Roller device and self-counterweight trolley

Abstract

The invention belongs to the technical field of small rail cars, and particularly relates to a roller device which comprises a frame body, two swing frames are hinged to the frame body, wheels are arranged between the swing frames, each swing frame comprises a mounting plate and a supporting plate, the mounting plates are hinged to the frame body, the supporting plates are fixed to one sides of the mounting plates, and two guide rods are arranged between the supporting plates and the frame body. The other end of the guide rod extends out of the frame body and is provided with a limiting piece; the guide rod is sequentially sleeved with a limiting block, a spring and a limiting seal head, and the spring is arranged between the limiting block and the limiting seal head; the frame body is provided with a limiting groove which corresponds to the limiting end socket and is matched with the arc face of the outer side of the limiting end socket. The self-counterweight trolley comprises a trolley body and the roller devices, the multiple roller devices are fixedly installed on the trolley body, and the self-counterweight trolley is installed in the counterweight #-shaped frame. Buffering is provided through the spring when the self-balance weight trolley moves up and down and suddenly stops, and the trolley structure is protected.

Description

Technical Field

[0001] The invention belongs to the technical field of rail trolleys, and in particular relates to a roller device and a self-balanced trolley. Background Art

[0002] During the use of large machinery such as quay cranes, the lifting counterweight trolley moves up and down along the counterweight cross frame when in use. The stroke is long, and the counterweight is suspended below it. The overall weight is large. Usually, multiple rollers are installed on the car body to correspond to the track. The straightness of the track is required to be high during the movement. The trolley moves up and down on the vertical cross track frame, which requires high self-adjustment of the trolley. The current trolley directly installs a trolley wheel frame and rollers on the car body. There will be an emergency stop state during high-speed driving. At this time, the trolley is subjected to large and unbalanced force, which is easy to cause the corresponding tilt of the trolley wheel frame, and the rollers are easily deformed or damaged under the force, making the trolley driving unstable, affecting subsequent work. Summary of the invention

[0003] The present invention aims to solve the problem that the existing lifting counterweight trolley makes up and down reciprocating motion on a vertical tic-tac-toe track frame, has a long stroke and heavy weight, and has high requirements for the self-adjustment of the trolley. The current trolley directly installs a trolley wheel frame and rollers on the vehicle body, and may have an emergency stop during high-speed driving. At this time, the trolley is subjected to a large and unbalanced force, which easily causes the trolley wheel frame to tilt accordingly, and the roller is easily deformed or damaged by the force, making the trolley driving unsteady. A roller device and a self-counterweight trolley are provided. When passing through, the wheel is hingedly arranged with a swing frame to provide a layer of buffer during emergency stop, and a secondary buffer is provided by a spring, so that the trolley has excellent self-adjustment performance and effectively reduces the problem of damage and deformation caused by uneven force on the trolley wheel frame and the wheel.

[0004] In order to achieve the above object, the technical solution of the present invention is: A roller device comprises a frame, on which two swing frames are hinged, a wheel is arranged between the two swing frames, each of the swing frames comprises a mounting plate and a support plate, the two mounting plates are hinged to the frame, the swing frame swings around the hinge point between the mounting plate and the frame, a support plate is fixedly arranged on the side away from the two mounting plates, two guide rods arranged vertically are arranged between each support plate and the frame, one end of the guide rod is fixedly connected to the corresponding support plate, and the other end extends out of the frame to be provided with a limit piece, the swing stroke of the swing frame is guaranteed by the limit piece, the swing frame is hinged, and swings when the roller device turns to provide buffering.

[0005] The guide rods are sequentially sleeved with a limit block, a spring and a limit head, the limit block is fixed to one end of the guide rod close to the support plate, a spring is arranged between the limit block and the limit head, one side of the limit head located above is fixedly connected to a cylinder, and the cylinder is sleeved on the outside of the corresponding limit block and the spring; a limit groove corresponding to the limit head and matching the arc surface of the outer side of the limit head is opened on the frame body, a buffer is provided for the wheel in an emergency stop state through the spring, the travel limit of the swing frame and the wheel when tilted up is guaranteed by the cylinder body and the limit head, and the fit of the limit head and the frame body at different angles is guaranteed by the limit groove.

