Counter-force device for roadbed slab load test

Abstract

The utility model discloses a counterforce device for a roadbed slab load test, which belongs to the technical field of railway roadbed detection, and comprises a counterforce device, a steel rail and a counterforce beam, the counterforce device comprises a fixed top plate, a movable bottom plate, a fixed connecting plate and a movable mounting plate, the steel rail is installed between the fixed top plate and the movable bottom plate through a connecting mechanism, the fixed top plate is fixedly connected with a supporting rod, the fixed connecting plate is fixedly connected to the supporting rod, and the movable mounting plate is connected to the supporting rod in a sliding mode. According to the counter-force device for the roadbed slab load test, the whole counter-force beam is supported through the movable mounting plate instead of supporting and fixing the counter-force beam through bolts in the prior art, the supporting effect on the counter-force beam is improved, the mounting height value of the movable mounting plate is adjusted through the adjusting mechanism, and the mounting efficiency of the counter-force beam is improved. The height value of the counter-force beam can be adjusted to make contact with the top of the counter-force rod.

Description

Technical Field

[0001] The utility model relates to the technical field of railway roadbed detection, in particular to a reaction force device used for roadbed flat plate load test. Background Art

[0002] Subgrade defects will affect the transportation capacity and order of railways. Therefore, existing ballasted railways need to regularly repair the defective subgrade to ensure the continued normal operation of trains. The repair of traditional ballasted railway subgrades is basically carried out by manpower, which has low efficiency and difficult to control quality. In addition, due to the limitations of construction windows and work sites, the thickness of the subgrade replacement is generally only about 0.3m.

[0003] In the prior art, the authorization announcement number is: CN107246992B, a reaction device and a field test method for a roadbed plate load test, the reaction device includes a pair of screw support mechanisms respectively fixedly connected to the steel rails on both sides and a reaction beam arranged between the two screw support mechanisms, the bottom surface of the reaction beam contacts with the reaction rod and provides a reaction force for the reaction rod.

[0004] However, the inventor of the device in the above invention believes that there are certain defects. The above device uses a large number of bolts to install and fix the reaction device, and the disassembly and installation procedures are complicated and cumbersome. In addition, bolts are used to support and fix the reaction beam, and the supporting effect is poor. In order to solve this technical problem, the utility model proposes a reaction device for roadbed plate load test. Utility Model Content

[0005] The main purpose of the utility model is to provide a reaction force device for roadbed plate load test, which can effectively solve the problems mentioned in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A reaction force device for a roadbed plate load test comprises a reaction force device, a rail and a reaction force beam, wherein the reaction force device comprises a fixed top plate, a movable bottom plate, a fixed connecting plate and a movable mounting plate, the rail is installed between the fixed top plate and the movable bottom plate through a connecting mechanism, a support rod is fixedly connected to the fixed top plate, the fixed connecting plate is fixedly connected to the support rod, the movable mounting plate is slidably connected to the support rod, the reaction force beam is installed on the movable mounting plate, and an adjustment mechanism for adjusting the installation height value of the movable mounting plate is provided between the fixed connecting plate and the movable mounting plate.

[0008] Preferably, the connection mechanism comprises a sliding sleeve fixed on the movable bottom plate, and the bottom of the support rod is slidably connected to the inside of the sliding sleeve.

[0009] Preferably, the sliding sleeve is provided with a limiting bolt for limiting the sliding of the sliding sleeve, and the limiting bolt is detachably connected to the sliding sleeve.

[0010] Preferably, a first slide groove matching the bottom of the rail is provided on the top of the movable bottom plate, and the bottom of the reaction beam is detachably connected to the movable mounting plate by bolts.

[0011] Preferably, the adjustment mechanism includes two adjustment seats, each of which is hinged with an upper connecting rod and a lower connecting rod through a pin shaft, the top of the fixed connecting plate is fixedly connected to the lower fixed seat, the other end of the lower connecting rod is hinged to the lower fixed seat through a pin shaft, and the bottom of the movable mounting plate is fixedly connected to the upper fixed seat, and the other end of the upper connecting rod is hinged to the upper fixed seat through a pin shaft.

[0012] Preferably, the adjustment mechanism further comprises an adjustment screw disposed between the two adjustment seats, and the two adjustment seats are both threadedly connected to the adjustment screw.

