Drawing platform, heading machine and rear matching trailer of heading machine

Abstract

The utility model belongs to the technical field of tunneling equipment, and particularly provides a drawing platform, a tunneling machine and a rear matched trailer of the tunneling machine. The drawing platform comprises a support, the support is provided with an operation platform cabin used for drawing and moving of the operation platform, the support is connected with a moving seat, the moving seat is provided with a longitudinal moving rail used for being arranged on a trailer, the moving seat is provided with a hanging structure, and the hanging structure is provided with a moving part used for moving along the longitudinal moving rail. The rear matched trailer is provided with the drawing platform. The heading machine comprises the rear matching trailer which is consistent with the rear matching trailer in structure. The support of the drawing platform can move relative to the rear matched trailer, and the movement of the support drives the operation platform to move, so that the operation platform can cover a range exceeding the area of the platform, and the operation platform is suitable for maintenance operation of different positions of large-scale equipment.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel boring equipment, in particular to a pulling platform, a tunnel boring machine and a rear matching trailer. Background Art

[0002] The tunnel boring machine includes a main machine and a rear supporting system. The rear supporting system includes several trailers connected front and rear, which are equipped with supporting equipment such as electrical cabinets, frequency conversion cabinets, refrigeration units, and control cabinets. The various parts of the conventional tunnel boring machine rear supporting system are arranged relatively compactly, and the supporting equipment almost occupies the entire space on the upper part of the trailer. It is difficult to reserve a maintenance platform on the upper part of the trailer for the staff to move around and perform maintenance operations on various equipment. At present, when performing maintenance operations on various equipment, the common practice is to temporarily build an operating platform in a clear position in the tunnel, but this is inefficient and there are certain safety hazards in building a platform on site.

[0003] The Chinese utility model patent with authorization announcement number CN219865151U (publication date: 2023.10.20) discloses a pull-out platform, which includes a bracket and a work platform (pedal). The bracket can be fixedly connected to the bottom of the trailer, and a slide (work platform cabin) is provided on the bracket, and the work platform can move along the slide. The pull-out platform is fixed to the bottom of the trailer, which does not affect the normal layout of the supporting equipment. When in use, the work platform can be pulled out to facilitate maintenance work by the staff, which is more efficient.

[0004] However, for larger supporting equipment, a longer trailer is required, and the supporting equipment has more fault (maintenance) points. The above-mentioned pull-out platform is fixed on the trailer when in use, that is, the position of the maintenance operation is fixed, and the scope of maintenance work that can be provided by the staff is limited, and it is difficult to cover the entire supporting equipment. Utility Model Content

[0005] The purpose of the utility model is to provide a pull-out platform to solve the technical problem in the prior art that it is difficult to cover different positions of supporting equipment due to the fixed position of the pull-out platform. The purpose of the utility model is also to provide a roadheader and its supporting trailer to solve the same technical problem.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the pull-out platform provided by the utility model is:

[0007] A pulling platform comprises a bracket, on which is provided a working platform cabin for pulling and moving the working platform; the bracket is connected to a moving seat, the moving seat is provided with a longitudinal track for being arranged on a trailer, the longitudinal track extends along the front and rear direction of excavation; a hanging structure is provided on the moving seat, and the hanging structure has a moving part for moving along the extension direction of the longitudinal track.

[0008] As a further improvement, the hanging structure is provided with running wheels, and the running wheels form the moving part.

[0009] As a further improvement, the travel wheels are self-locking rollers.

[0010] As a further improvement, the longitudinal movement track includes hanging plates arranged in pairs, and the lower ends of the hanging plates of the same pair are provided with extension parts extending in the opposite direction for cooperating with the moving part.

[0011] As a further improvement, the bracket is connected with at least two longitudinally arranged movable seats.

[0012] As a further improvement, the bracket is connected to at least two transversely arranged moving seats, and different transversely arranged moving seats are respectively configured with corresponding longitudinal moving tracks.

[0013] As a further improvement, a limiting device for limiting the moving stroke of the moving seat is also provided on the longitudinal moving track.

[0014] As a further improvement, the limiting device includes limiting baffles arranged at both ends of the longitudinal movement track.

