearing 108 includes two upper and lower bearings. An upper cover 116 is disposed on the top surface of the upper bearing 108 , and a lower cover 117 is disposed on the bottom surface of the lower bearing 108 .
[0023] In this embodiment, the structure is more stable.
[0024] Further, the horizontal roller 106 contacts / does not contact the lifting boom 101 .
[0025] In this embodiment, the horizontal rollers on both sides play a guiding role and bear the lateral load at the same time.
[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0027] The above is only a specific implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.
Claims
1. A trolley side roller structure for a tower crane, formed on both sides of a lifting boom, characterized in that: The load-carrying trolley comprises a first horizontal plate body and a second horizontal plate body which are arranged opposite to each other in an upper and lower direction, a clamping space is formed between the first horizontal plate body and the second horizontal plate body, a horizontal roller is arranged in the clamping space, and a pin shaft is also included. The pin shaft vertically passes through the first horizontal plate body, the horizontal roller and the second horizontal plate body in sequence, a bearing is arranged between the pin shaft and the horizontal roller, and a spacer sleeve is also arranged on the outside of the pin shaft between the second horizontal plate body and the horizontal roller, and the spacer sleeve is supported on the top surface of the second horizontal plate body.
2. The side roller structure of the trolley for tower crane according to claim 1 is characterized in that: A connecting block is welded at the bottom of the second horizontal plate body, a cylindrical cavity is formed inside the connecting block, and the pin shaft is snugly inserted into the cylindrical cavity.
3. The side roller structure of the tower crane trolley according to claim 2 is characterized in that: The bottom of the pin shaft is connected to the slotted nut through a cotter pin, a flat washer is clamped between the top surface of the slotted nut and the bottom surface of the connecting block, and the slotted nut is connected to the bottom of the pin shaft.
4. The side roller structure of the trolley for tower crane according to claim 1 is characterized in that: The pin shaft protrudes outward near the top to form an annular step portion, and the annular step portion is supported on the top surface of the bearing.
5. The side roller structure of the trolley for tower crane according to claim 1, characterized in that: The bearing comprises two parts, an upper bearing and an lower bearing. An upper cover is arranged on the top surface of the upper bearing, and a lower cover is arranged on the bottom surface of the lower bearing.
6. The side roller structure of the tower crane trolley according to claim 1, characterized in that: The horizontal roller contacts / does not contact the lifting boom.