[0006] Preferably, the frame body includes a base plate and two upright frames, the two upright frames are fixedly arranged on the base plate, two mounting plates are hingedly arranged between the two upright frames, two guide rods are arranged between each upright frame and the corresponding support plate, and the mounting plates and guide rods are installed through the upright frames.

[0007] Preferably, each of the vertical frames is provided with two upper and lower corresponding waist-shaped holes, and the end of the guide rod passes through the corresponding waist-shaped holes to connect to the limit piece. When the swing frame rotates around the hinge position, the waist-shaped holes ensure the angle and position change space of the guide rod.

[0008] Preferably, the limiting member located at the top is a downward limit nut, which is threadedly connected to the corresponding guide rod, and the limiting member located at the bottom is a downward limit block, and the side of the downward limit block close to the guide rod is set as an inclined surface and fixedly connected to the guide rod, and the downward stroke limit is ensured by the limiting member when the swing frame and the wheel swing.

[0009] Preferably, one end of the guide rod passes through the corresponding support plate and is threadedly connected with a clamping block, and the guide rod is fixedly installed by cooperating with the clamping block and the limiting block.

[0010] Preferably, a connecting column penetrates the end of the guide rod in its radial direction, and the end of the connecting column penetrates the side wall of the corresponding block. The connecting column prevents the guide rod and the connecting column from rotating relative to each other, causing the guide rod to be loosely installed.

[0011] Preferably, the limit block is threadedly connected to the corresponding guide rod, and the limit block can be adjusted to move axially along the guide rod to further adjust the spring force.

[0012] Preferably, a plurality of reinforcing plates are fixedly connected between the support plate and the corresponding mounting plate to ensure the structural strength of the swing frame.

[0013] A self-balanced weight trolley comprises a vehicle body and the above-mentioned roller device, wherein a plurality of the roller devices are fixedly mounted on the vehicle body through a bottom plate, and the self-balanced weight trolley is mounted in a counterweight tic-tac-toe frame, and the self-balanced weight trolley moves up and down in the counterweight tic-tac-toe frame.

[0014] Preferably, a plurality of tracks are arranged in the circumferential direction of the inner side of the counterweight cross frame, and the plurality of tracks correspond to and match the plurality of wheels respectively, so that the self-counterweight trolley can move up and down through the cooperation between the wheels and the tracks.

[0015] Through the above technical solution, the beneficial effects of the present invention are: 1. The present invention installs the wheel between two swing frames and hinges the swing frame on the frame body, so that during the driving of the self-balanced weight trolley, the swing frame is driven to swing and the angle changes. At the same time, the spring between the support plate of the swing frame and the vertical frame expands and contracts accordingly. When the self-balanced weight trolley stops suddenly, the unbalanced force received by the wheel is reduced by the buffering of the spring, thereby reducing the impact on the wheel frame and the wheel structure, reducing or even avoiding the damage of the self-balanced weight trolley. At the same time, the swing frame and the spring that are hingedly arranged cooperate to ensure the buffering of the force on the wheel during driving, effectively extending the service life of the roller device and the self-balanced weight trolley.

[0016] 2. The present invention realizes the fixed connection between the guide rod and the corresponding support plate through the cooperation of the limit block and the clamping block, and at the same time avoids the relative rotation of the guide rod and the clamping block through the connecting column, effectively avoiding the tight connection between the guide rod and the corresponding support plate, thereby ensuring the synchronous swing of the guide rod and the swing frame.