[0015] The beneficial effect of the utility model is that the utility model belongs to an improved invention. When in use, the pull-out platform can be installed on the rear supporting trailer through the longitudinal track. At this time, the bracket is hung on the longitudinal track through the hanging structure, and the bracket of the pull-out platform can also move along the longitudinal track through the movement and coordination of the moving part and the longitudinal track. The movement of the bracket also drives the movement of the working platform. In other words, the working platform in the utility model can cover a range beyond the area of ​​the platform itself, and is suitable for maintenance operations at different positions of large equipment.

[0016] In order to achieve the above-mentioned purpose, the technical solution of the rear-mounted trailer provided by the utility model is:

[0017] A rear-end trailer includes a frame with a pull-out platform installed on the frame. The pull-out platform includes a bracket, and the bracket is provided with a working platform cabin for pulling and moving the working platform. The bracket is connected to a moving seat, and the moving seat is equipped with a longitudinal track for being arranged on the trailer. The longitudinal track extends along the front and rear direction of excavation. A hanging structure is provided on the moving seat, and the hanging structure has a moving part for moving along the extension direction of the longitudinal track.

[0018] As a further improvement, the hanging structure is provided with running wheels, and the running wheels form the moving part.

[0019] As a further improvement, the travel wheels are self-locking rollers.

[0020] As a further improvement, the longitudinal movement track includes hanging plates arranged in pairs, and the lower ends of the hanging plates of the same pair are provided with extension parts extending in the opposite direction for cooperating with the moving part.

[0021] As a further improvement, the bracket is connected with at least two longitudinally arranged movable seats.

[0022] As a further improvement, the bracket is connected to at least two transversely arranged moving seats, and different transversely arranged moving seats are respectively configured with corresponding longitudinal moving tracks.

[0023] As a further improvement, a limiting device for limiting the moving stroke of the moving seat is also provided on the longitudinal moving track.

[0024] As a further improvement, the limiting device includes limiting baffles arranged at both ends of the longitudinal movement track.

[0025] The beneficial effect of the utility model is that the utility model belongs to an improved invention. When in use, the pull-out platform can be installed on the rear supporting trailer through the longitudinal track. At this time, the bracket is hung on the longitudinal track through the hanging structure, and the bracket of the pull-out platform can also move along the longitudinal track through the movement and coordination of the moving part and the longitudinal track. The movement of the bracket also drives the movement of the working platform. In other words, the working platform in the utility model can cover a range beyond the area of ​​the platform itself, and is suitable for maintenance operations at different positions of large equipment.

[0026] In order to achieve the above-mentioned purpose, the technical solution of the tunnel boring machine provided by the utility model is:

[0027] A tunnel boring machine includes a rear-mounted trailer, which includes a frame and a pulling platform installed on the frame. The pulling platform includes a bracket, on which is provided a working platform cabin for pulling and moving the working platform. The bracket is connected to a moving seat, and the moving seat is provided with a longitudinal track for being arranged on the trailer. The longitudinal track extends along the front and rear direction of tunneling. A hanging structure is provided on the moving seat, and the hanging structure has a moving part for moving along the extension direction of the longitudinal track.

[0028] As a further improvement, the hanging structure is provided with running wheels, and the running wheels form the moving part.

[0029] As a further improvement, the travel wheels are self-locking rollers.

[0030] As a further improvement, the longitudinal movement track includes hanging plates arranged in pairs, and the lower ends of the hanging plates of the same pair are provided with extension parts extending in the opposite direction for cooperating with the moving part.

[0031] As a further improvement, the bracket is connected with at least two longitudinally arranged movable seats.

[0032] As a further improvement, the bracket is connected to at least two transversely arranged moving seats, and different transversely arranged moving seats are respectively configured with corresponding longitudinal moving tracks.

[0033] As a further improvement, a limiting device for limiting the moving stroke of the moving seat is also provided on the longitudinal moving track.

[0034] As a further improvement, the limiting device includes limiting baffles arranged at both ends of the longitudinal movement track.

