A waterproof cloth laying trolley

Abstract

The present invention relates to the field of tunnel construction, and in particular to a trolley for laying waterproof cloth. It includes a trolley body, and a telescopic swing arm device installed on the trolley body for laying waterproof cloth. The technical problem to be solved by the present invention is to provide a trolley for laying waterproof cloth, which can automatically unfold the waterproof cloth, reduce the labor intensity of workers, and is convenient and safe to operate. The present invention has the following advantages: according to the shape of the tunnel, the distance between the swing arm device and the tunnel wall is adjusted by a telescopic swing arm mechanism, and the assembly is more convenient and quick. It can replace the trolley track type waterproof cloth laying mechanism such as an arc track, a traction system, a circular trolley, etc., which does not need to be towed and moved by the trolley track of the winch, and the operation is safer.

Description

Technical Field

[0001] The invention relates to the field of tunnel construction, and in particular to a waterproof cloth laying trolley. Background Art

[0002] The tarpaulin laying trolley is a work trolley specially designed for laying tarpaulins in tunnel construction. The tarpaulin trolleys currently in use mainly include two types: the simple trolley type and the winch-driven trolley running track type. The simple trolley type is welded from steel sections. Operators lay and press the tarpaulin on the trolley, which is very labor-intensive and time-consuming, unsafe to operate, and has low construction efficiency. The winch-driven trolley running track type is equipped with a traction wire rope or traction chain on the trolley, which is pulled and moved by the winch on the trolley. This type of tarpaulin trolley is pulled by a wire rope or chain, which has high safety risks and is inconvenient for construction workers to operate. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a trolley for laying a waterproof cloth, which can automatically unfold the waterproof cloth, reduce the labor intensity of workers, and is easy and safe to operate.

[0004] The present invention is achieved in that:

[0005] A waterproof cloth laying trolley comprises a trolley body and a telescopic swing arm device installed on the trolley body and used for laying the waterproof cloth.

[0006] Further:

[0007] The telescopic swing arm device comprises:

[0008] A reel for rolling up the tarpaulin and rotating the tarpaulin axially;

[0009] A telescopic swing arm mechanism is used to support the reel and enable the reel to move circumferentially.

[0010] Further:

[0011] The telescopic swing arm mechanism comprises:

[0012] A primary swing arm vertically arranged at both ends of the reel;

[0013] A secondary swing arm drives the primary swing arm to swing, the secondary swing arm is movably connected to the primary swing arm, and the connection angle with the primary swing arm is adjusted by a hydraulic cylinder;

[0014] A driving shaft that drives the secondary swing arm to swing, and a driving motor that drives the driving shaft to rotate.

[0015] The hydraulic cylinder is connected to a servo motor, and the movement of the hydraulic cylinder is controlled by the servo motor.

[0016] The servo motor is connected to a PLC controller.

[0017] The PLC controller is controlled by a programmable controller, and the telescopic length of the hydraulic cylinder is calculated by the programmable controller, as follows:

[0018] Set A as the center of the tunnel, B as the rotation center of the swing arm device, i.e. the position of the driving axis, C as the position of the reel, D as the connection point between the secondary swing arm and the primary swing arm, E as the connection point between the hydraulic cylinder and the secondary swing arm, F as the connection point between the hydraulic cylinder and the primary swing arm, EF as the telescopic distance of the hydraulic cylinder, where the lengths of AB, AC, BD, CD, DF, and ED are known, and the angles of ∠CBA, ∠FDC, and ∠BDE are known, calculate the length of FE;

[0019] (1) First calculate the angle ∠ACB

[0020] sin∠ACB=AB / (AC / sin∠CBA)

[0021] (2) Further calculate the angle ∠BAC

[0022] ∠BAC=180°-∠ACB-∠CBA

[0023] (3) Further calculate the length of CB

[0024] CB=BA / sin∠ACB*sin∠BAC

[0025] (4) Further calculate the angle of ∠BDC

[0026] cos∠BDC=(CD 2 +DB 2 -CB 2 ) / (2*CD*DB)

[0027] (5) Further calculate the angle of ∠EDF

[0028] ∠EDF=∠BDC-30°-6.5°

[0029] (6) Further calculate the length of FE

[0030] FE 2 =DF 2 +ED 2 -2*DF*ED*cos∠EDF.