[0017] 3. The present invention provides a limiter so that when the swing frame drives the wheel to swing downward, the guide rod and the stand frame move relative to each other. When the limiter contacts the stand frame, the wheel reaches the limit of its travel. When the swing frame drives the wheel to swing upward, the guide rod and the vertical frame move relative to each other. When the spring located at the top is compressed and the end of the cylinder contacts the corresponding support plate, the wheel reaches the limit of its travel upward. Furthermore, by limiting the pitch and tilt of the wheel, it is effectively avoided that if the wheel swings too far, the mounting frame and other components will interfere with the track or the wheel will come off the track. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of the three-dimensional structure of a roller device of the present invention.

[0019] Figure 2 The figure is a schematic top view of the structure of a roller device of the present invention.

[0020] Figure 3 The figure is a schematic side structural diagram of a roller device of the present invention.

[0021] Figure 4 The figure is a schematic diagram of the rear structure of a roller device of the present invention.

[0022] Figure 5 For the present invention Figure 1 A schematic cross-sectional structural diagram of a roller device.

[0023] Figure 6 For the present invention Figure 3 A schematic cross-sectional structural diagram of a roller device.

[0024] Figure 7 The present invention is a schematic structural diagram of a roller device when a roller swings downward during travel.

[0025] Figure 8 The present invention is a structural schematic diagram of a roller device when a roller swings upward during travel.

[0026] Fig. 9 A schematic diagram of the structure of a stand of a roller device of the present invention Figure 1 .

[0027] Fig.10 A schematic diagram of the structure of a stand of a roller device of the present invention Figure 2 .

[0028] Fig.11 The present invention is a schematic structural diagram of a swing frame of a roller device.

[0029] Fig.12 The structure of the upper limit rod of a roller device of the present invention is shown in FIG. Figure 1 .

[0030] Fig.13 The structure of the upper limit rod of a roller device of the present invention is shown in FIG. Figure 2 .

[0031] Fig.14 The structure of the limit rod located at the bottom of a roller device of the present invention is shown in FIG. Figure 1 .

[0032] Fig.15 The structure of the limit rod located at the bottom of a roller device of the present invention is shown in FIG. Figure 2 .

[0033] Fig.16 The present invention is a structural schematic diagram of a self-weighted trolley installed in a weighted cross frame.

[0034] The numbers in the accompanying drawings are: 1 is a wheel, 2 is a mounting plate, 3 is a support plate, 4 is a guide rod, 5 is a limit block, 6 is a spring, 7 is a limit head, 8 is a limit groove, 9 is a bottom plate, 10 is a stand, 11 is a waist-shaped hole, 12 is a cylinder, 13 is a block, 14 is a connecting column, 15 is a reinforcing plate, 16 is a car body, 17 is a counterweight cross frame, and 18 is a track. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments: like Figures 1 to 16 As shown, this embodiment provides a roller device, including a frame body, the frame body includes a bottom plate 9 and two upright frames 10, the two upright frames 10 are fixedly arranged on the bottom plate 9, each of the upright frames 10 includes a vertical plate and two vertical plates, two parallel vertical plates are fixedly arranged on one side of the vertical plate, each of the upright frames 10 is provided with two upper and lower corresponding waist-shaped holes 11, the waist-shaped holes 11 are located on the corresponding vertical plates, two mounting blocks are fixedly arranged on the side of the vertical plate away from the vertical plate, and the mounting blocks are provided with through holes corresponding to the waist-shaped holes 11.

