Sealed structure for walking of trolley

Abstract

The utility model relates to the technical field of shot blasting machines, in particular to a trolley walking sealing type structure which comprises a trolley rack, a shot blasting machine rotary table is movably installed on the top of the trolley rack, and a rotary table driving assembly matched with the shot blasting machine rotary table is fixedly installed in the trolley rack. Walking wheels are movably mounted on the front portions and the rear portions of the left side and the right side of the trolley rack correspondingly, the middles of the walking wheels are fixedly sleeved with mounting rotating shafts, one ends of the mounting rotating shafts are fixedly sleeved with driven chain wheels, and a walking driving assembly is fixedly mounted in the trolley rack. According to the trolley walking sealing type structure, the position of the chain wheel transmission structure is changed, the chain wheel transmission structure is installed on the outer side of the trolley rack, the chain wheel transmission structure is prevented from being located under the shot blasting chamber, and therefore the situation that dust and steel shots generated in the shot blasting operation directly affect the chain wheel transmission structure is eradicated; meanwhile, a sealing cover is arranged at the position, close to the walking wheels, of the trolley rack to seal the chain wheel transmission structure.

Description

Technical Field

[0001] The utility model relates to the technical field of shot blasting machines, in particular to a trolley travel sealed structure. Background Art

[0002] The trolley shot blasting machine is also called the trolley shot blasting cleaning machine. It is used to clean the surface treatment process of large cast iron parts, forgings, welded parts and other metal workpieces. It can remove impurities such as sticky sand, rust, scale, dirt, etc. on the surface, and restore the original metallic luster of the workpiece. The shot blasting machine can not only perform surface treatment functions, but also eliminate the internal stress of the workpiece, improve fatigue resistance, and increase service life. After treatment, the surface of the metal workpiece has a certain degree of roughness, which is more conducive to the adhesion of the paint film of subsequent spraying and painting. The trolley shot blasting machine consists of a shot blasting machine chamber, a trolley, a screw conveyor, a separator, a steel shot ejector, an electric control box, a dust collector, etc. The workpiece is placed on the trolley, which can be moved and rotated, and then the steel shot ejector is turned on to strike, so as to achieve the process of rust removal and strengthening. The steel shot is recycled through a screw conveyor, a separator, a dust removal system and other devices.

[0003] In the prior art, the travel of the trolley mainly relies on the reducer plus sprocket structure to drive the travel wheels of the trolley to rotate, so as to adjust the overall position of the trolley shot blasting machine. The common reducer plus sprocket structure in the trolley is usually installed inside the trolley frame, such as Figure 7 As shown, the sprocket structure is located directly below the shot blasting chamber, and the sprocket drive lacks a corresponding sealing structure. The internal environment of the shot blasting chamber is complex. The dust and steel shots generated during operation are easily splashed to the outside, causing erosion to the sprocket drive structure, affecting the normal operation of the sprocket drive structure, and causing the trolley walking structure to fail. For this reason, we propose a trolley walking sealing structure to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a trolley travel sealing structure, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a trolley travel sealed structure, including a trolley frame, a shot blasting machine turntable is movably installed on the top of the trolley frame, a turntable driving assembly that cooperates with the shot blasting machine turntable is fixedly installed inside the trolley frame, and walking wheels are movably installed on the front and rear parts of the left and right sides of the trolley frame, a mounting shaft is fixedly installed in the middle of the walking wheel, and a driven sprocket is fixedly installed on one end of the mounting shaft, a travel driving assembly is fixedly installed inside the trolley frame, and a driving sprocket is fixedly installed on the output shaft of the travel driving assembly, a transmission chain is meshed with the outside of the driving sprocket and the driven sprocket, and a sealing cover is fixedly installed on the side of the trolley frame close to the walking wheel by bolts.

[0006] Preferably, there are two groups of travel drive components, and the two groups of travel drive components are distributed in a mirror-image manner inside the trolley frame, and the two groups of travel drive components are located together at the front or rear of the trolley frame.

[0007] Preferably, the output shaft of the travel drive assembly extends to the outside of the trolley frame, and the driving sprocket on the output shaft of the travel drive assembly is located on the outside of the trolley frame.