[0031] The trolley body includes a plurality of trolley frames connected by longitudinal support rods, the trolley frames include a top beam, a cross beam, and longitudinal beams fixed to the bottom of the cross beam and arranged parallel to the two ends of the cross beam, the cross beam is fixedly connected to the top beam through a plurality of parallel columns and oblique support rods symmetrically arranged on both sides. The driving shaft of the telescopic swing arm device is horizontally and vertically arranged at the center of the cross beam, and is fixedly connected to the longitudinal support rod through a bearing seat.

[0032] A plurality of extension rods are arranged on the outer sides of the oblique support rod and the longitudinal beam.

[0033] The "several" mentioned above refers to two or more than two.

[0034] The invention has the following advantages: according to the shape of the tunnel, the distance between the swing arm device and the tunnel wall can be adjusted by the telescopic swing arm mechanism, and the assembly is more convenient and quick. It can replace the tarpaulin laying mechanism of the winch traction trolley walking track type, such as the arc track, traction system, circular trolley, etc., and does not need to be towed and moved by the winch traction trolley walking track, and the operation is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.

[0036] Figure 1 It is a structural schematic diagram of the present invention.

[0037] Figure 2 It is a structural schematic diagram of a telescopic swing arm device.

[0038] Figure 3 This is a usage state diagram of the present invention.

[0039] Figure 4 for Figure 1 Side view of.

[0040] Figure 5 This is a structural position relationship diagram. DETAILED DESCRIPTION

[0041] Example 1

[0042] See also Figure 1-Figure 4 As shown, a waterproof cloth laying trolley includes a trolley body and a telescopic swing arm device installed on the trolley body for laying the waterproof cloth.

[0043] The telescopic swing arm device comprises: a reel 1 for rolling up the waterproof cloth and making the waterproof cloth rotate axially, and a telescopic swing arm mechanism for supporting the reel and making the reel move circumferentially. The telescopic swing arm mechanism comprises: a primary swing arm 2 vertically arranged at both ends of the reel 1; a secondary swing arm 3 driving the primary swing arm 2 to swing, the secondary swing arm 3 is movably connected to the primary swing arm 2, and the connection angle with the primary swing arm 2 is adjusted by a hydraulic cylinder 4; a driving shaft 5 driving the secondary swing arm 3 to swing, and a driving motor 6 driving the driving shaft 5 to rotate.

[0044] The first-stage swing arm 2 is driven by the hydraulic cylinder 4 to adjust the swing arm angle, and the second-stage swing arm 3 is driven by the motor reducer 6 to drive the driving shaft 5 to rotate. The PLC controller controls the servo motor 7, and the servo motor 7 controls the hydraulic cylinder 4 to make linear motion. The control system is controlled by a PLC programmable controller, and the control method is wireless remote control operation, which can accurately calculate the telescopic length of the hydraulic cylinder. According to the shape of the tunnel, the connection angle between the second-stage swing arm 3 and the first-stage swing arm 2 is adjusted, and then the distance between the swing arm device and the tunnel wall 200 is adjusted.

[0045] The trolley body includes a plurality of trolley frames 100 connected by longitudinal support rods 10, and the trolley frames 100 include a top beam 101, a cross beam 102, and a longitudinal beam 103 fixed to the bottom of the cross beam 102 and arranged parallel to both ends of the cross beam 102. The cross beam 102 is fixedly connected to the top beam 101 through a plurality of parallel columns 104 and oblique support rods 105 symmetrically arranged on both sides. The driving shaft 5 of the telescopic swing arm device passes through the center of all cross beams 102 and extends to the outside of the trolley body, and is fixedly connected to the longitudinal support rod 10 through a bearing seat 11.

[0046] A plurality of extension rods 106 are disposed on the outer sides of the oblique support rods 105 and the longitudinal beams 103 , which facilitates the operation of technicians and can also enhance the overall stability of the trolley frame 100 .

[0047] Using the PLC programmable controller, the telescopic length of the hydraulic cylinder can be quickly calculated as follows:

[0048] like Figure 5 As shown, A is set as the center of the tunnel, B is the rotation center of the swing arm device, that is, the position of the driving shaft, C is the position of the reel, D is the connection point between the secondary swing arm and the primary swing arm, E is the connection point between the hydraulic cylinder and the secondary swing arm, F is the connection point between the hydraulic cylinder and the primary swing arm, and EF is the telescopic distance of the hydraulic cylinder.

