A device for measuring the inertial overload distance of a monorail ramp track

Abstract

The present invention discloses a device for measuring the inertial overload distance of a monorail ramp track, comprising a load box and a measuring trolley; the measuring trolley comprises a roller frame, a trolley frame and an overload lowering assembly; the roller frames are all connected to rollers through a rotating shaft, the rollers are arranged in a guide groove of the monorail track, the lower parts of two groups of roller frames are fixedly connected to the trolley frame, the top of the load box is fixedly connected to two symmetrically distributed counterweight pull rods, the upper ends of the counterweight pull rods are movable through the trolley frame and are fixedly connected to a pull-down plate, a plurality of telescopic guide rods and a plurality of compression springs are fixedly connected between the pull-down plate and the trolley frame, at least one downward driving rack is fixedly connected to the lower part of the pull-down plate, and the top of the trolley frame is fixedly connected to an overload lowering assembly. In the present invention, a load is placed inside the load box, and as the load at the bottom of the ramp increases due to inertia, the most marked color block will contact the side wall of the guide groove in the monorail track, thereby achieving the purpose of overload mark measurement.

Description

Technical Field

[0001] The invention relates to the technical field of monorail cranes, in particular to a device for measuring the inertia overload distance of a ramp track of a monorail crane. Background Art

[0002] Monorail cranes are a type of conveying equipment commonly used in mining tunnels, usually for underground mining of coal and other minerals. They consist of a track suspended in the air and a locomotive that can travel along the track. The locomotive is equipped with a lifting hook or other lifting device to lift goods or materials.

[0003] Before using a monorail crane, a series of tests are usually required to ensure its safety and reliability. The load test operation of the monorail crane is one of them. The maximum load capacity of the monorail crane track is tested, which is usually determined by hanging a standard load on the hook and conducting rigorous tests. There is a maximum load standard in the design, but in the ramp position, due to the inertia of operation, the track at the bottom of the ramp is prone to overloading due to inertia, causing damage to the monorail crane track. This requires determining the distance range of its overload to strengthen the fixation of the monorail crane track and improve safety.

[0004] Currently there is no special equipment to measure and mark the inertial overload running position of a monorail crane. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a device for measuring the inertia overload distance of a monorail ramp track, which solves the problem of inertia overload distance measurement and position determination during monorail ramp track operation.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a monorail hanging ramp track running inertia overload distance measuring device, including a load box and a measuring trolley; the measuring trolley includes a roller frame, a trolley frame and an overload lowering assembly;

[0007] The roller frames are all rotatably connected with rollers via rotating shafts, and the rollers are rollingly arranged in the guide grooves of the monorail hanging track. The lower parts of the two groups of roller frames are fixedly connected to the trolley frame.

[0008] A load box is provided below the trolley frame, two symmetrically distributed counterweight pull rods are fixedly connected to the top of the load box, the upper end of the counterweight pull rod movably passes through the trolley frame and is fixedly connected to a pull-down plate, a plurality of telescopic guide rods and a plurality of compression springs are fixedly connected between the pull-down plate and the trolley frame, the compression springs are sleeved on the telescopic guide rods, at least one downward pressing driving rack is fixedly connected to the lower part of the pull-down plate, and an overload lowering component is fixedly connected to the top of the trolley frame;

[0009] The overload lowering assembly includes a driven plate fixed to the top of the trolley frame, the driven plate is provided with a rotatable internal threaded sleeve, a driven gear is fixedly connected to the internal threaded sleeve, the driven gear and the internal threaded sleeve are coaxially arranged, the driven gear is meshed with the downward driving rack, a screw is arranged in the internal threaded sleeve, when the internal threaded sleeve and the screw rotate relative to each other, the screw moves toward the monorail hanging track, and the driven plate is provided with a limit assembly to limit the rotation of the screw.

[0010] According to the inertia overload distance measuring device for the running of a monorail ramp track, the limit assembly includes a guide cylinder and a guide rod, the centers of the internal threaded sleeve and the guide cylinder are parallel and face the inner groove direction of the monorail track, the driven plate is provided with a guide cylinder at the lower part of the internal threaded sleeve, and a guide rod is provided in the guide cylinder, the two ends of the screw rod and the two ends of the guide rod are connected by end plates at the same time, and a marking block is provided on the end plate close to the monorail track side, and the marking block maintains a distance from the inner groove of the monorail track, and the distance is less than the maximum value of the relative movement distance between the screw rod and the internal threaded sleeve.

