Connection structure between guide channel and excavation bottom beam
Through the independent connection of the guide wheel and the elbow, the inner space occupation is eliminated, and stability is increased through wear-resistant bottom plate and bolt fixing, the space occupation problem caused by the connection of the guide groove and the excavated bottom beam in the prior art is solved, and the mechanical screening effect is achieved to adapt to narrow spaces.
Patent Information
- Application Number
- CN202421571609.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-07-04
AI Technical Summary
The guide grooves of the existing railway screen cleaning machine are connected to the excavation bottom beam through an elbow, resulting in a large space in the corner guide wheel, resulting in a large height size and occupancy of the excavation width space, which cannot meet the mechanical screening construction requirements for narrow spaces in bridges and tunnels.
The design of independent connection between the guide wheel and the elbow is adopted to eliminate the space occupied on the inner side, and the first wear-resistant bottom plate presses the top of the fourth pin to prevent the fourth pin from jumping out, and is fixed by bolts through the connecting plate and the clamping plate to increase the stability of the second pin.
It effectively reduces the height occupation at the bends, increases the stability of the guide wheels, and adapts to the mechanical screening requirements of narrow spaces in bridges and tunnels.
Smart Images
Figure CN222744705U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of railway maintenance machinery, in particular to a connecting structure of a guide groove and an excavation bottom beam. Background Art
[0002] For gravel railway ballast, after long-term train running impact, gravel damage and soil pollution, the ballast will gradually lose its elasticity, affecting driving safety and riding comfort. When the ballast impurity of the ballast exceeds 30%, maintenance operations such as cleaning and screening should be carried out to ensure the line quality and restore the geometric parameters, elasticity and drainage of the ballast.
[0003] The railway full-section cleaning machine is a railway maintenance machine that digs out the ballast by passing under the sleepers, transports it to the vibrating screen for screening, and then backfills it into the roadbed. It has the characteristics of high operating efficiency and high cleaning quality. The guide trough and the digging bottom beam are the conveying channels for the digging chain to run and dig out the ballast. When the digging bottom beam is in operation, it is located in the roadbed below the sleepers. The guide trough is located at both ends of the sleepers, and it is at a certain angle to the roadbed and is approximately vertical to the digging bottom beam. The roadbed ballast is transported to the guide trough along with the digging chain at the elbow of the digging bottom beam, and then enters the vibrating screen for screening.
[0004] At present, mechanized cleaning and screening operations have been widely used in railway mainline cleaning and screening. However, due to the small space and limited ballast thickness of bridges and tunnels, the guide trough of the current cleaning machine is connected to the bottom beam through an elbow. One end of the elbow is connected to the bottom beam, and the other end is embedded in the guide trough. The guide trough adopts the method of clamping the elbow up and down. Here, the guide wheel is installed in the elbow, and the guide trough, elbow and guide wheel are connected into one by the guide wheel shaft. Due to the multi-layer structure, the corner guide wheel occupies a large space, resulting in a large height dimension and occupying the excavation width space, which cannot meet the requirements of mechanical cleaning and screening construction in the narrow space of bridges and tunnels. Utility Model Content
[0005] The embodiment of the utility model provides a guide groove and excavation bottom beam connection structure, which has the technical effect of being able to clean the railway track bed in the narrow space of bridges and tunnels.
[0006] The present invention provides a guide trough and excavation bottom beam connection structure, which adopts the following technical solutions:
[0007] A guide groove and excavation bottom beam connection structure, comprising a bottom beam, an elbow and a guide groove, the bottom beam and the guide groove are connected through the elbow, two first ear plates with pin holes arranged up and down are fixed on the side of the guide groove close to the elbow, two groups of second ear plates with pin holes are fixed on the side of the elbow close to the guide groove, the upper first ear plate and one group of second ear plates are connected as a whole through a first pin shaft, the lower first ear plate and the other group of second ear plates are connected as a whole through a fourth pin shaft, two vertically arranged card plates with holes are fixed on the inner wall of the turning point of the elbow, the guide wheel is located between the two card plates, the guide wheel and the card plate are connected as a whole through the second pin shaft, a fourth ear plate with pin holes is fixed on the side of the bottom beam close to the elbow, two third ear plates with holes are fixed on the side of the elbow close to the bottom beam, the fourth ear plate is inserted between the two third ear plates, and the fourth ear plate and the third ear plate are connected as a whole through the third pin shaft.
[0008] Furthermore, a first wear-resistant bottom plate and a first inner wear-resistant plate are fixed to the elbow by bolts, and the first wear-resistant bottom plate presses the top of the fourth pin shaft.
[0009] Furthermore, a second wear-resistant bottom plate and a second inner wear-resistant plate are fixed to the bottom beam by bolts.