[0035] The beneficial effect of the utility model is that the utility model belongs to an improved invention. When in use, the pull-out platform can be installed on the rear supporting trailer through the longitudinal track. At this time, the bracket is hung on the longitudinal track through the hanging structure, and the bracket of the pull-out platform can also move along the longitudinal track through the movement and coordination of the moving part and the longitudinal track. The movement of the bracket also drives the movement of the working platform. In other words, the working platform in the utility model can cover a range beyond the area of ​​the platform itself, and is suitable for maintenance operations at different positions of large equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the embodiment of the pull-out platform of the utility model when it is installed on the rear supporting trailer from the perspective of the tunnel excavation direction;

[0037] Figure 2 It is a schematic diagram of the embodiment of the pull-out platform of the utility model when it is installed on the rear supporting trailer along the tunnel cross-section direction and the working platform is not pulled out;

[0038] Figure 3 It is a schematic diagram of the embodiment of the pull-out platform of the utility model when it is installed on the rear supporting trailer along the tunnel cross-section direction and when the working platform is pulled out;

[0039] Figure 4 for Figure 1 A partial enlarged view of the installation position of the middle pull-out platform;

[0040] Figure 5 for Figure 4 A partial enlarged view of the end of the middle longitudinal track;

[0041] Figure 6 for Figure 3 A partial enlarged view of the installation position of the middle pull-out platform;

[0042] Figure 7 for Figure 6 A partial enlarged view of the position of the middle moving seat.

[0043] Description of reference numerals:

[0044] 1. Rear supporting trailer; 2. Pulling platform; 101. Frame; 102. Longitudinal track; 103. Limit baffle; 104. Screw; 201. Bracket; 202. Moving seat; 203. Working platform; 204. Proximity switch; 205. Chain; 206. Limit pin; 207. Traveling wheel; 208. Limit hole; 209. Moving part. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below in conjunction with the embodiments.

[0046] For large-scale supporting equipment for tunnel boring machines, there are many fault points or points that need to be checked, and one maintenance may require switching back and forth between different positions. The existing pull-out platform directly connected to the rear supporting trailer is fixed relative to the trailer, and the working range it can provide for the staff is limited to the working platform area of ​​the pull-out platform itself. In order to solve this problem, the basic technical concept of the utility model is to add a moving seat to the pull-out platform without excessively increasing the working platform area of ​​the pull-out platform itself, and configure a longitudinal track that can be installed on the rear supporting trailer. The pull-out platform is suspended on the longitudinal track through the moving seat. When in use, the pull-out platform is pushed along the longitudinal track as needed to change the position of the pull-out platform to meet the needs of the staff.

[0047] Specific embodiment 1 of the pull-out platform provided by the utility model:

[0048] The pull-out platform 2 provided in this embodiment is as follows Figure 1-Figure 7 As shown, it can be installed on the rear trailer 1 of the tunnel boring machine when in use. In order to explain this embodiment more clearly, the horizontal and longitudinal directions are first explained. For the rear trailer, its forward direction corresponds to the longitudinal direction, that is, the front and rear direction of the tunnel or the trailer movement or excavation; the direction perpendicular to the longitudinal direction and parallel to the ground is the horizontal direction, that is, the left and right direction of the tunnel.

[0049] In order to meet the basic working requirements of the staff, the pull-out platform 2 in this embodiment includes a bracket 201 and a working platform 203. Figure 4-Figure 7 As shown, the support 201 supports the work platform 203 and provides a storage position for the work platform 203 to be pulled back for storage. In order to ensure that the work platform 203 can be pulled out smoothly, the support 201 should be provided with a work platform cabin for the work platform 203 to move. Specifically, the work platform 203 can move relative to the support 201 in a sliding manner. For the support 201, it can be as follows Figure 4The illustrated embodiment includes two brackets 201, one in front and one in the back, which respectively support the front and rear ends of the work platform 203. The brackets may also be rectangular box-shaped brackets, and the work platform 203 is completely nested in the brackets. In short, the brackets 201 can support, store, and allow the work platform to move.

[0050] The bracket 201 is connected with a moving seat 202. In order to meet the movement of the moving seat 202, the pulling platform 2 is also equipped with a longitudinal track 102 that can be installed on the rear supporting trailer 1. The so-called longitudinal track 102 refers to a track extending along the direction of the trailer's forward and backward movement (longitudinal direction), which can also be understood as a track extending along the front and rear direction of excavation and for the moving seat 202 to move along the front and rear direction of excavation (longitudinal direction). When in use, the pulling platform 2 is installed on the frame 101 of the rear supporting trailer 1 as a whole through the longitudinal track 102, and the moving seat 202 is suspended on the longitudinal track 102 and can move along the longitudinal track, that is, the moving seat 202 is provided with a hanging structure for hanging on the longitudinal track 102, and the hanging structure also has a moving part for moving along the longitudinal track, and moving along the longitudinal track means that the moving seat 202 moves relative to the front and rear direction of excavation.