[0008] Preferably, the driving sprocket and the driven sprocket are in the same plane, and the diameter and the number of teeth of the driven sprocket are 2-3 times the diameter and the number of teeth of the driving gear.

[0009] Preferably, mounting bearings located on both sides of the traveling wheel are nested outside the mounting shaft, and the mounting shaft is movably mounted on the trolley frame via the mounting bearings.

[0010] Preferably, the sealing cover is wrapped around the outside of the driving sprocket, the driven sprocket and the transmission chain, and the shape of the sealing cover is adapted to the driving sprocket, the driven sprocket and the transmission chain.

[0011] Preferably, the sealing cover is provided with a mounting hole that cooperates with the traveling wheel, and the sealing cover is sleeved on the traveling wheel through the mounting hole. A pressing ring is fixedly installed on the mounting hole of the sealing cover by bolts, and a rubber sealing ring that cooperates with the traveling wheel is pressed between the pressing ring and the sealing cover.

[0012] The utility model provides a trolley travel sealing structure, which has the following beneficial effects:

[0013] 1. The trolley travel sealed structure changes the position of the sprocket drive structure and installs the sprocket drive structure to the outside of the trolley frame to avoid the sprocket drive structure being located directly below the shot blasting chamber, thereby preventing the dust and steel shots generated during the shot blasting operation from directly affecting the sprocket drive structure. At the same time, a sealing cover is arranged on the trolley frame near the travel wheel to seal the sprocket drive structure, further blocking impurities such as dust and steel shots, ensuring the working environment of the sprocket drive structure, and ensuring the normal operation of the trolley travel mechanism.

[0014] 2. The trolley travel sealed structure moves the sprocket drive structure to the outside of the trolley frame, so that the sprocket drive structure can be directly inspected and repaired outside the trolley frame, reducing the difficulty of later maintenance. In addition, the sealing cover is sealed between the pressure ring and the travel wheel, ensuring that the travel wheel can rotate stably while improving the sealing of the connection between the sealing cover and the travel wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model after overall assembly;

[0016] Figure 2 It is a schematic diagram of the structure of the utility model as a whole from a top view;

[0017] Figure 3 It is a schematic structural diagram of the utility model as a whole viewed from the front;

[0018] Figure 4 For this utility model Figure 2 AA cross-sectional diagram of ;

[0019] Figure 5 This is a schematic diagram of the structure of the sealing cover of the utility model;

[0020] Figure 6 This is a schematic structural diagram of the sealing cover of the utility model from the side;

[0021] Figure 7 It is a schematic diagram of the travel wheel driving structure in the prior art.

[0022] In the figure: 1. trolley frame; 2. shot blasting machine turntable; 3. turntable drive assembly; 4. travel drive assembly; 5. installation shaft; 6. installation bearing; 7. travel wheel; 8. driven sprocket; 9. transmission chain; 10. sealing cover; 11. rubber sealing ring; 12. pressure ring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely 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 of the embodiments.

[0024] See also Figure 1 , 23. The utility model provides a technical solution: a trolley travel sealed structure, including a trolley frame 1, a shot blasting machine turntable 2 is movably installed on the top of the trolley frame 1, and a turntable driving assembly 3 that cooperates with the shot blasting machine turntable 2 is fixedly installed inside the trolley frame 1. The shot blasting machine turntable 2 and the turntable driving assembly 3 are currently common existing technologies. The turntable driving assembly 3 can provide power for the rotation of the shot blasting machine turntable 2. The front and rear parts of the left and right sides of the trolley frame 1 are movably installed with walking wheels 7. The trolley frame 1 is provided with a plurality of walking wheels 7. The two sets of walking wheels 7 at the same end serve as driving wheels, and the two sets of walking wheels 7 at the other end serve as driven wheels. The trolley frame 1 can be stably driven to move by a plurality of walking wheels 7. The middle part of the walking wheel 7 is fixedly sleeved with an installation shaft 5, and one end of the installation shaft 5 is fixedly sleeved with a driven sprocket 8. The position of the sprocket transmission structure is changed, and the sprocket transmission structure is installed to the outside of the trolley frame 1 to avoid the sprocket transmission structure being located in the center of the shot blasting room. Below, in order to prevent the dust and steel shots generated during the shot blasting operation from directly affecting the sprocket transmission structure, a travel drive assembly 4 is fixedly installed inside the trolley frame 1, and a driving sprocket is fixedly mounted on the output shaft of the travel drive assembly 4. The sprocket transmission structure is moved to the outside of the trolley frame 1, and the sprocket transmission structure can be directly inspected and repaired outside the trolley frame 1, reducing the difficulty of later maintenance. The external meshing sleeve of the driving sprocket and the driven sprocket 8 is equipped with a transmission chain 9. The driving sprocket, the driven sprocket 8, and the transmission chain 9 together constitute a sprocket transmission structure, which is transmitted through the sprocket transmission structure to ensure that the travel drive assembly 4 can stably drive the travel wheel 7 to rotate. A sealing cover 10 is fixedly installed on the side of the trolley frame 1 close to the travel wheel 7 by bolts, and a sealing cover 10 is arranged on the trolley frame 1 close to the travel wheel 7 to seal the sprocket transmission structure, block impurities such as dust and steel shots, and ensure the working environment of the sprocket transmission structure.

