Portal lifting device for a two-liner trolley

Abstract

The utility model is suitable for the technical field of tunnel construction and provides a portal lifting device for secondary lining trolley, which comprises the following: a trolley body, an arcuate support plate is connected to the outside of the trolley body, at least one end of the trolley body is provided with a movable support, the movable support extends to the outside of the arcuate support plate, a base plate is arranged below the portal of the trolley body, an electric hydraulic rod for regulating and controlling the lifting of the portal is arranged on the base plate, a detachable cross plate is arranged on the push rod of the electric hydraulic rod, the cross plate is fixedly connected to the portal, and a connecting mechanism is arranged on the base plate and the push rod of the electric hydraulic rod. The portal lifting device for secondary lining trolley provided by the scheme realizes the lifting of the portal by driving the cross plate through the electric hydraulic rod, thereby expanding the operation range.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel construction technology, and in particular relates to a gantry lifting device for a secondary lining trolley. Background Technology

[0002] In railway and highway tunnel construction, secondary lining trolleys are widely used as key equipment for secondary lining construction to ensure construction safety and project quality. The construction process is usually as follows: first, a waterproof membrane is hung on the tunnel concrete wall, and then the secondary lining trolley is moved to the end of the invert arch to carry out secondary lining operations. This effectively copes with the risk of surrounding rock deformation and collapse that may occur under complex terrain conditions, and ensures the safety of construction personnel and equipment.

[0003] Existing patent CN203308472U discloses a multi-functional secondary lining trolley that uses a movable bracket at one end of the trolley to hang the waterproof membrane, eliminating the need for an additional fabric hanging trolley, thus saving costs and offering a practical structure. However, in actual construction, the trolley gantry, as a key support structure, directly affects the working range of the movable bracket, the trolley's maneuverability, and its adaptability to the tunnel cross-section. The existing structure cannot be flexibly adjusted to meet different needs, making it difficult to adapt to tunnel construction scenarios with varying cross-sectional dimensions. Utility Model Content

[0004] This utility model provides a gantry lifting device for a secondary lining trolley, which aims to solve the problem that the gantry of the existing secondary lining trolley cannot be raised or lowered.

[0005] This utility model is implemented as follows: a gantry lifting device for a secondary lining trolley, comprising: a trolley body, an arched support plate sleeved on the outside of the trolley body, a movable bracket at at least one end of the trolley body extending to the outside of the arched support plate; a base plate disposed below the gantry of the trolley body; an electro-hydraulic rod disposed on the base plate for adjusting the lifting of the gantry; a detachable cross plate disposed on the push rod of the electro-hydraulic rod, the cross plate being fixedly connected to the gantry; and a connecting mechanism disposed on the base plate and the push rod of the electro-hydraulic rod.

[0006] Preferably, the connecting mechanism includes: a first groove block and a second groove block respectively fixed on the base plate and the electro-hydraulic rod push rod; a first slider disposed in the first groove block, the top end of the first slider being fixedly connected to the base of the electro-hydraulic rod; and a second slider disposed in the second groove block, the top end of the second slider being fixedly connected to the cross plate.

[0007] Preferably, the connecting mechanism includes a limiting mechanism for limiting the first slider and the second slider. The limiting mechanism includes: mounting plates fixed to the base plate and the cross plate respectively; an electric telescopic rod fixed to the mounting plate, with a connecting frame fixed on the push rod of the electric telescopic rod; and a plug-in rod fixed to the connecting frame, with one end of the plug-in rod penetrating the mounting plate and inserting into the slots of the corresponding first slider and the second slider.

[0008] Preferably, guide plates are symmetrically fixedly installed on the top of the base plate, and sleeve plates are fitted on the guide plates, with the top of the sleeve plates being fixedly connected to the gantry.

[0009] Preferably, the first groove block and the second groove block are provided with insertion holes that can be adapted to the insertion rod.

[0010] Preferably, the connecting frame has a through hole that is adapted to the plug rod.

[0011] Preferably, the sleeve plate is provided with a square groove, which is adapted to the guide plate.

[0012] Compared with related technologies, the gantry lifting device for secondary lining trolleys provided by this utility model has the following beneficial effects:

[0013] The gantry is raised and lowered by driving the horizontal plate through the electric hydraulic rod, which expands the working range. The first groove block, the first slider, the second groove block, and the second slider in the connecting mechanism provide guidance and support, and the mounting plate, electric telescopic rod, connecting frame, and plug rod in the limiting mechanism provide fixation, which facilitates the installation and disassembly of the electric hydraulic rod. Attached Figure Description

[0014] Figure 1 A front view structural schematic diagram of a gantry lifting device for a secondary lining trolley provided by this utility model;

[0015] Figure 2 This is a schematic diagram of the front sectional view of the present invention;

[0016] Figure 3 for Figure 2 An enlarged structural diagram of part A shown in the figure;

[0017] Figure 4 This is a schematic diagram of the mounting plate in this utility model.

