Rail clamp and automatic force-enhancing rail clamp system

Abstract

The present invention discloses a track clamp and an automatic force-enhancing track clamping system, which belong to the technical field of windproofing of large equipment. Aiming at the problem that the windproof device in the prior art has a complex structure and a general windproof effect, the present invention provides a track clamp, which includes a clamping part I and a clamping part II, wherein the clamping part I clamps one side of the track, and the clamping part II clamps the other side of the track, and the clamping part I and the clamping part II are respectively connected to a driving device through a clamp arm, and the clamping surface I is not completely in contact with the side of the track, and the clamping surface II is completely in contact with the other side of the track. While achieving track clamping, it also plays the role of separating the tracks, thereby ensuring the windproofing ability of the equipment on the track; the overall track clamp has a simple structure and is easy to operate; the automatic force-enhancing track clamping system can not only play the role of windproofing, but also can automatically adjust the pressure on the track in time when facing the strengthening of wind force, and the pressure of the two clamping surfaces on the track in the track clamp increases with the increase of wind force, thereby ensuring the windproofing and anti-skid ability and safety performance of the equipment.

Description

Technical Field

[0001] The invention belongs to the technical field of wind protection for large equipment, and more specifically, relates to a rail clamp and an automatic force-enhancing rail clamp system. Background Art

[0002] Large equipment such as gantry cranes and portal cranes are mainly used for outdoor large-scale cargo loading and unloading operations. This type of equipment has high site utilization, a wide operating range, a wide adaptability, and strong versatility. Therefore, it has been widely used in port cargo yards. However, since port cargo yards are open areas, when windy, the ground wind force where these equipment is located is relatively large; the wind protection devices currently equipped mainly include anchoring devices, manual track clamps, manual iron wedges, wind protection cables, etc., which are basically mainly for preventing typhoons. When sudden gusts occur along the track direction, the windward area of ​​large equipment is large and it is very easy to be blown. The existing devices are difficult to implement in time during the movement of large equipment, and cannot play a role in preventing sudden gusts in time, making large equipment susceptible to sliding due to wind force, causing certain safety accidents.

[0003] Corresponding improvements have also been made to the above problems, such as China Patent Application No. CN201910647246.0, published on October 22, 2019. The patent discloses a built-in manual rail clamp and a rail and method equipped with the rail clamp, including a first clamp, a second clamp, a support beam, a double-rotation screw, a first nut and a second nut. The first clamp and the second clamp are symmetrically installed relative to the center line of the support beam, the fixed ends of the two clamps are installed in the support beam, the clamping ends of the two clamps are located outside the support beam, and the inner side of the clamping end is provided with an arc surface that matches the rail, the double-rotation screw passes through the first clamp and the second clamp horizontally, the first nut is fixed on the first clamp, and the second nut is fixed on the second clamp; the first nut and the second nut cooperate with the double-rotation screw. The disadvantage of this patent is that the opening or closing of the two clamps by rotating the double-rotation screw requires a large amount of manual labor and is inefficient.

[0004] Another example is Chinese patent application number CN201520032678.8, which was published on June 10, 2015. This patent discloses a track clamp. It includes a first clamp arm and a second clamp arm. The first clamp arm is provided with a hinge seat inside, and the second clamp arm is provided with a connecting seat corresponding to the hinge seat inside. The hinge seat and the connecting seat are movably connected through a rotating shaft. A return spring is connected between the first clamp arm and the second clamp arm, and a wedge plug is provided between the first clamp arm and the second clamp arm. The fixed bracket is connected to both ends of the rotating shaft. The shortcomings of this patent are: the clamping degree of the track clamp and the track is limited, and the windproof performance is average. Summary of the invention

[0005] 1. Problems to be solved

[0006] In view of the problem that the windproof device in the prior art has a complex structure and a general windproof effect, the present invention provides a track clamp and an automatic force-enhancing track clamping system. The track clamp described in the present invention can play the role of separating the tracks while achieving track clamping, further ensuring the windproof ability of the equipment on the track; the overall track clamp has a simple structure and is easy to operate; the automatic force-enhancing track clamping system described in the present invention can not only play the role of windproof but also automatically adjust the pressure on the track in time when facing the increase of wind force, and the pressure of the two clamps in the track clamp facing the track increases with the increase of wind force, effectively ensuring the windproof and anti-skid ability of the equipment, and further ensuring the safety performance.