[0010] Furthermore, a first longitudinal rib plate and a second longitudinal rib plate are fixed to the inner side surface of the bottom beam, the angle between the second longitudinal rib plate and the inner side surface of the bottom beam is greater than 120 degrees, and the second longitudinal rib is inclined downward.
[0011] Furthermore, the inner side surface of the first ear plate does not protrude from the inner side surface of the guide groove.
[0012] Compared with the prior art, the utility model has the following technical effects:
[0013] The guide wheel of the utility model is independently connected to the elbow, no longer occupies the inner space, and effectively reduces the height occupied by the elbow turning point. The first wear-resistant bottom plate presses the top of the fourth pin shaft to prevent the fourth pin shaft from jumping out. The connecting plate and the lower clamping plate are fixed by bolts, thereby increasing the stability of the second pin shaft. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present invention, and do not constitute a limitation of the present invention. In the drawings:
[0015] Figure 1 This is a schematic diagram of the structure of the guide groove, elbow and bottom beam of the utility model;
[0016] Figure 2 To embody the exploded view of the utility model;
[0017] Figure 3 A front view showing the working state of the utility model;
[0018] Figure 4 A top view showing the working state of the utility model;
[0019] Figure 5 A cross-sectional view showing the working state of the utility model.
[0020] Explanation of the accompanying drawings: 1. guide groove; 11. first ear plate; 12. inner side of the guide groove; 13. inner side of the first ear plate; 2. first pin; 3. elbow; 31. second ear plate; 32. clamping plate; 33. third ear plate; 34. first wear-resistant bottom plate; 35. first inner wear-resistant plate; 36. first elbow side; 37. second elbow side; 4. second pin; 41. connecting plate; 5. third pin; 6. bottom beam; 61. fourth ear plate; 62. bottom edge of ear plate; 63. first longitudinal rib plate; 64. second longitudinal rib plate; 65. inner side of bottom beam; 66. second inner wear-resistant plate; 67. second wear-resistant bottom plate; 7. guide wheel; 8. fourth pin; 9. digging chain. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in combination with the implementation mode and the accompanying drawings. Here, the schematic implementation mode of the utility model and its description are used to explain the utility model, but are not used as a limitation of the utility model.
[0022] Reference Figure 1 and Figure 2 A guide groove and excavation bottom beam connection structure includes a bottom beam 6 and a guide groove 1, an elbow 3 is arranged between the bottom beam 6 and the guide groove 1, and the bottom beam 6 and the guide groove 1 are connected through the elbow 3. Two first ear plates 11 arranged at intervals in an upper and lower direction are fixed on the side of the guide groove 1 close to the elbow 3, and pin holes are opened on the two first ear plates 11. The inner side surface 13 of the first ear plate does not protrude from the inner side surface 12 of the guide groove, and the inner side surface 12 of the guide groove corresponds to the side end surface of the sleeper. If the inner side surface 13 of the first ear plate protrudes from the inner side surface 12 of the guide groove, it will occupy the side space.
[0023] Two groups of second ear plates 31 are fixed on the side of the elbow 3 close to the guide groove 1, each group of second ear plates 31 is provided with two, and the two groups of second ear plates 31 are arranged up and down, and each first ear plate 11 corresponds to a group of second ear plates 31. Pin holes are opened on the second ear plates 31, wherein the upper first ear plate 11 is inserted between the two upper second ear plates 31 and fixed by the first pin shaft 2. The lower first ear plate 11 is inserted between the two lower second ear plates 31 and fixed by the fourth pin shaft 8. After the elbow 3 and the guide groove 1 are connected as a whole through the first pin shaft 2 and the fourth pin shaft 8, a certain angle of rotation can be achieved.
[0024] The inner wall of the elbow 3 is provided with a first elbow side surface 36 and a second elbow side surface 37, and the first elbow side surface 36 and the second elbow side surface 37 transition to 90 degrees through an arc. Two vertically arranged perforated clamping plates 32 are fixed on the inner wall of the elbow 3 at the turning point, a guide wheel 7 is arranged between the two clamping plates 32, and the guide wheel 7 and the clamping plate 32 are fixed by a second pin shaft 4, a connecting plate 41 is fixed to the bottom of the second pin shaft 4, and bolt holes are provided on the connecting plate 41 and the clamping plate 32 below, and the connecting plate 41 and the clamping plate 32 below are fixed by bolts, thereby increasing the stability of the second pin shaft 4.
[0025] A fourth ear plate 61 is fixed to the side of the inner side surface 65 of the bottom beam close to the elbow 3, and a side of the fourth ear plate 61 close to the inner side surface 65 of the bottom beam is an ear plate bottom edge 62. Two third ear plates 33 are fixed to the side of the elbow 3 close to the bottom beam 6. Pin holes are provided on the third ear plates 33 and the fourth ear plate 61. The fourth ear plate 61 is inserted between the two third ear plates 33. The fourth ear plate 61 and the third ear plates 33 are connected as a whole through the third pin shaft 5. When the fourth ear plate 61 and the third ear plate 33 are fixed through the third pin shaft 5, the ear plate bottom edge 62 contacts the side surface of the second elbow 3.