[0025] See also Figure 2 , 4 There are two groups of travel drive components 4, which are composed of a drive motor and a reducer, and can provide power for the rotation of the travel wheels 7. The two groups of travel drive components 4 are mirror-distributed inside the trolley frame 1. The two groups of travel drive components 4 are located together at the front or rear of the trolley frame 1. The installation position of the travel drive components 4 is restricted so that the two groups of travel drive components 4 can synchronously drive the two groups of travel wheels 7 at the same end of the trolley frame 1 to rotate, thereby driving the trolley frame 1 to move stably.

[0026] The output shaft of the travel drive assembly 4 extends to the outside of the trolley frame 1, and the active sprocket on the output shaft of the travel drive assembly 4 is located on the outside of the trolley frame 1. The position of the sprocket transmission structure is changed, and the sprocket transmission structure is installed on the outside of the trolley frame 1, thereby preventing the dust and steel shots generated during the shot blasting operation from directly affecting the sprocket transmission structure.

[0027] The driving sprocket and the driven sprocket 8 are in the same plane. The driving sprocket drives the transmission chain 9 to rotate, thereby driving the driven sprocket 8 to rotate, so that the travel drive component 4 drives the travel wheel 7 to rotate. The diameter and number of teeth of the driven sprocket 8 are 2-3 times the diameter and number of teeth of the driving gear. By changing the transmission ratio between the driving gear and the driven sprocket 8, the travel drive component 4 can provide a larger torque to the travel wheel 7.

[0028] See also Figure 4 The outside of the mounting shaft 5 is nested with mounting bearings 6 located on both sides of the traveling wheel 7. The transmission is performed through the mounting shaft 5 to ensure that the driven sprocket 8 can drive the mounting shaft 5 and then drive the traveling wheel 7 to rotate. The mounting shaft 5 is movably mounted on the trolley frame 1 through the mounting bearings 6. The mounting shaft 5 is restricted by the mounting bearings 6 to ensure the stability of the mounting shaft 5 and the traveling wheel 7 during rotation, thereby realizing the stable movement of the trolley frame 1.

[0029] See also Figure 4 , 5 6. The sealing cover 10 is wrapped around the outside of the driving sprocket, the driven sprocket 8 and the transmission chain 9. The sealing cover 10 is arranged on the trolley frame 1 near the walking wheel 7 to seal the sprocket transmission structure and block impurities such as dust and steel shots to ensure the working environment of the sprocket transmission structure. The shape of the sealing cover 10 is adapted to the driving sprocket, the driven sprocket 8 and the transmission chain 9 to ensure that the sealing cover 10 can be adapted to the sprocket transmission structure to achieve effective protection of the sprocket transmission structure.

[0030] A mounting hole matching the running wheel 7 is opened on the sealing cover 10, and the sealing cover 10 is sleeved on the running wheel 7 through the mounting hole. A pressing ring 12 is fixedly installed on the mounting hole of the sealing cover 10 by bolts, and the rubber sealing ring 11 is pressed by the pressing ring 12 to ensure the stability of the rubber sealing ring 11 during operation, and to facilitate the replacement of the rubber sealing ring 11 at a later time. A rubber sealing ring 11 matching the running wheel 7 is pressed between the pressing ring 12 and the sealing cover 10, and the sealing cover 10 is sealed with the running wheel 7 through the pressing ring 12, which ensures that the running wheel 7 can rotate stably while improving the sealing of the connection between the sealing cover 10 and the running wheel 7.