[0018] Reference numerals: 1. Vehicle body; 2. Arched support plate; 3. Movable bracket; 4. Base plate; 5. Electro-hydraulic rod; 6. Horizontal plate; 7. First groove block; 8. First slider; 9. Second groove block; 10. Second slider; 11. Mounting plate; 12. Electro-telescopic rod; 13. Connecting frame; 14. Insert rod; 15. Guide plate; 16. Sleeve plate. Detailed Implementation

[0019] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0020] This utility model embodiment provides a gantry lifting device for a secondary lining trolley, such as... Figure 1-4 As shown, the gantry lifting device for the secondary lining trolley includes: a car body 1, with an arched support plate 2 sleeved on the outside of the car body 1, and a movable bracket 3 at at least one end of the car body 1 extending to the outside of the arched support plate 2; a base plate 4, which is disposed below the gantry of the car body 1; an electro-hydraulic rod 5 disposed on the base plate 4 for adjusting the lifting of the gantry; a detachable cross plate 6 disposed on the push rod of the electro-hydraulic rod 5, which is fixedly connected to the gantry; and a connecting mechanism disposed on the base plate 4 and the push rod of the electro-hydraulic rod 5.

[0021] In this embodiment, when using the gantry lifting device, the electric hydraulic rod 5 on the base plate 4 is activated, and its push rod extends and retracts, causing the horizontal plate 6 to move up and down. Since the horizontal plate 6 is fixedly connected to the gantry, the gantry rises and falls synchronously with the horizontal plate 6, thereby completing the adjustment of the gantry height. During the adjustment process, the connection mechanism on the base plate 4 and the push rod of the electric hydraulic rod 5 can enhance the structural stability.

[0022] When it is necessary to hang a waterproof membrane, the gantry is raised by the electric hydraulic rod 5, which drives the movable support 3 to be adjusted to a suitable working height, so that construction personnel can operate on the movable support 3. When the trolley needs to pass through a narrow space or adapt to tunnels with different cross-sectional sizes, the height of the gantry is lowered to improve the trolley's passability.

[0023] The device can flexibly adjust the height of the gantry, expand the working range of the movable support 3, and improve the efficiency of waterproof membrane installation; enhance the adaptability of the trolley to different tunnel sections and improve the equipment versatility; the connecting mechanism ensures the stability of the lifting process, helps to improve construction safety, and reduces the difficulty of equipment adjustment.

[0024] In a further preferred embodiment of the present invention, the connecting mechanism includes: a first groove block 7 and a second groove block 9 respectively fixed on the base plate 4 and the push rod of the electric hydraulic rod 5; a first slider 8 disposed in the first groove block 7, the top end of the first slider 8 being fixedly connected to the base of the electric hydraulic rod 5; and a second slider 10 disposed in the second groove block 9, the top end of the second slider 10 being fixedly connected to the cross plate 6.

[0025] In this embodiment, the first groove block 7 is fixed on the base plate 4, and the first slider 8 is placed in the first groove block 7 and fixed to the base of the electric hydraulic rod 5; the second groove block 9 is fixed on the push rod of the electric hydraulic rod 5, and the second slider 10 is placed in the second groove block 9 and its top is fixed to the horizontal plate 6, thereby completing the connection between the electric hydraulic rod 5 and the horizontal plate 6; this connection mechanism facilitates the installation of the electric hydraulic rod 5 and the connection with the horizontal plate 6 through the cooperation of the groove block and the slider.

[0026] In a further preferred embodiment of this utility model, the connecting mechanism includes a limiting mechanism for limiting the first slider 8 and the second slider 10. The limiting mechanism includes: a mounting plate 11 fixed on the base plate 4 and the cross plate 6 respectively; an electric telescopic rod 12 fixed on the mounting plate 11, with a connecting frame 13 fixed on the push rod of the electric telescopic rod 12; and a plug-in rod 14 fixed on the connecting frame 13, with one end of the plug-in rod 14 penetrating the mounting plate 11 and inserting into the corresponding slots of the first slider 8 and the second slider 10.

[0027] In this embodiment, when it is necessary to limit the first slider 8 and the second slider 10, the electric telescopic rod 12 on the mounting plate 11 is activated. Its push rod extends and retracts, driving the connecting frame 13 to move. The connecting frame 13 then drives the insertion rod 14 to move, so that one end of the insertion rod 14 passes through the mounting plate 11 and is inserted into the corresponding slot of the first slider 8 and the second slider 10.

[0028] When the gantry is raised to the required height, and the first slider 8 and the second slider 10 stop sliding, the above operation allows the plug rod 14 to be inserted into the slot, which can fix the position of the first slider 8 and the second slider 10 and prevent them from sliding accidentally due to external forces during construction.