[0026] The elbow 3 is provided with a first wear-resistant bottom plate 34 and a first inner wear-resistant plate 35, and the first wear-resistant bottom plate 34 and the first inner wear-resistant plate 35 are fixed to the elbow 3 by bolts. The first wear-resistant bottom plate 34 and the first inner wear-resistant plate 35 reduce the wear of the digging chain 9 and the ballast on the elbow 3, and play a protective role on the elbow 3. After the elbow 3 and the guide groove 1 are installed, the first wear-resistant bottom plate 34 presses the top of the fourth pin 8 to prevent the fourth pin 8 from jumping out. A pressure block (not shown in the figure) is fixed on the inner wall of the first inner wear-resistant plate 35, and the pressure block presses the top of the first pin 2.
[0027] The bottom beam 6 is provided with a second wear-resistant bottom plate 67 and a second inner wear-resistant plate 66, which are connected to the bottom beam 6 by bolts. The first longitudinal rib plate 63 and the second longitudinal rib plate 64 are fixed to the inner side surface 65 of the bottom beam, and the angle between the first longitudinal rib plate 63 and the inner side surface 65 of the bottom beam is greater than 120 degrees. The second longitudinal rib 64 is inclined downward to facilitate the discharge of crushed stone ballast from the ballast discharge port.
[0028] The implementation principle of the guide groove and excavation bottom beam connection structure of the utility model is: when working, it is necessary to dig out an operation opening at the corresponding construction position of the roadbed, and then put the bottom beam 6 and a section of the excavation chain 9 into the operation opening. The guide groove 1, the elbow 3 and the guide wheel 7 are pre-connected as one. The guide groove 1 is lowered to drive the elbow 3 to extend into the operation opening below the sleeper, and the bottom beam 6 is connected to the elbows 3 on both sides by the pin shaft and the excavation chain 9 is connected. The guide wheel 7 of the utility model is independently connected to the elbow 3, no longer occupying the inner space, and effectively reducing the height occupied by the bend 3.
[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims
1. A guide channel and excavation bottom beam connection structure, comprising a bottom beam (6), an elbow (3) and a guide channel (1), characterized in that: The bottom beam (6) is connected to the guide groove (1) via an elbow (3); two first ear plates (11) with pin holes arranged in an upper and lower manner are fixed on one side of the guide groove (1) close to the elbow (3); two groups of second ear plates (31) with pin holes are fixed on one side of the elbow (3) close to the guide groove (1); the upper first ear plate (11) and one group of the second ear plates (31) are connected to form a whole via a first pin shaft (2); the lower first ear plate (11) and the other group of the second ear plates (31) are connected to form a whole via a fourth pin shaft (8); and a second ear plate (11) is fixed to the inner wall of the elbow (3) at the turning point. Two perforated clamping plates (32) are arranged one above the other, the guide wheel (7) is located between the two clamping plates (32), the guide wheel (7) and the clamping plates (32) are connected to form a whole through a second pin shaft (4), a fourth ear plate (61) with a pin hole is fixed to one side of the bottom beam (6) close to the elbow (3), two third ear plates (33) with holes are fixed to one side of the elbow (3) close to the bottom beam (6), the fourth ear plate (61) is inserted between the two third ear plates (33), and the fourth ear plate (61) and the third ear plate (33) are connected to form a whole through a third pin shaft (5).
2. The guide groove and excavation bottom beam connection structure according to claim 1 is characterized in that: A first wear-resistant bottom plate (34) and a first inner wear-resistant plate (35) are fixed to the elbow (3) by bolts, and the first wear-resistant bottom plate (34) presses the top of the fourth pin shaft (8).
3. The guide channel and excavation bottom beam connection structure according to claim 1, characterized in that: A second wear-resistant bottom plate (67) and a second inner wear-resistant plate (66) are fixed to the bottom beam (6) by means of bolts.
4. The guide channel and excavation bottom beam connection structure according to claim 1, characterized in that: A first longitudinal rib plate (63) and a second longitudinal rib plate (64) are fixed to the inner side surface (65) of the bottom beam, the angle between the second longitudinal rib plate (64) and the inner side surface (65) of the bottom beam is greater than 120 degrees, and the second longitudinal rib plate (64) is inclined downward.
5. The guide channel and excavation bottom beam connection structure according to claim 1, characterized in that: The inner side surface (13) of the first ear plate does not protrude from the inner side surface (12) of the guide groove.