[0007] 2. Technical solution

[0008] To solve the above problems, the present invention adopts the following technical solutions.

[0009] A track clamp includes a clamping part I and a clamping part II. The clamping part I clamps one side of the track, and the clamping part II clamps the other side of the track. The clamping part I and the clamping part II are respectively connected to a driving device through a clamp arm. The clamping surface I in the clamping part I contacts one side of the track, the middle of the clamping surface I fits the side of the track, and the two ends of the clamping surface I leave gaps with the side of the track. The clamping surface II in the clamping part II contacts the other side of the track, and the clamping surface II completely fits the other side of the track. The track clamp has different degrees of fit between the two clamping surfaces and the track, so that the pressure on both sides of the track is different, which plays a role in separating the tracks while achieving track clamping, and further ensures the windproof ability of the equipment on the track. The overall track clamp has a simple structure and is easy to operate.

[0010] Furthermore, the clamping surface I is elliptical and the clamping surface II is square, so as to achieve a better effect of fastening the track, and the structure is simple and easy to manufacture.

[0011] Furthermore, the driving device includes an electric push rod, which is hinged to two levers respectively, and the two levers are hinged to two clamp arms in a one-to-one correspondence. A connecting rod is provided between the two clamp arms, and the connecting rod is hinged to the two clamp arms respectively.

[0012] Furthermore, the power arm in the lever is longer than the resistance arm, which can save effort, generate a larger slave force with a smaller active force, and save energy.

[0013] Furthermore, a buffer layer is provided on the surface of the connecting rod in contact with the track. The connecting rod is in contact with the track for a long time and has a certain impact force on the track. The buffer layer effectively reduces the wear between the two and prevents the track from being damaged by the impact of the connecting rod for a long time.

[0014] Furthermore, the outer surface of the clamping part I and the outer surface of the clamping part II are both provided with a jaw seat, and the jaw seat is hinged to the clamp arm.

[0015] Furthermore, both the clamping surface I and the clamping surface II are provided with patterns. The patterns increase the friction between the two clamping surfaces and the rail, making it difficult for the two clamping surfaces and the rail to slide relative to each other, further improving the clamping capacity of the rail.

[0016] Furthermore, the surface of the clamping surface I and the surface of the clamping surface II are both provided with a wear-resistant layer, thereby increasing the service life of the two clamping surfaces and the track, slowing down the wear between the two clamping surfaces and the track, and reducing the maintenance cost.

[0017] Furthermore, proximity switches are provided on both the clamping surface I and the clamping surface II, so that the staff can stop the driving device in time and avoid unnecessary power output of the driving device, which causes waste of resources.

[0018] An automatic force-enhancing rail clamping system comprises at least two rail clamps as described above, wherein the clamping parts I and II in the rail clamps are respectively arranged on both sides of the rail, and the clamping parts I and II in two adjacent rail clamps are arranged staggered on one side of the rail. The system can achieve both rail clamping and rail separation, and the clamping force on the rail increases with the increase of wind force, thereby improving the windproof and anti-skid ability of the equipment on the rail, ensuring the safety of the on-site environment, and having a simple overall structure, and is easy to install and maintain.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] (1) The present invention clamps the two sides of the track by driving the clamp arm so that the clamping surface I and the clamping surface II are respectively in contact with the two sides of the track, thereby preventing the equipment from moving on the track due to excessive wind force. Since the clamping surface I and the clamping surface II exert different pressures on the track due to different degrees of contact with the track, the track clamping and the track separation function are simultaneously played, further ensuring the windproof ability of the equipment on the track; the overall track clamp has a simple structure and is easy to operate. It can realize automatic operation without manual labor, reduce labor costs, and improve the safety performance of the entire process;