[0051] In order to meet the overall hanging support of the pull-out platform, the hanging structure can be a support structure with a certain span to ensure that the hanging structure can form a force arm, which can be realized in various forms. As an implementation method of the hanging structure, Figure 6 and Figure 7 As shown, the moving seat 202 is provided with moving parts 209 arranged in pairs, and each pair of moving parts 209 extends in opposite directions. Correspondingly, the longitudinal moving track 102 should have two planes respectively matched with the moving parts 209, such as Figure 7 As shown, the longitudinal track 102 includes a pair of hanging plates, and the lower ends of the same pair of hanging plates are provided with an extension portion extending in the opposite direction for cooperating with the moving part 209. When the moving parts 209 extend in a direction away from each other, as shown in FIG. Figure 7 As shown, the extended portion of the lower end of the longitudinal track 102 should be located outside the moving part 209. In other embodiments, when the moving parts 209 extend in a direction approaching each other, the extended portion of the lower end of the longitudinal track 102 should be located inside the moving part 209. In this case, an I-shaped track can be directly used, and the lower wing plate of the track forms a surface for the moving part 209 to move.

[0052] In other embodiments, the hanging structure may include only one moving part, for example Figure 7 The moving part 209 on the middle right side is omitted, the longitudinal length of the moving part 209 is appropriately extended, and the longitudinal moving track 102 on the right side is moved to the left to reduce the gap between the hanging plates of the two longitudinal moving tracks 102 to ensure that the moving seat 202 does not fall off.

[0053] In order to meet the overall hanging support of the pull-out platform, in addition to the above structure, different numbers of movable seats can also be set on the bracket to achieve it. Figure 4 As shown, since the bracket 201 in this embodiment includes two split types, the front and rear brackets 201 must be provided with movable seats to ensure that the bracket 201 is stably supported, that is, the movable seat 202 also includes two arranged in the front and rear. Of course, if an intermediate bracket is also provided between the front and rear brackets 101, the intermediate bracket should also be provided with a movable seat, that is, the movable seat includes three arranged in the longitudinal direction. In other embodiments, if the bracket 201 is a complete box-type bracket, the movable seat can be provided with only one. In order to ensure that the bracket 201 is stably supported, the longitudinal length of the movable seat can be extended to extend the longitudinal support span of the movable seat. Of course, more than two movable seats can also be provided in the longitudinal direction for the box-type bracket.

[0054] In the horizontal direction, Figure 6 As shown, in this embodiment, the bracket 201 is connected to two transversely arranged moving seats 202. Correspondingly, two longitudinal tracks 102 should also be provided, and each moving seat 202 moves along different longitudinal tracks 102. This ensures that the moving seat 202 can have a larger transverse support span. For a larger work platform, more than three transversely arranged moving seats 202 can also be provided. Of course, the transversely arranged moving seat 202 can also include only one. In this case, in order to meet the stability of the support, the transverse width of the moving seat can be appropriately extended.

[0055] In order to reduce the resistance when moving the pull-out platform 2, the moving part 209 in the present embodiment is specifically formed by the running wheel 207. At this time, the friction force of the moving seat relative to the longitudinal track is rolling friction, and the resistance coefficient is smaller. In order to avoid the pull-out platform from moving when the staff is working, the running wheel 207 in the present embodiment is a self-locking roller, so that when the pull-out platform 2 moves to a certain position, the running wheel 207 can be locked, thereby also locking the pull-out platform 2 at the determined position. According to actual conditions, if the running wheel 207 is not a self-locking roller, when used on site, when the running wheel 207 moves to a determined position, a wedge or the like can be used to pad under the running wheel 207 to prevent the running wheel 207 from moving.

[0056] like Figure 2 and Figure 3As shown, in this embodiment, the pull-out platform 2 is arranged on both sides of the vehicle frame 101. When in use, the working platform of the pull-out platform 2 can be pulled out inward for the staff to perform maintenance work. After the maintenance is completed, the working platform can be directly pushed back without affecting the normal excavation. Compared with the prior art, the pull-out platform 2 in this embodiment can be moved along the longitudinal track 102 when in use, so the pull-out platform 2 can be moved to a position convenient for maintenance first, and then the working platform can be pulled out, which can adapt to maintenance work at different positions of the equipment.