[0036] Two swing frames are hinged on the frame body, and a wheel 1 is arranged between the two swing frames. Each of the swing frames includes a mounting plate 2 and a support plate 3. The wheel 1 is installed between the two mounting plates 2. The two mounting plates 2 are hinged to the frame body. The swing frame swings around the hinge point between the mounting plate 2 and the frame body. Two mounting plates 2 are hinged between the two vertical frames 10. A hinge shaft is arranged between the vertical plates of the two vertical frames 10. The mounting plates 2 are installed through the hinge shaft. When the wheel 1 moves along the track 18, the swing frame and the wheel 1 rotate around the hinge shaft. The support plates 3 are fixedly arranged on the side away from the two mounting plates 2. A plurality of reinforcing plates 15 are fixedly connected between the support plate 3 and the corresponding mounting plate 2. The support plate 3 is located at one end of the corresponding mounting plate 2 away from the stand 10. Two guide rods 4 arranged vertically are arranged between each support plate 3 and the frame body. Two guide rods 4 are arranged between each stand 10 and the corresponding support plate 3. The guide rod 4 is located between the corresponding support plate 3 and the stand 10. One end of the guide rod 4 is fixedly connected to the corresponding support plate 3 and the other end extends out of the frame body to be provided with a limiting member. The swinging stroke of the swing frame is ensured by the limiting member. The end of the guide rod 4 passes through the corresponding waist-shaped hole 11 to connect with the limiting member.

[0037] like Figure 5-6 As shown, the guide rod 4 is sequentially sleeved with a limit block 5, a spring 6 and a limit head 7, the limit block 5 is threadedly connected to the corresponding guide rod 4, the limit head 7 is fixedly connected to the corresponding guide rod 4, the limit block 5 is fixed to one end of the guide rod 4 close to the support plate 3, one end of the guide rod 4 passes through the corresponding support plate 3 and is threadedly connected with a clamping block 13, the limit block 5 and the clamping block 13 are respectively located on both sides of the corresponding support plate 3, thereby realizing a fixed connection between the guide rod 4 and the corresponding support plate 3, the end of the guide rod 4 is penetrated by a connecting column 14 along its radial direction, the end of the connecting column 14 passes through the side wall of the corresponding clamping block 13, and the connecting column 14 is used to prevent the clamping block 13 and the guide rod 4 from rotating relative to each other, resulting in the block 13 and the corresponding limit block 5 being unable to limit and fix the guide rod 4 along the axial direction.

[0038] As an implementable embodiment, the connecting column 14 passes through the side wall of the block 13 and is threadedly connected to the guide rod 4 to prevent relative rotation between the guide rod 4 and the block 13, thereby ensuring that the guide rod 4 and the support plate 3 are installed stably and firmly.

[0039] The frame is provided with a limiting groove 8 corresponding to the limiting head 7 and matching the outer arc surface of the limiting head 7. The mounting block is provided with a limiting groove 8 at one end close to the support plate 3. The limiting groove is connected to the through hole. The end of the guide rod 4 passes through the limiting groove 8, the through hole and the waist-shaped hole 11 and is connected to the limiting piece. The outer arc surface of the limiting head 7 fits the corresponding limiting groove 8.

[0040] The limiting member located at the top is a downward limiting nut, which is threadedly connected to the corresponding guide rod 4. The limiting member located at the bottom is a downward limiting block, and the side of the downward limiting block close to the guide rod 4 is set as an inclined surface and fixedly connected to the guide rod 4.

[0041] As an implementation method, a slope is also provided on the side of the downward limit nut close to the vertical plate, and when the slope on the limit block is tightly fitted against the side of the vertical plate, the slope on the downward limit nut also fits tightly against the side of the corresponding vertical plate.

[0042] As an implementable embodiment, the connecting column 14 may also adopt a pin structure to achieve the limiting between the clamping block 13 and the corresponding guide rod 4 to prevent the clamping block 13 and the corresponding guide rod 4 from rotating relative to each other.