[0022] (2) The driving device described in the present invention includes an electric push rod and a lever, the electric push rod is hinged to the lever, and the lever is hinged to the clamp arm in a one-to-one correspondence. The electric push rod drives the lever to move and then drives the clamp arm to move to achieve the clamping effect of the clamping surface I and the clamping surface II on the track, and the length of the power arm in the lever is greater than the length of the resistance arm, so that a smaller main force can be used to generate a larger slave force, that is, the electric push rod outputs a smaller power and can transmit a larger power to the two clamping surfaces through the lever, and then can generate a larger clamping force on the track, thereby reducing the original power output, saving power energy consumption, and effectively saving costs for the enterprise;

[0023] (3) The present invention is provided with a jaw seat on the outer surface of the clamping part I and the clamping part II, which protects the clamping surface I and the clamping surface II, preventing the two clamping surfaces from being easily worn by the external environment; and the jaw seat itself has a certain self-weight and can also strengthen the clamping and fixing effect on the track; the clamping surface I and the clamping surface II are both provided with a proximity switch, and when the clamping surface I and the clamping surface II are respectively clamped with the track, the proximity switch sends a signal to the main controller, and then the operator stops the driving device in time, avoiding unnecessary power waste and saving energy consumption;

[0024] (4) The present invention provides patterns on both the clamping surface I and the clamping surface II. Since the two clamping surfaces are in contact with the rail for a long time, the provision of the patterns effectively increases the friction between the clamping surface and the rail, further ensuring that the clamping surface and the rail are not prone to sliding, thereby improving the clamping effect. At the same time, a wear-resistant layer is provided on the surface of the clamping surface I and the clamping surface II to reduce the wear between the two clamping surfaces and the rail, further improving the service life of the rail clamp, ensuring the stable operation of the entire system, and reducing maintenance costs.

[0025] (5) The clamping parts I and II in the two adjacent rail clamps in the automatic force-enhancing rail clamping system described in the present invention are staggered on one side of the rail. As the wind force increases, the two clamping surfaces II are rotated by the wind, thereby increasing the clamping force on the rail. At the same time, the clamping surface I moves to increase the clamping force on the rail. This system can not only play a windproof role, but also automatically adjust the pressure on the rail in time when the wind force increases. In addition, the pressure of the two clamping surfaces on the rail increases with the increase of wind force, which effectively ensures the windproof and anti-skid ability of the equipment and further ensures the safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 for Figure 1 Middle A direction view;

[0028] Figure 3 This is the force analysis diagram of the rail clamp;

[0029] Figure 4 This is the track force analysis diagram.

[0030] In the figure: 1. driving device; 2. hinge shaft; 3. lever; 4. clamp arm; 5. frame body; 6. clamping surface II; 7. connecting rod; 8. track; 9. clamping surface I; 10. jaw seat; 11. base. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with specific embodiments and drawings.

[0032] Example 1

[0033] like Figure 1 and Figure 2 As shown, a track clamp comprises a clamping part I and a clamping part II, wherein the clamping part I clamps one side of the track 8, and the clamping part II clamps the other side of the track 8, and the clamping part I and the clamping part II are respectively connected to the driving device 1 through the clamp arm 4, and the clamping surface I9 in the clamping part I contacts with one side of the track 8, and the middle part of the clamping surface I9 is ​​in contact with the side of the track 8, and the two ends of the clamping surface I9 are respectively spaced from the side of the track 8, so that the clamping surface I9 as a whole can rotate when the wind force becomes strong and produce a relative direction relative to the track 8. The clamping surface II6 in the clamping part II contacts with the other side of the track 8, and the clamping surface II6 is completely fitted with the other side of the track 8. When the clamping surface II6 contacts with the other side of the track 8, it is fixed; specifically, the outer surface of the clamping part I and the outer surface of the clamping part II are both provided with a jaw seat 10, the jaw seat 10 is hinged to the clamp arm 4, and the clamping surface I9 is ​​hinged to the jaw seat 10 through the hinge shaft 2, and the clamping surface II6 is fixed on the jaw seat 10; the setting of the jaw seat 10 is on the one hand to clamp The holding surface I9 and the clamping surface II6 play a protective role, preventing the two clamping surfaces from being damaged by the interference of the external environment, and effectively improving the service life of the clamping surface I9 and the clamping surface II6; on the other hand, the jaw seat 10 itself has a certain deadweight and can also strengthen the clamping and fixing effect on the track 8; the driving device 1 can be driven by a motor, a hydraulic drive or a cylinder drive; in this embodiment, the clamping surface I9 is ​​elliptical, and the clamping surface II6 is square. The elliptical setting makes the contact surface between the clamping surface I9 and the track 8 arc-shaped. Under the action of wind, the ellipse is easy to rotate around its hinge shaft 2 and has a tendency to open outward relative to the track 8. The structure is simple and easy to manufacture. Other shapes of the clamping surface I9 that can rotate or open outward relative to the side of the track 8 can be used in the present invention; the square clamping surface II6 is easier to fit tightly with the contact surface of the track 8, and the structure is simple and easy to manufacture. Other shapes of the clamping surface II6 that can achieve complete fit with the side of the track 8 can be used in the present invention.