[0031] In summary, when the trolley travel sealed structure is used, when the position of the trolley frame 1 needs to be adjusted, the travel drive assembly 4 inside the trolley frame 1 drives the active sprocket on the output shaft to rotate, and through the transmission chain 9, drives the driven sprocket 8 to rotate, and then drives the installation shaft 5 and the travel wheel 7 to rotate, so that the travel wheel 7 moves on the track of the desktop shot blasting machine, and adjusts the overall position. The sprocket transmission structure is installed to the outside of the trolley frame 1 to avoid the sprocket transmission structure being located directly below the shot blasting chamber, thereby preventing the dust and steel shots generated during the shot blasting operation from directly affecting the sprocket transmission structure. At the same time, the sprocket transmission structure is protected by the sealing cover 10 to block impurities such as dust and steel shots to ensure the working environment of the sprocket transmission structure. The sealing cover 10 and the travel wheel 7 are sealed by the pressure ring 12 to ensure that the travel wheel 7 can rotate stably while improving the sealing performance of the connection between the sealing cover 10 and the travel wheel 7.

[0032] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A trolley travel sealed structure, comprising a trolley frame (1), a shot blasting machine turntable (2) being movably mounted on the top of the trolley frame (1), and a turntable drive assembly (3) cooperating with the shot blasting machine turntable (2) being fixedly mounted inside the trolley frame (1), characterized in that: Travel wheels (7) are movably mounted on the front and rear parts of both left and right sides of the trolley frame (1); a mounting shaft (5) is fixedly mounted on the middle part of the travel wheel (7); and a driven sprocket (8) is fixedly mounted on one end of the mounting shaft (5); a travel drive assembly (4) is fixedly mounted inside the trolley frame (1); and a driving sprocket is fixedly mounted on the output shaft of the travel drive assembly (4); a transmission chain (9) is meshed with the outside of the driving sprocket and the driven sprocket (8); and a sealing cover (10) is fixedly mounted on the side of the trolley frame (1) close to the travel wheel (7) by means of bolts.

2. The trolley travel sealing structure according to claim 1 is characterized in that: The number of the travel drive components (4) is two groups, and the two groups of travel drive components (4) are distributed in a mirror-image manner inside the trolley frame (1), and the two groups of travel drive components (4) are located together at the front or rear of the trolley frame (1).

3. The trolley travel sealing structure according to claim 1 is characterized in that: The output shaft of the travel drive assembly (4) extends to the outside of the trolley frame (1), and the driving sprocket on the output shaft of the travel drive assembly (4) is located on the outside of the trolley frame (1).

4. The trolley travel sealing structure according to claim 3 is characterized in that: The driving sprocket and the driven sprocket (8) are located in the same plane, and the diameter and the number of teeth of the driven sprocket (8) are 2-3 times the diameter and the number of teeth of the driving gear.

5. The trolley travel sealing structure according to claim 1 is characterized in that: The outside of the installation shaft (5) is embedded with installation bearings (6) located on both sides of the running wheel (7), and the installation shaft (5) is movably installed on the trolley frame (1) through the installation bearings (6).

6. The trolley travel sealing structure according to claim 1, characterized in that: The sealing cover (10) is wrapped around the outside of the driving sprocket, the driven sprocket (8) and the transmission chain (9), and the shape of the sealing cover (10) is adapted to the driving sprocket, the driven sprocket (8) and the transmission chain (9).

7. The trolley travel sealing structure according to claim 1, characterized in that: The sealing cover (10) is provided with a mounting hole for matching with the running wheel (7), and the sealing cover (10) is sleeved on the running wheel (7) through the mounting hole. A pressing ring (12) is fixedly mounted on the mounting hole of the sealing cover (10) by bolts, and a rubber sealing ring (11) for matching with the running wheel (7) is pressed between the pressing ring (12) and the sealing cover (10).

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