[0011] According to the monorail ramp track running inertia overload distance measuring device, a brake assembly is also provided, including a connecting rod hingedly connected to the middle part of the guide rod, the connecting rod and the guide rod form an acute angle toward the monorail track side, the other end of the connecting rod is hingedly connected to a push rod, the other end of the push rod is fixedly connected to an arc-shaped brake plate for braking the rotation of the roller, the roller frame is fixedly connected to a brake frame, the push rod movably penetrates the brake frame, and pushes the connecting rod and the push rod to move when the guide rod moves toward the monorail track.

[0012] According to the monorail ramp track running inertia overload distance measuring device, a counterweight block is provided in the load box, the weight of the counterweight block is adjustable, and a switch door is provided at the end of the load box through a hinge rotation, and the counterweight is placed in the load box through the switch door.

[0013] According to the monorail ramp track running inertia overload distance measuring device, it also includes a monorail crane locomotive, and the rear end of the trolley frame is provided with a connecting hook, and the connecting hook is connected to a connecting beam and connected to the monorail crane locomotive.

[0014] According to the monorail ramp track running inertia overload distance measuring device, the load box is a rectangular box with multiple layers of space inside, and a metal plate is placed into the load box from the switch door as a counterweight.

[0015] According to the monorail ramp track running inertia overload distance measuring device, four groups of roller frames are provided, two groups are arranged side by side on both sides of the monorail track, and each roller frame is provided with two groups of rollers.

[0016] According to the monorail ramp track running inertia overload distance measuring device, the wear color block is a colored chalk block.

[0017] The present invention provides the following beneficial effects:

[0018] 1. In the present invention, a load is placed inside the load box, which will pull the counterweight pull rod and the pull-down plate at the bottom thereof downward, and the downward-pressing driving rack will synchronously descend, and the downward-pressing driving rack will drive the driven gear to rotate, and the driven gear will drive the internal threaded sleeve to rotate, and the internal threaded sleeve will drive the screw to move linearly, so that the end plate moves toward the direction of the monorail hanging track. As the load increases, the end plate will eventually come into contact with the side wall of the guide groove in the monorail hanging track, thereby achieving the purpose of overload mark measurement.

[0019] 2. In the present invention, as the marking block wears, the end plate moves toward the direction of the monorail hanging track, driving the guide rod to move synchronously. The guide rod pushes the push rod to move in a straight line through the connecting rod, so that the arc-shaped brake plate contacts the roller to achieve locking, thereby preventing the device from continuing to operate in an out-of-control state. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a right-side stereoscopic structural diagram of the present invention;

[0021] Figure 2 It is a left-side stereoscopic structural diagram of the present invention;

[0022] Figure 3 for Figure 1 A magnified structural diagram;

[0023] Figure 4 for Figure 1 The enlarged structure diagram at B;

[0024] Figure 5 It is a cross-sectional view of the overload lowering assembly of the present invention;

[0025] In the figure: 1, monorail hanging track, 2, roller frame, 3, roller, 4, trolley frame, 5, load box, 501, switch door, 6, counterweight pull rod, 7, pull-down plate, 8, compression spring, 9, telescopic guide rod, 10, overload lowering assembly, 101, driven plate, 102, guide rod, 103, screw rod, 104, driven gear, 105, end plate, 106, internal threaded sleeve, 11, downward driving rack, 12, push rod, 13, brake frame, 14, arc brake plate, 15, connecting rod, 16, marking block. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] See also Figures 1 to 5 , the present invention provides a technical solution:

[0028] The monorail hanging ramp track running inertia overload distance measuring device of the present invention comprises a load box and a measuring trolley; the measuring trolley comprises a roller frame, a trolley frame 4 and an overload descending assembly.

[0029] A roller 3 is rotatably connected to the roller frame 2 via a rotating shaft, and the roller 3 is rotatably arranged in the guide groove of the monorail hanging track 1. The lower part of the roller frame 2 is fixedly connected to the trolley frame 4, and a load box 5 is arranged below the trolley frame 4. The top of the load box 5 is fixedly connected to two symmetrically distributed counterweight pull rods 6, and the upper end of the counterweight pull rod 6 movably passes through the trolley frame 4 and is fixedly connected to a pull-down plate 7. A plurality of telescopic guide rods 9 and a plurality of compression springs 8 are connected between the pull-down plate 7 and the trolley frame 4, and the compression spring 8 is sleeved on the telescopic guide rod 9. The lower part of the pull-down plate 7 is fixedly connected to a downward driving rack 11, and the top of the trolley frame 4 is fixedly connected to an overload lowering component 10.