[0043] A spring 6 is arranged between the limit block 5 and the limit head 7. When the wheel 1 moves along the track 18, the mounting frame and the wheel 1 swing, the spring 6 is compressed or reset and extended, and one side of the limit head 7 located above is fixedly connected to the cylinder 12, and the cylinder 12 is sleeved on the outer side of the corresponding limit block 5 and the spring 6. Figure 7 As shown, when the wheel 1 moves upward along the track 18, the mounting frame and the wheel 1 swing downward until the inclined surface of the downward limit block contacts the side of the vertical plate of the vertical frame 10. At this time, the downward limit nut located above also contacts the corresponding vertical plate, reaching the downward swing stroke limit of the wheel 1. At this time, the leftmost side of the wheel 1 moves 15mm toward the vertical frame 10 compared to the horizontal state without swinging, and the downward swing angle is about 4°. The spring 6 located below is compressed to provide a buffer for the wheel 1 and the mounting frame, etc., to ensure that they will not receive excessive rigid impact even in the emergency stop state. During this process, the outer arc surface of the limit head 7 located below changes angle, but always keeps in contact with the side wall of the corresponding limit groove 8 located below; as shown in FIG. Figure 8As shown, when the wheel 1 moves downward along the track 18, the mounting frame and the wheel 1 swing upward until one end of the cylinder 12 away from the corresponding limit head 7 touches the side of the corresponding support plate 3 and reaches the upward travel limit 1 of the wheel 1. At this time, the leftmost position of the wheel 1 moves 23 mm toward the vertical frame 10 compared to the horizontal state without swinging, and the upward swing angle is about 8°. At this time, the upper limit blocks 5 are all located in the corresponding cylinder 12, and the upper spring 6 is compressed to provide buffer protection for the wheel 1 and the mounting frame, ensuring that they will not receive excessive rigid impact even in the emergency stop state. During this process, the relative angle between the limit head 7 and the corresponding limit groove 8 changes, but the outer arc surface of the limit head 7 always keeps in contact with the side wall of the corresponding limit groove 8.

[0044] As an implementable method, the pitch limit nut is rotated to adjust the distance between the nut and the corresponding vertical plate, so as to adjust the pitch stroke of the wheel 1 and the mounting frame.

[0045] A self-ballasted trolley comprises a vehicle body 16 and the above-mentioned roller device, wherein a plurality of the above-mentioned roller devices are fixedly mounted on the vehicle body 16 through a bottom plate 9. Fig.13 As shown, the upper and lower sides of the vehicle body 16 are respectively provided with 6 corresponding roller devices, that is, each vehicle body 16 is installed with 12 roller devices, and every two corresponding wheels 1 correspond to the same track 18. The self-balanced weight trolley is installed in a counterweight tic-tac-toe frame 17, and a plurality of tracks 18 are circumferentially arranged on the inner side of the counterweight tic-tac-toe frame 17. The plurality of tracks 18 correspond to and match the plurality of wheels 1, respectively. The self-balanced weight trolley moves up and down along the counterweight tic-tac-toe frame 17 through the cooperation between the wheels 1 and the corresponding tracks 18.

[0046] When the quay crane needs to adjust the counterweight during use, the counterweight object is hoisted by the counterweight trolley and moved up and down in the counterweight cross frame 17 to achieve balance at both ends of the quay crane.

[0047] When the self-ballasted trolley moves upward, the mounting frame of the multiple roller devices and the wheel 1 swing downward until the inclined surface of the downward limit block abuts against the side of the vertical plate of the vertical frame 10. At this time, the downward limit nut located above also abuts against the corresponding vertical plate, reaching the downward swing stroke limit of the wheel 1. At this time, the leftmost side of the wheel 1 moves 15mm toward the vertical frame 10 compared to the horizontal state without swinging, and the downward swing angle is about 4°. The spring 6 located below is compressed to provide buffering for the wheel 1 and the mounting frame, etc., to ensure that they will not receive excessive rigid impact even in an emergency stop state.

[0048] When the self-ballasted trolley moves downward, the mounting frame of the multiple roller devices and the wheel 1 swing upward until the end of the cylinder 12 away from the corresponding limit head 7 touches the side of the corresponding support plate 3 and reaches the upward travel limit 1 of the wheel 1. At this time, the leftmost position of the wheel 1 moves 23 mm toward the vertical frame 10 compared to the horizontal state without swinging, and the upward swing angle is about 8°. At this time, the limit blocks 5 located above are all located in the corresponding cylinder 12, and the spring 6 above is compressed, providing buffer protection for the wheel 1 and the mounting frame, ensuring that they will not receive excessive rigid impact even in an emergency stop state.