[0034] Specifically, in this embodiment, the driving device 1 includes an electric push rod, which is hinged to two levers 3 respectively. Specifically, the upper end of the electric push rod is hinged to the base 11 through a hinge shaft 2, the base 11 is arranged on the frame body 5, and the lower end of the electric push rod is hinged to the lever 3 through the hinge shaft 2; the two levers 3 are hinged to the two clamp arms 4 one by one, and a connecting rod 7 is arranged between the two clamp arms 4, and the connecting rod 7 is hinged to the two clamp arms 4 respectively; and preferably, the length of the power arm in the lever 3 is greater than the length of the resistance arm; this embodiment adopts the electric push rod and the lever 3 to be hinged The power transmission is carried out in a combined manner, and the lever 3 is designed so that the length of the power arm in the lever 3 is greater than the length of the resistance arm, so that a smaller main force can be used to generate a larger slave force, that is, the electric push rod outputs a smaller power and can transmit a larger power to the clamp arm 4 through the lever 3, and then transmit the larger power to the clamping part I and the clamping part II through the clamp arm 4, and the clamping surface I9 on the clamping part I and the clamping surface II6 on the clamping part II can then generate a larger clamping force on the track 8; effectively reducing the output of power energy, saving energy consumption, and reducing costs for the enterprise. Furthermore, a buffer layer is provided on the surface where the connecting rod 7 contacts the track 8, and the buffer layer is a coating made of rubber or a buffer material. Because the connecting rod 7 and the track 8 will be in contact for a long time, the setting of the buffer layer effectively slows down the wear between the connecting rod 7 and the track 8. Because the connecting rod 7 has a certain speed when in contact with the track 8, it is easy to damage the track 8. The setting of the wear-resistant layer effectively slows down the wear between the two, improves the service life of the two, and reduces the maintenance cost of the entire system.

[0035] The working principle of the track clamp described in this embodiment is as follows: when wind protection is required, the electric push rod works to push the two levers 3 downward, and the two levers 3 push the two clamp arms 4 respectively. When the lower end of the connecting rod 7 between the two clamp arms 4 contacts the top surface of the track 8, the electric push rod continues to push downward, because the connecting rod 7 is respectively hinged to the two clamp arms 4 through the hinge shaft 2. At this time, the clamp arms 4 rotate around the hinge shaft 2, pushing the two jaw seats 10 to move toward the track 8, so that the clamping surface II6 and the clamping surface I9 move toward the track 8 to clamp the track 8, and the electric push rod no longer works at this time; when the wind protection needs to be released, the electric push rod pushes the lever 3 upward, and under the action of the lever 3, the two clamping parts are loosened. When the clamping part is loosened to the maximum, the electric push rod continues to work to lift the entire clamping part upward, leaving the track 8, and releasing the wind protection.

[0036] The present invention drives the clamp arm 4 to make the clamping surface II6 and the clamping surface I9 contact the two sides of the track 8 respectively to achieve clamping of the two sides of the track 8, thereby preventing the equipment from moving on the track due to excessive wind force. Since the two clamping surfaces in the track clamp have different degrees of fit to the track 8, and then the pressures on the track 8 are different, the track 8 can be clamped and the track can be separated at the same time, further ensuring the windproof ability of the equipment on the track; the overall track clamp has a simple structure and is easy to operate. It can realize automatic operation without manual labor, reduce labor costs, and improve the safety performance of the entire process.