[0013] Preferably, a second slide groove matching the reaction beam is provided at the top of the movable mounting plate, and a plug hole is provided at the bottom of the reaction beam.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In the utility model, the reaction rod in the flat plate load meter is installed at the bottom of the reaction beam, pre-pressure is applied to check the working state of the reaction device, and then the roadbed flat plate load test is carried out. After the test of the measuring point is completed, the connection mechanism between the fixed top plate and the movable bottom plate is disassembled, and the device is moved to the next detection point. The detection of all measuring points can be completed by multiple operations. The reaction beam is supported as a whole by the movable mounting plate, which replaces the previous support and fixation of the reaction beam by bolts, thereby improving the support effect of the reaction beam, and the installation height value of the movable mounting plate is adjusted by the adjustment mechanism, so that the height value of the reaction beam is adjusted to contact the top of the reaction rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a reaction force device for a roadbed plate load test according to the utility model;

[0017] Figure 2 This is a schematic diagram of a rail installation structure of a reaction device for a roadbed flat plate load test according to the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of an adjustment mechanism of a reaction force device for a roadbed plate load test according to the utility model;

[0019] Figure 4The utility model is a reaction force device for roadbed plate load test Figure 3 A magnified schematic diagram;

[0020] Figure 5 The utility model is a schematic diagram of a reaction beam structure of a reaction device for a roadbed plate load test.

[0021] In the figure: 1. support rod; 2. fixed top plate; 3. movable bottom plate; 31. sliding sleeve; 32. limiting bolt; 4. fixed connecting plate; 41. lower fixing seat; 42. lower connecting rod; 5. movable mounting plate; 51. upper fixing seat; 52. upper connecting rod; 6. rail; 7. reaction beam; 71. socket; 8. adjusting screw; 81. adjusting seat. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1-5 As shown, a reaction force device for a roadbed plate load test comprises a reaction force device, a rail 6 and a reaction force beam 7, the reaction force device comprises a fixed top plate 2, a movable bottom plate 3, a fixed connecting plate 4 and a movable mounting plate 5, the rail 6 is mounted between the fixed top plate 2 and the movable bottom plate 3 through a connecting mechanism, a support rod 1 is fixedly connected to the fixed top plate 2, the connecting mechanism comprises a sliding sleeve 31 fixed to the movable bottom plate 3, the bottom of the support rod 1 is slidably connected to the inside of the sliding sleeve 31, a limiting bolt 32 for limiting the sliding of the sliding sleeve 31 is provided on the sliding sleeve 31, the limiting bolt 32 is detachably connected to the sliding sleeve 31, the reaction force device is mounted on the rail 6 by setting the fixed top plate 2 and the movable bottom plate 3, the supporting rod 1 is separated from the sliding sleeve 31 by removing the limiting bolt 32 on the sliding sleeve 31, so that the movable bottom plate 3 is removed from the bottom of the rail 6, so as to quickly move the reaction force to the next measuring point for detection.

[0024] like Figure 1 and Figure 3 As shown, the fixed connecting plate 4 is fixedly connected to the support rod 1, the movable mounting plate 5 is slidably connected to the support rod 1, the reaction beam 7 is installed on the movable mounting plate 5, and the top of the movable bottom plate 3 is provided with a first slide groove matching the bottom of the rail 6. The bottom of the reaction beam 7 and the movable mounting plate 5 are detachably connected by bolts. The reaction beam 7 is fixed to the movable mounting plate 5 by bolts, and the stability of the installation of the rail 6 is improved by the provision of the first slide groove. The provision of the movable mounting plate 5 replaces the previous method of supporting the reaction beam 7 by fixing with bolts, thereby improving the supporting effect and support strength of the reaction beam 7.

[0025] like Figure 1 , Figure 3 and Figure 4 As shown, an adjustment mechanism for adjusting the installation height value of the movable installation plate 5 is provided between the fixed connection plate 4 and the movable installation plate 5, and the adjustment mechanism includes two adjustment seats 81, each of which is hinged with an upper connecting rod 52 and a lower connecting rod 42 through a pin shaft, the top of the fixed connection plate 4 is fixedly connected to the lower fixed seat 41, and the other end of the lower connecting rod 42 is hinged to the lower fixed seat 41 through a pin shaft, and the bottom of the movable installation plate 5 is fixedly connected to the upper fixed seat 51, and the other end of the upper connecting rod 52 is hinged to the upper fixed seat 51 through a pin shaft, and the adjustment mechanism also includes two adjustment seats 81, each of which is hinged with an upper connecting rod 52 and a lower connecting rod 42 through a pin shaft, and ... upper connecting rod 52 is hinged to the upper fixing seat 51 through a pin shaft, and the adjustment mechanism also includes two adjustment seats 81, each of which is hinged with an upper connecting rod 52 and a lower connecting rod 42 through a pin shaft, and the upper connecting rod 52 is hinged to the upper fixing seat 51 through a pin shaft, and the upper connecting rod 52 is hinged to the upper fixing seat 51 through a pin shaft, and the upper connecting rod 52 is hinged to the upper fixing seat 51 through a pin shaft, and the upper connecting rod 52 is hinged to the upper fixing seat The adjusting screw 8 between the seats 81, the two adjusting seats 81 are both threadedly connected to the adjusting screw 8, the adjusting screw 8 is a screw with two sections of external threads, and the two sections of external threads are in opposite directions. The two adjusting seats 81 are driven to move closer to or away from each other by rotating the adjusting screw 8, and the movable mounting plate 5 is driven to slide on the support rod 1 under the action of the upper fixed seat 51, the upper connecting rod 52, the lower fixed seat 41 and the lower connecting rod 42, so as to adjust the installation height value of the movable mounting plate 5, and the operation is convenient and simple, so as to adjust the height value of the reaction beam 7 to contact the top of the reaction rod.