[0049] Given: AB=2080, AC=7200, BD=500.25, CD=2790.29, DF=230, ED=805, the above length units are mm; if ∠CBA=70°, ∠FDC=30°, ∠BDE=6.5°, find: FE length.

[0050] untie:

[0051] 1. First find the angle ∠ACB (sine theorem)

[0052] sin∠ACB=AB / (AC / sin∠CBA)

[0053] 2. Further find the angle ∠BAC (the sum of the interior angles of a triangle)

[0054] ∠BAC=180°-∠ACB-∠CBA

[0055] 3. Further find the length of CB (sine theorem)

[0056] CB=BA / sin∠ACB*sin∠BAC

[0057] 4. Further find the angle of ∠BDC (cosine theorem)

[0058] cos∠BDC=(CD 2 +DB 2 -CB 2 ) / (2*CD*DB)

[0059] 5. Further find the angle of ∠EDF

[0060] ∠EDF=∠BDC-30°-6.5°

[0061] 6. Further find the length of FE (cosine theorem)

[0062] FE 2 =DF 2 +ED 2 -2*DF*ED*cos∠EDF

[0063] Finally, the telescopic distance of the hydraulic cylinder can be obtained, that is, the length of the servo hydraulic cylinder controlled by the PLC controller, so that the waterproof cloth on the reel is pressed and fits on the tunnel wall. By changing the position of point C, the telescopic length of the hydraulic cylinder is accurately calculated, so that the waterproof cloth is continuously pressed and fits on the tunnel wall, thus completing the laying of the tunnel waterproof board.

[0064] Although the specific implementation modes of the present invention are described above, those skilled in the art should understand that the specific implementation modes described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A waterproof cloth laying trolley, comprising a trolley body, characterized in that: It also includes a retractable swing arm device installed on the trolley body for laying the waterproof cloth; The telescopic swing arm device comprises: a reel for rolling up the waterproof cloth and making the waterproof cloth rotate axially; a telescopic swing arm mechanism for supporting the reel and making the reel move circumferentially; The telescopic swing arm mechanism comprises: a primary swing arm vertically arranged at both ends of the reel; a secondary swing arm driving the primary swing arm to swing, the secondary swing arm is movably connected to the primary swing arm, and the connection angle with the primary swing arm is adjusted by a hydraulic cylinder, the hydraulic cylinder is connected to a servo motor, and the movement of the hydraulic cylinder is controlled by the servo motor; the servo motor is connected to a PLC controller; a driving shaft driving the secondary swing arm to swing, and a driving motor driving the driving shaft to rotate; the PLC controller is controlled by a programmable controller, and the telescopic length of the hydraulic cylinder is calculated by using the programmable controller. The programming process is as follows: Set A as the center of the tunnel, B as the rotation center of the swing arm device, i.e. the position of the driving axis, C as the position of the reel, D as the connection point between the secondary swing arm and the primary swing arm, E as the connection point between the hydraulic cylinder and the secondary swing arm, F as the connection point between the hydraulic cylinder and the primary swing arm, EF as the telescopic distance of the hydraulic cylinder, where the lengths of AB, AC, BD, CD, DF, and ED are known, and the angles of ∠CBA, ∠FDC, and ∠BDE are known, calculate the length of FE; (1) First calculate the angle ∠ACB sin∠ACB=AB / (AC / sin∠CBA) (2) Further calculate the angle ∠BAC ∠BAC=180°-∠ACB-∠CBA (3) Further find the length of CB CB=BA / sin∠ACB*sin∠BAC (4) Further calculate the angle of ∠BDC cos∠BDC=(CD²+DB²-CB²) / (2*CD*DB) (5) Further find the angle of ∠EDF ∠EDF=∠BDC-30°-6.5° (6) Further find the length of FE FE²=DF²+ED²-2*DF*ED*cos∠EDF; The trolley body includes a plurality of trolley frames connected by longitudinal support rods, and the trolley frames include a top beam, a cross beam, and a longitudinal beam fixed to the bottom of the cross beam and arranged parallel to the two ends of the cross beam, and the cross beam is fixedly connected to the top beam through a plurality of parallel columns and oblique support rods symmetrically arranged on both sides; the driving shaft of the telescopic swing arm device is horizontally and vertically arranged at the center of the cross beam, and is fixedly connected to the longitudinal support rod through a bearing seat; a plurality of extension rods are arranged on the outside of the oblique support rod and the longitudinal beam.

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