[0049] It should be noted that in actual use, the swing of the mounting frame and the wheel 1 usually does not reach the limit of its downward and upward travel. The roller device can adaptively adjust to different forces in different directions during the up and down movement of the self-balanced trolley only by the elastic force of the spring 6.

[0050] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structures, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A roller device, characterized in that: It comprises a frame body, on which two swing frames are hingedly connected, a wheel (1) is arranged between the two swing frames, each of the swing frames comprises a mounting plate (2) and a support plate (3), the two mounting plates (2) are hingedly connected to the frame body, the swing frame swings around the hinge point between the mounting plate (2) and the frame body, a support plate (3) is fixedly arranged on the side away from the two mounting plates (2), and two guide rods (4) arranged vertically are arranged between each support plate (3) and the frame body, one end of the guide rod (4) is fixedly connected to the corresponding support plate (3), and the other end protrudes from the frame body to be provided with a limit piece, and the swing stroke of the swing frame is ensured by the limit piece; The guide rod (4) is sleeved with a limit block (5), a spring (6) and a limit head (7) in sequence, the limit block (5) is fixed to one end of the guide rod (4) close to the support plate (3), a spring (6) is arranged between the limit block (5) and the limit head (7), and one side of the limit head (7) located at the top is fixedly connected to a cylinder (12), and the cylinder (12) is sleeved on the outside of the corresponding limit block (5) and the spring (6); The frame body is provided with a limiting groove (8) which corresponds to the limiting seal head (7) and matches the outer arc surface of the limiting seal head (7).

2. A roller device according to claim 1, characterized in that: The frame body comprises a bottom plate (9) and two vertical frames (10), the two vertical frames (10) are fixedly arranged on the bottom plate (9), two mounting plates (2) are hingedly arranged between the two vertical frames (10), and two guide rods (4) are arranged between each vertical frame (10) and the corresponding support plate (3).

3. A roller device according to claim 2, characterized in that: Each of the upright frames (10) is provided with two upper and lower corresponding waist-shaped holes (11), and the ends of the guide rods (4) pass through the corresponding waist-shaped holes (11) to connect with the limiting member.

4. A roller device according to claim 1, characterized in that: The upper limiting member is a downward limiting nut, which is threadedly connected to the corresponding guide rod (4); the lower limiting member is a downward limiting block, and the side of the downward limiting block close to the guide rod (4) is arranged as an inclined surface and is fixedly connected to the guide rod (4).

5. A roller device according to claim 1, characterized in that: One end of the guide rod (4) passes through the corresponding support plate (3) and is then threadedly connected to a clamping block (13).

6. A roller device according to claim 5, characterized in that: A connecting column (14) penetrates the end of the guide rod (4) in its radial direction, and the end of the connecting column (14) penetrates the side wall of the corresponding clamping block (13).

7. A roller device according to claim 1, characterized in that: The limit block (5) is threadedly connected to the corresponding guide rod (4).

8. A roller device according to claim 1, characterized in that: A plurality of reinforcing plates (15) are fixedly connected between the support plate (3) and the corresponding mounting plate (2).

9. A self-ballasted trolley, characterized in that: It comprises a vehicle body (16) and a roller device according to any one of claims 1 to 7, wherein a plurality of the roller devices are fixedly mounted on the vehicle body (16) via a bottom plate (9), and the self-balanced trolley is mounted in a counterweight crisscross frame (17).

10. A self-ballasted trolley according to claim 9, characterized in that: A plurality of tracks (18) are arranged in a circumferential direction on the inner side of the counterweight cross frame (17), and the plurality of tracks (18) correspond to and match the plurality of wheels (1) respectively.

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