[0057] In addition, regarding the longitudinal track 102, in order to prevent the moving seat from falling off the longitudinal track 102 when moving, a limit device for limiting the limit travel of the moving seat is also provided on the longitudinal track 102. Figure 4 and Figure 5 As shown, the two ends of the longitudinal track 102 are connected to the limit baffle 103 by screws 104, and the limit baffle 103 plays a limiting role. The use of screws 104 to connect the limit baffle 103 here is to facilitate disassembly in the later stage. In other embodiments, the limit baffle 103 can also be directly welded to the two ends of the longitudinal track. In other embodiments, the limit device can also be in other forms, such as setting a stop pin on a side of the longitudinal track.

[0058] Of course, according to the actual situation, if there are structures such as wedge blocks on the construction site, it is not necessary to set a limiting device on the longitudinal track, and the wedge blocks can be used for limiting on site.

[0059] In addition, if Figure 6 As shown, the bracket 201 of the pull-out platform 2 in this embodiment is also provided with a proximity switch 204 and an alarm system. After the proximity switch 204 is pulled out, the proximity switch 204 is closed, the circuit of the alarm system is connected, and an alarm signal is issued to remind the surrounding personnel to pay attention to safety. A limit hole 208 for inserting a limit pin 206 is also provided between the bracket 201 and the working platform 203 to ensure that the working platform 203 will not be accidentally pulled out after being retracted, and will not be accidentally retracted after being pulled out. In order to prevent the limit pin from being lost and falling off, the limit pin 206 in this embodiment is installed on the bracket 201 through a chain 205.

[0060] Specific embodiments of the rear-mounted trailer in the utility model:

[0061] The rear supporting trailer includes a frame, on which is provided a pull-out platform having the same structure as the above-mentioned pull-out platform embodiment, which will not be described repeatedly here.

[0062] Specific embodiment of the tunnel boring machine in the utility model:

[0063] The tunnel boring machine includes a rear supporting trailer, which includes a frame. The frame is provided with a pulling platform that is consistent with the structure of the above-mentioned pulling platform embodiment, and the description will not be repeated here.

[0064] Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments without creative work, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A pull-out platform, comprising a bracket, on which is provided a work platform cabin for pulling and moving the work platform, characterized in that: A moving seat is connected to the bracket, and the moving seat is equipped with a longitudinal track for being arranged on a trailer. The longitudinal track extends along the front and rear directions of excavation. A hanging structure is provided on the moving seat, and the hanging structure has a moving part for moving along the extension direction of the longitudinal track.

2. The pull-out platform according to claim 1, characterized in that: The hanging structure is provided with running wheels, which form the moving part.

3. The pull-out platform according to claim 2, characterized in that: The travel wheels are self-locking rollers.

4. The pull-out platform according to any one of claims 1 to 3, characterized in that: The longitudinal movement track comprises hanging plates arranged in pairs, and the lower ends of the hanging plates of the same pair are provided with extension parts extending in the opposite direction and used for cooperating with the moving part.

5. The pull-out platform according to claim 1, characterized in that: The bracket is connected with at least two longitudinally arranged movable seats.

6. The pull-out platform according to any one of claims 1 to 3 and 5, characterized in that: The bracket is connected with at least two transversely arranged moving seats, and different transversely arranged moving seats are respectively configured with corresponding longitudinal moving tracks.

7. The pull-out platform according to any one of claims 1 to 3 and 5, characterized in that: A limiting device for limiting the moving stroke of the moving seat is also provided on the longitudinal moving track.

8. The pull-out platform according to claim 7, characterized in that: The limiting device comprises limiting baffles arranged at both ends of the longitudinal movement track.

9. A rear-end trailer, comprising a frame, on which a pulling platform is mounted, characterized in that: The pull-out platform is the pull-out platform described in any one of claims 1-8.

10. A roadheader, comprising a rear supporting trailer, the rear supporting trailer comprising a frame, a pulling platform is mounted on the frame, characterized in that: The pull-out platform is the pull-out platform described in any one of claims 1-8.

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