[0029] In a further preferred embodiment of the present invention, guide plates 15 are symmetrically fixedly installed on the top of the base plate 4, and sleeve plates 16 are sleeved on the guide plates 15, with the top of the sleeve plates 16 fixedly connected to the gantry.

[0030] In this embodiment, when the gantry is raised and lowered by the electro-hydraulic rod 5, the sleeve 16 will slide synchronously along the guide plate 15 with the gantry, and the guide plate 15 restricts the movement direction of the sleeve 16.

[0031] This structure, through the cooperation of guide plate 15 and sleeve plate 16, further enhances the stability of the gantry during lifting and lowering, and reduces gantry swaying.

[0032] In a further preferred embodiment of the present invention, the first groove block 7 and the second groove block 9 are provided with insertion holes that can be adapted to the insertion rod 14.

[0033] In this embodiment, the electric telescopic rod 12 drives the connecting frame 13 to move, so that the plug rod 14 can be inserted into the matching insertion hole on the first groove block 7 and the second groove block 9 after passing through the mounting plate 11; the plug rod 14 passes through the insertion hole and is inserted into the slot of the first slider 8 and the second slider 10, so that the first slider 8 and the second slider 10 are firmly restricted in the current position and are not easy to move.

[0034] In a further preferred embodiment of the present invention, the connecting frame 13 is provided with a through hole, which is adapted to the plug rod 14.

[0035] In this embodiment, when the electric telescopic rod 12 drives the connecting frame 13 to move, the connecting frame 13 drives the plug-in rod 14 to move synchronously through the through hole, so that the plug-in rod 14 can be accurately aligned and inserted into the corresponding plug hole and slot.

[0036] In a further preferred embodiment of the present invention, a square groove is provided on the sleeve plate 16, and the square groove is adapted to the guide plate 15.

[0037] In this embodiment, when the gantry is raised and lowered, the sleeve plate 16 moves, the square groove cooperates with the guide plate 15 to restrict the movement direction of the sleeve plate 16, so that the sleeve plate 16 slides smoothly along the guide plate 15.

[0038] The matching of the square groove with the guide plate 15 facilitates the installation and positioning of the sleeve 16; it can enhance the guiding effect when the sleeve 16 moves and reduce offset.

[0039] In summary, compared with related technologies, the lifting and lowering of the gantry is achieved by using the electric hydraulic rod 5 to drive the horizontal plate 6, which expands the working range. The guiding support of the first groove block 7, the first slider 8, the second groove block 9, and the second slider 10 in the connecting mechanism, as well as the fixing function of the mounting plate 11, the electric telescopic rod 12, the connecting frame 13, and the plug rod 14 in the limiting mechanism, facilitate the installation and disassembly of the electric hydraulic rod 5.

[0040] It is worth noting that the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0041] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0042] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A portal lifting device for a two-liner trolley, characterized in that, include: The vehicle body has an arched support plate fitted onto its exterior. At least one end of the vehicle body is provided with a movable bracket, which extends to the outside of the arched support plate. A base plate, wherein the base plate is disposed below the mast of the vehicle body; An electro-hydraulic rod is installed on the base plate for adjusting the lifting and lowering of the gantry. A detachable horizontal plate is mounted on the electro-hydraulic rod pusher and is fixedly connected to the gantry. A connection mechanism is provided on the push rod of the base plate and the electro-hydraulic rod.

2. The portal lifting device for a two-liner trolley according to claim 1, characterized in that, The connecting mechanism includes: The first groove block and the second groove block are respectively fixed on the base plate and the electric hydraulic rod push rod; A first slider is disposed within the first groove block, and the top end of the first slider is fixedly connected to the base of the electro-hydraulic rod; A second slider is disposed within the second groove block, and the top of the second slider is fixedly connected to the cross plate.

3. Portal lifting device for a two-liner trolley according to claim 2, characterized in that The connecting mechanism includes a limiting mechanism for limiting the movement of the first slider and the second slider, the limiting mechanism comprising: Mounting plates are respectively fixed on the base plate and the horizontal plate; An electric telescopic rod is fixed to the mounting plate, and a connecting frame is fixed to the push rod of the electric telescopic rod; A plug rod is fixed on the connecting frame, and one end of the plug rod passes through the mounting plate and is inserted into the slots of the corresponding first slider and second slider.

4. The portal lifting device for a two-liner buggy of claim 2, wherein, Guide plates are symmetrically fixedly installed on the top of the base plate, and sleeve plates are fitted on the guide plates. The top of the sleeve plates is fixedly connected to the gantry.

5. The portal lifting device for a two-liner buggy of claim 3, wherein, The first groove block and the second groove block are provided with insertion holes that can be adapted to the plug rod.

6. The portal lifting device for a two-liner buggy of claim 3, wherein, The connecting frame has a through hole, which is adapted to the plug rod.

7. The portal lifting device for a two-liner buggy of claim 4, wherein, The sleeve plate is provided with a square groove, which is adapted to the guide plate.

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