[0030] Overload lowering assembly 10 as Figure 5 As shown, it includes a driven plate 101 fixed to the top of the trolley frame 4. The driven plate 101 is an L-shaped plate, one side of which is fixed to the trolley frame, and the other side is vertically arranged and parallel to the direction of the monorail track. The driven plate 101 is provided with a rotatable internal thread sleeve 106, and a driven gear 104 is fixed on the internal thread sleeve 106. The driven gear 104 is coaxially arranged with the internal thread sleeve 106, and the driven gear 104 is meshed with the downward driving rack 11. A screw rod 103 is arranged in the internal thread sleeve 106. When the internal thread sleeve 106 and the screw rod rotate relative to each other, the screw rod moves toward the monorail track, and the driven plate 101 is provided with a limit assembly to limit the rotation of the screw rod.

[0031] When the pull-down plate 7 is added with counterweight to the load box 5, it will drop synchronously, and will drop further when overloaded due to running inertia, thereby driving the pull-down overload lowering component 10 to drop, and driving the screw to move toward the monorail crane track.

[0032] The limiting assembly of the device includes a guide cylinder and a guide rod. The centers of the internal threaded sleeve 106 and the guide cylinder are parallel and face the inner groove direction of the monorail hanging track. The driven plate 101 is provided with a guide cylinder at the lower part of the internal threaded sleeve 106. A guide rod 102 is provided in the guide cylinder. Both ends of the screw rod 103 and both ends of the guide rod are connected by end plates 105 at the same time, and a replaceable marking block is provided on the end plate close to the monorail hanging track side. The marking block maintains a distance from the inner groove of the monorail hanging track, and the distance is less than the maximum relative movement distance of the screw rod and the internal threaded sleeve.

[0033] The limit assembly limits the rotation of the screw rod and provides a guiding function for the screw rod to move toward the monorail hanging track.

[0034] The marking block used in this device is a colored chalk block that can touch the monorail track and mark the overload distance when the counterweight is overloaded due to running inertia. The marking block will wear when it contacts the monorail track, thereby marking the overload position and distance.

[0035] The device is also provided with a brake assembly, including a connecting rod 15 hingedly connected to the middle part of the guide rod 102, the connecting rod 15 and the guide rod forming an acute angle toward the monorail hanging track side, the other end of the connecting rod 15 is hingedly connected to a push rod 12, the other end of the push rod 12 is fixedly connected to an arc-shaped brake plate 14 for rotating the brake roller 3, the roller frame 2 is fixedly connected to a brake frame 13, the push rod 12 movably penetrates the brake frame 13, and pushes the connecting rod and the push rod to move when the guide rod moves toward the monorail hanging track.

[0036] When the marking block is worn beyond the range and the screw moves beyond a certain distance, the connecting rod and the push rod will push the arc brake plate 14 to the braking position, and then the arc brake plate 14 contacts the roller to brake the roller to prevent the device from continuing to move and causing loss of control.

[0037] The counterweight pull rod 6 of the device can be provided with a scale to compare with the position of the trolley frame 4, so as to facilitate the measurement of the weight inside the load box 5; a counterweight block is provided in the load box 5, and the weight of the counterweight block is adjustable. A switch door 501 is provided at the end of the load box 5 through hinge rotation, and the counterweight is placed in the load box 5 through the switch door. The load box 5 is a rectangular box with multiple layers of space inside, and a metal plate is placed in the load box 5 from the switch door as a counterweight block.

[0038] When the device is used, it is equipped with a monorail crane, and a connecting hook is provided at the rear end of the trolley frame 4, and a connecting beam is connected to the connecting hook and connected to the monorail crane. Four groups of roller frames are provided, two groups are arranged side by side on both sides of the monorail crane track, and each roller frame is provided with two groups of rollers.

[0039] When the device is in use, the monorail crane is used to pull the device to the top of the ramp track, and then the device is released. The device slides freely on the track and measures the distance to the inertia overload mark at the bottom of the ramp of the track.

[0040] During the inertia overload marking, a load is placed inside the load box 5 when the device is used. The moving device will move from downhill to horizontal due to the change in the track. During this process, the load box of the device will exceed the actual weight value of flat road operation due to the inertia of movement. This process overloads the track, and at the same time, the load box 5 will pull the counterweight pull rod 6 and the pull-down plate 7 down, and the downward pressure driving rack 11 will synchronously drop. The downward pressure driving rack 11 drives the driven gear 104 to rotate, and the driven gear 104 drives the internal threaded sleeve 106 to rotate. The internal threaded sleeve 106 and the screw form a matching structure of the screw nut. The existing limiting component of the screw 103 limits the rotation, and the internal threaded sleeve 106 drives the screw 103 to move in a straight line, so that the end plate 105 moves in the direction of the monorail hanging track 1. As the load increases, the marking block of the end plate 105 will eventually come into contact with the side wall of the guide groove in the monorail hanging track 1, and the path of the inertia overload is marked and measured.