[0026] like Figure 1 , Figure 3 and Figure 5 As shown, a second slide groove matching the reaction beam 7 is provided on the top of the movable mounting plate 5, and a socket 71 is provided on the bottom of the reaction beam 7. The second slide groove is provided to improve the stability of the reaction beam 7 during installation, and the socket 71 is provided to facilitate the contact between the reaction rod in the flat load meter and the bottom of the reaction beam 7.

[0027] The utility model adopts the same detection method as the reaction force device and field test method for roadbed plate load test in Chinese patent announcement number CN107246992B, but improves the reaction force device therein to facilitate the convenience of detection.

[0028] It should be noted that, in actual use of the device, the fixed top plate 2 and the movable bottom plate 3 are installed on the rail 6 through the sliding sleeve 31 in the connecting mechanism, and then the limiting bolt 32 is screwed on to limit the sliding sleeve 31 from sliding on the bottom of the support rod 1, and the reaction beam 7 is fixed to the top of the movable mounting plate 5 by bolts, and then the two adjustment seats 81 are driven to move closer to or away from each other by rotating the adjusting screw 8, and the movable mounting plate 5 is driven to slide on the support rod 1 under the action of the upper fixed seat 51, the upper connecting rod 52, the lower fixed seat 41 and the lower connecting rod 42, so as to adjust the installation height value of the movable mounting plate 5, and the reaction rod in the flat load meter contacts the bottom of the reaction beam 7, so that the reaction rod is inserted into the inside of the socket 71 to perform a load test. After the test of this measuring point is completed, the connecting mechanism between the fixed top plate 2 and the movable bottom plate 3 is removed, and the reaction device is moved to the next detection point for detection.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A reaction force device for roadbed plate load test, characterized in that: The invention comprises a reaction force device, a steel rail (6) and a reaction force beam (7), wherein the reaction force device comprises a fixed top plate (2), a movable bottom plate (3), a fixed connecting plate (4) and a movable mounting plate (5), wherein the steel rail (6) is installed between the fixed top plate (2) and the movable bottom plate (3) via a connecting mechanism, a support rod (1) is fixedly connected to the fixed top plate (2), the fixed connecting plate (4) is fixedly connected to the support rod (1), the movable mounting plate (5) is slidably connected to the support rod (1), the reaction force beam (7) is installed on the movable mounting plate (5), and an adjusting mechanism for adjusting the installation height value of the movable mounting plate (5) is provided between the fixed connecting plate (4) and the movable mounting plate (5).

2. A reaction force device for roadbed plate load test according to claim 1, characterized in that: The connection mechanism comprises a sliding sleeve (31) fixed on the movable bottom plate (3), and the bottom of the support rod (1) is slidably connected inside the sliding sleeve (31).

3. A reaction force device for roadbed plate load test according to claim 2, characterized in that: The sliding sleeve (31) is provided with a limiting bolt (32) for limiting the sliding of the sliding sleeve (31), and the limiting bolt (32) is detachably connected to the sliding sleeve (31).

4. A reaction force device for roadbed plate load test according to claim 1, characterized in that: A first sliding groove matching the bottom of the rail (6) is provided on the top of the movable bottom plate (3), and the bottom of the reaction beam (7) is detachably connected to the movable mounting plate (5) via bolts.

5. The reaction force device for roadbed plate load test according to claim 1, characterized in that: The adjustment mechanism comprises two adjustment seats (81), each of the adjustment seats (81) is hinged to an upper connecting rod (52) and a lower connecting rod (42) via a pin shaft, the top of the fixed connecting plate (4) is fixedly connected to the lower fixed seat (41), the other end of the lower connecting rod (42) is hinged to the lower fixed seat (41) via a pin shaft, the bottom of the movable mounting plate (5) is fixedly connected to the upper fixed seat (51), and the other end of the upper connecting rod (52) is hinged to the upper fixed seat (51) via a pin shaft.

6. A reaction force device for roadbed plate load test according to claim 5, characterized in that: The adjustment mechanism further comprises an adjustment screw (8) arranged between two adjustment seats (81), and the two adjustment seats (81) are both threadedly connected to the adjustment screw (8).

7. The reaction force device for roadbed plate load test according to claim 1, characterized in that: A second sliding groove matching the reaction beam (7) is provided at the top of the movable mounting plate (5), and a plug hole (71) is provided at the bottom of the reaction beam (7).

Images