[0037] Example 2

[0038] Basically the same as Example 1, preferably, both the clamping surface II6 and the clamping surface I9 are provided with proximity switches, and when the clamping surface II6 and the clamping surface I9 are in contact with and clamped with the track 8, the proximity switch generates a signal to the main controller, which is arranged in the control room. The operator can know that the clamping surface II6 and the clamping surface I9 are respectively clamped with the track 8 by observing the main controller, and the driving device 1 stops working at this time, so as to avoid unnecessary power output caused by the driving device 1 continuing to work when the two clamping parts have been clamped with the track 8, thereby saving energy consumption and improving the timeliness of the whole process; more specifically, both the clamping surface I9 and the clamping surface II6 are provided with patterns, and the patterns increase the friction between the clamping surface I9 and the clamping surface II6 and the track 8 respectively, so that the clamping surface I9 and the clamping surface II6 and the track 8 are not easy to slide relative to each other, thereby increasing the clamping effect on the track 8. Furthermore, in the present embodiment, the surfaces of the clamping surface I9 and the surfaces of the clamping surface II6 are both provided with a wear-resistant layer, and the wear-resistant layer is a coating formed by evenly applying a coating made of wear-resistant material on the surfaces of the clamping surface I9 and the clamping surface II6. Since the clamping surface I9 and the clamping surface II6 are in contact and friction with the track 8 for a long time, they are prone to wear between the track 8. The provision of the wear-resistant layer effectively solves this problem, and can reduce the wear between the clamping surface I9 and the clamping surface II6 and the track 8, reduce the number of maintenance and costs, and increase the service life of the entire track clamp.

[0039] Example 3

[0040] An automatic force-enhancing rail clamping system, comprising at least two rail clamps as described in any one of the above embodiments 1-2, wherein the clamping parts I and II in the rail clamps are respectively arranged on both sides of the rail 8, and the clamping parts I and II in the two adjacent rail clamps are staggered on one side of the rail 8, specifically, the clamping parts of the adjacent rail clamps on the same side of the rail 8 that contact the rail 8 are inconsistent, so as to Figure 2For example, the left side of the track 8 is a clamping surface I9 in one track clamp and a clamping surface II 6 in another track clamp, and the right side of the track 8 is a clamping surface II 6 in one track clamp and a clamping surface I9 in another track clamp; in this embodiment, the number of the track clamps is two.

[0041] The reason why the clamping parts I and II of the two adjacent rail clamps are staggered on one side of the rail 8 is to enable the automatic force-enhancing double-clamp rail clamping system to automatically increase the clamping force on the rail 8 when the equipment on the rail 8 moves as the wind force increases, thereby ensuring the fixed windproof effect of the equipment and improving the safety performance of the entire on-site environment. The specific description of the automatic force-enhancing system is as follows: Figure 3 and Figure 4 As shown in the figure, when the automatic force-enhancing double clamp rail system is subjected to thrust F 2 That is, after the tongs arm 4 generates a thrust on the jaw seat 10 around the hinge shaft 2, since the tongs arm 4 and the jaw seat 10 are hinged through the hinge shaft 2, the tongs arm 4 of the clamping surface I9 and the tongs arm 4 of the clamping surface II6 are connected by the hinge shaft 2 at the thrust F. 2 The jaw seat 10 is pushed to move toward the track 8 under the action of, when the clamping surface II6 and the clamping surface I9 contact the track 8, the pressing force of the track 8 on the clamping surface II6 is F 1 The clamping force generated by the track 8 on the clamping surface I9 is ​​F 3 When the wind force gradually increases, the device fixed on the track 8 moves. When the device moves, the clamping surface I9 is ​​hinged to the jaw seat 10 through the hinge shaft 2, so the clamping surface I9 rotates around the hinge shaft 2. 3 Under the action of, the jaw seat 10 hinged to the clamping surface I9 is ​​pushed to have a tendency to open outward or directly open outward. 3 Increase; at the same time in F 3 Under the action of the forceps, since the jaw seat 10 is hinged to the jaw arm 4 through the hinge shaft 2, the jaw seat 10 tends to rotate around the hinge shaft 2 or directly rotates, and elastic deformation occurs, so that the clamping surface II6 further presses the track 8. At this time, F 1 Increase; and F 1 and F 3 It changes with the wind speed. The stronger the wind speed, the greater the moving distance of the device. 1 and F 3 The greater the pressure F of the clamping surface II6 on the track 8 1 ' and the clamping force F of the track 8 on the clamping surface I 9 3 'With F 1 and F 3 The forces act and react on each other, so F 1 'Equal to F 1 , F 3 'Equal to F3 , so the clamping force on the track 8 increases with the increase of wind force; and at the same time, due to the inconsistent shapes of the clamping surface I6 and the clamping surface II9, the clamping force generated on the track 8 is also inconsistent, which makes the track 8 have a tendency to bend on the stressed section, which plays a role of separating the tracks, further improving the windproof ability of the equipment. The clamping part I and the clamping part II in the two adjacent track clamps in the automatic force-enhancing track clamping system of the present invention are staggered on one side of the track 8. As the wind force increases, the two clamping surfaces I9 are rotated by the wind force, so that the clamping force on the track 8 increases, and at the same time, the clamping force on the track 8 increases due to the movement of the clamping surface II6; this system can not only play a role in windproofing, but also automatically adjust the pressure on the track in time when facing the strengthening of wind force, and the pressure of the two clamping surfaces on the track 8 increases with the increase of wind force, which effectively ensures the windproof and anti-skid ability of the equipment, and further ensures the safety performance.