[0041] By controlling the increase of the internal load of the load box 5, it is possible to mark and measure the inertia overload distance under different load conditions, so as to analyze the load-carrying operation performance of the monorail track at the ramp position, and to specially reinforce the inertia overload range of the track at the bottom of the ramp to avoid track pull-down damage caused by inertia overload during operation.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A monorail ramp track running inertia overload distance measuring device, characterized in that: It comprises a load box and a measuring trolley; the measuring trolley comprises a roller frame (2), a trolley frame (4) and an overload lowering assembly; The roller frame (2) is rotatably connected to a roller (3) via a rotating shaft, and the roller (3) is rollingly arranged in a guide groove of a monorail hanging track (1). The lower part of the roller frame (2) is fixedly connected to a trolley frame (4), and a load box (5) is arranged below the trolley frame (4). The top of the load box (5) is fixedly connected to two symmetrically distributed counterweight rods (6), and the upper end of the counterweight rod (6) is movably penetrated through the trolley frame (4) and is fixedly connected to a pull-down plate (7). A plurality of telescopic guide rods (9) and a plurality of compression springs (8) are fixedly connected between the pull-down plate (7) and the trolley frame (4), and the compression springs (8) are sleeved on the telescopic guide rods (9). The lower part of the pull-down plate (7) is fixedly connected to at least one downward pressure driving rack (11), and the top of the trolley frame (4) is fixedly connected to an overload lowering component (10); The overload lowering assembly (10) comprises a driven plate (101) fixed to the top of the trolley frame (4), the driven plate (101) being provided with a rotatable internal thread sleeve (106), a driven gear (104) being fixedly connected to the internal thread sleeve (106), the driven gear (104) being coaxially arranged with the internal thread sleeve (106), the driven gear (104) being meshed with a downward driving rack (11), a screw rod (103) being arranged in the internal thread sleeve (106), the screw rod moving toward the monorail track when the internal thread sleeve (106) and the screw rod rotate relative to each other, the driven plate (101) being provided with a limit assembly to limit the rotation of the screw rod, and a replaceable marking block being provided at the end of the screw rod facing the monorail track, the marking block being a wear color block; The limit assembly comprises a guide cylinder and a guide rod, the guide cylinder is arranged at the lower part of the internal thread sleeve (106) of the driven plate (101), the centers of the internal thread sleeve (106) and the guide cylinder are parallel and face the inner groove direction of the monorail hanging track, a guide rod (102) is arranged in the guide cylinder, the two ends of the screw rod (103) and the two ends of the guide rod are connected by an end plate (105) at the same time, and a marking block is arranged on the end plate close to the monorail hanging track side, and the marking block maintains a spacing with the inner groove of the monorail hanging track, and the spacing is less than the maximum moving distance of the screw rod; A brake assembly is also provided, comprising a connecting rod (15) hingedly connected to the middle of the guide rod (102), the connecting rod (15) and the guide rod forming an acute angle toward the monorail track side, the other end of the connecting rod (15) being hingedly connected to a push rod (12), the other end of the push rod (12) being fixedly connected to an arc-shaped brake plate (14) for rotating the brake roller (3), the roller frame (2) being fixedly connected to a brake frame (13), the push rod (12) being movably arranged to penetrate the brake frame (13), and the connecting rod and the push rod are pushed to move when the guide rod moves toward the monorail track.

2. The monorail ramp track running inertia overload distance measuring device according to claim 1, characterized in that: A counterweight block is provided in the load box (5), and the weight of the counterweight block is adjustable. A switch door (501) is provided at the end of the load box (5) through hinge rotation, and the counterweight is placed in the load box (5) through the switch door.

3. The monorail ramp track running inertia overload distance measuring device according to claim 1 is characterized in that: It also includes a monorail crane, wherein the rear end of the trolley frame (4) is provided with a connecting hook, and a connecting beam is connected to the connecting hook and is connected to the monorail crane.

4. The monorail ramp track running inertia overload distance measuring device according to claim 2 is characterized in that: The load box (5) is a rectangular box with a multi-layer space inside. The metal plate is placed into the load box (5) from the opening and closing door as a counterweight.

5. The monorail ramp track running inertia overload distance measuring device according to claim 1 is characterized in that: There are four groups of roller frames, two of which are arranged side by side on both sides of the monorail hanging track, and each roller frame is provided with two groups of rollers.

6. The monorail ramp track running inertia overload distance measuring device according to claim 1 is characterized by: The worn color blocks are colored chalk blocks.

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