[0042] The examples described in the present invention are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by engineers and technicians in this field should all fall within the protection scope of the present invention.

Claims

1. A rail clamp, characterized in that: The invention comprises a clamping part I and a clamping part II, wherein the clamping part I clamps one side of the track (8), and the clamping part II clamps the other side of the track (8), and the clamping part I and the clamping part II are respectively connected to the driving device (1) through a clamp arm (4), a clamping surface I (9) in the clamping part I contacts one side of the track (8), the middle of the clamping surface I (9) is in contact with the side of the track (8), and both ends of the clamping surface I (9) respectively leave gaps with the side of the track (8), so that the clamping surface I (9) can rotate and have a tendency to expand outward relative to the track (8); The clamping surface II (6) in the clamping portion II contacts the other side surface of the track (8), and the clamping surface II (6) is completely in contact with the other side surface of the track (8); and the clamping surface II (6) and the clamping surface I (9) exert different pressures on the track (8), thereby playing the role of separating the tracks.

2. A rail clamp according to claim 1, characterized in that: The clamping surface I (9) is elliptical, and the clamping surface II (6) is square.

3. A rail clamp according to claim 1, characterized in that: The driving device (1) comprises an electric push rod, which is respectively hinged to two levers (3), the two levers (3) are hinged to two clamp arms (4) in a one-to-one correspondence, a connecting rod (7) is provided between the two clamp arms (4), and the connecting rod (7) is respectively hinged to the two clamp arms (4).

4. A rail clamp according to claim 3, characterized in that: The length of the power arm in the lever (3) is greater than the length of the resistance arm.

5. A rail clamp according to claim 3 or 4, characterized in that: A buffer layer is provided on the surface of the connecting rod (7) that contacts the track (8).

6. The rail clamp according to claim 1, characterized in that: The outer surfaces of the clamping part I and the outer surfaces of the clamping part II are both provided with a jaw seat (10), and the jaw seat (10) is hinged to the clamp arm (4).

7. A rail clamp according to claim 6, characterized in that: The clamping surface I (9) and the clamping surface II (6) are both provided with patterns.

8. A rail clamp according to claim 1 or 7, characterized in that: The surface of the clamping surface I (9) and the surface of the clamping surface II (6) are both provided with a wear-resistant layer.

9. A rail clamp according to claim 8, characterized in that: Proximity switches are provided on both the clamping surface I (9) and the clamping surface II (6).

10. An automatic force-enhancing rail clamping system, characterized in that: The invention comprises at least two rail clamps according to any one of claims 1 to 9, wherein the clamping parts I and II in the rail clamps are respectively arranged on both sides of the rail (8), and the clamping parts I and II in two adjacent rail clamps are arranged in a staggered manner on one side of the rail (8).

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