Locking beam labor-saving throwing and retracting device and gate locking system

Abstract

The present application relates to the field of gate locking beams and technology, and in particular to a locking beam labor-saving throw-in and throw-out device and a gate locking system, including a door frame spanning across the two sides of the locking beam, a handle rotatably arranged above the door frame, a threaded rod inserted in the handle, and two pulley blocks for clamping on both sides of the web of the locking beam and resting under the upper wing plate of the locking beam, the threaded rod is connected to the pulley block, the handle and the threaded rod are threadedly matched, and the threaded rod and the pulley block are driven to move up and down by the rotation of the handle. With such an arrangement, the locking beam is lifted off the ground to the slide rail by the labor-saving principle of spiral lifting and pulley rolling, so as to achieve easy throw-in and throw-out; the structure has low cost, high reliability, low later maintenance cost, simple structure, convenient operation, labor saving and money saving.

Description

Technical Field

[0001] The present application relates to the technical field of locking beams, and more specifically, to a locking beam labor-saving throwing and retracting device and a gate locking system. Background Art

[0002] The locking beam is used to lock the gate, that is, to fix the gate at a specified opening position to relieve the load of the gate hoist or remove the gate hoist. At present, the locking beam of the water conservancy project weighs 257kg. Some of the traditional locking beam automatic retraction devices are hydraulic or electrical systems, which have complex structures, high maintenance costs, and are prone to failure.

[0003] The traditional manual throwing and retraction of the locking beam is to move the locking beam by manpower. During the opening and closing process of the gate, in order not to hinder its rise and fall, it is necessary to manually lift the locking beam to complete the movement of the locking beam, so that it leaves and enters the load-bearing position above the gate slot opening, thereby realizing its throwing and retraction function. Due to the obstruction of the concrete frame columns on the left and right rear sides, the locking beam cannot move laterally and can only move in the upstream and downstream directions. Each time the locking beam is thrown and retracted, 6 people are required to move it one by one, throwing and retracting it from one side. At the same time, in order to prevent the locking beam from falling into the gate well during the throwing and retraction process, it is necessary to temporarily use a wire rope to fix the locking beam. Due to the structure, the locking beam cannot be thrown and retracted to the left and right sides separately like conventional types of locking beams. In addition, each locking beam weighs about 260 kilograms, has a simple structure, and limited tools can be used. Each throwing and retraction work requires at least 6 people to carry it, and it takes a long time. Affected by the environmental layout, when the locking beam is being put in and out, the guardrails on both sides of the upstream and downstream of the gate shaft need to be removed and the locking beam can only move perpendicular to the direction of the gate leaf. When the staff lifts the locking beam, they are close to the orifice position and the space is small. It is difficult to have complete safety protection measures. If they are not careful, the locking beam and personnel may fall into the gate shaft, leading to serious accidents.

[0004] Therefore, how to solve the problem that the locking beam retraction device has a complex structure, high maintenance cost, high manpower investment, low efficiency and poor operational safety during the opening and closing process of the steel gate of a water conservancy project is a key technical problem that technical personnel in this field need to solve. Summary of the invention

[0005] In order to overcome the problems existing in the related art at least to a certain extent, the purpose of this application is to provide a locking beam labor-saving throwing and retracting device and a gate locking system, which can solve the problems of the locking beam throwing and retracting device having a complex structure, high maintenance cost, high manpower input, low efficiency and poor operational safety during the opening and closing process of the steel gate of a water conservancy project. The many technical effects that can be produced by the preferred technical solution among the many technical solutions provided in this application are described in detail below.

[0006] The present application provides a labor-saving throwing and retracting device for a locking beam, comprising a portal frame spanning across both sides of the locking beam, a handle rotatably arranged above the portal frame, a threaded rod inserted in the handle, and two pulley blocks for clamping on both sides of the web of the locking beam and resting under the upper wing plate of the locking beam, the threaded rod being connected to the pulley block, the handle being threadedly matched with the threaded rod, so that the threaded rod and the pulley block can be driven to move up and down by the rotation of the handle.

[0007] Preferably, a through slot structure for the wing plate of the locking beam to pass through is provided at the lower end of the threaded rod, and the two pulley sets are respectively located on two inner side walls of the through slot structure.

[0008] Preferably, the through-slot structure includes two vertical plates and a horizontal plate connected between the two vertical plates, and the threaded rod is connected to the middle of the horizontal plate.

[0009] Preferably, a limiting member is connected to the transverse plate, and an end of the limiting member is close to or against a side of the portal frame.

[0010] Preferably, the pulley block includes at least two pulley bodies arranged side by side along the extension direction of the locking beam.

[0011] Preferably, an annular step for embedding the wing plate of the locking beam is provided on the outer periphery of the pulley body.

[0012] Preferably, the portal frame includes two columns, a crossbeam connected between the two columns, and an inclined column obliquely supported on the sides of the columns.

[0013] Preferably, a support plate is provided below the upright column and / or the inclined column, and the support plate is connected to the ground via anchor screws.

[0014] Preferably, a through hole for the threaded rod to pass through is provided in the middle of the portal frame.

[0015] The present application also provides a gate locking system, comprising a locking beam labor-saving insertion and withdrawal device as described in any one of the above items.

[0016] The technical solution provided by this application may have the following beneficial effects:

[0017] During the work of throwing in and out the locking beam, by setting the gantry, pulley block and threaded rod handle, turning the handle can cause the threaded rod to rotate, and the threaded rod can drive the pulley block to move up and down when rotating, and the pulley block drives the locking beam to move up and down, so that the locking beam is detached from or falls to the ground, so that when the locking beam is thrown in and out, people can easily and safely pull the locking beam to slide on the pulley block.

[0018] 1) Improve safety. During the process of locking beam being put in and out, the operation space is large and it is outside the guardrail, which can fully guarantee the safety of the operator and the locking beam and avoid the risk of falling into the gate shaft.

[0019] 2) The operation is simple. The modified locking beam only requires one person to complete all the operation. It is easy to operate, saves time and effort, and greatly improves work efficiency.

[0020] 3) Simple structure: The modified locking beam device has a simple structure and is a labor-saving mechanical auxiliary operation. It does not require electric devices or hydraulic devices, is easy to maintain, and is not prone to failure.

[0021] 4) The promotion value is high. The operation mode of the modified locking beam is time-saving and labor-saving, the modification investment cost is low, the maintenance cost is low, and the modification effect is good, which has high practical value and promotion value. It should be understood that the above general description and the detailed description below are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 is a perspective view of the present locking beam labor-saving throwing and retracting device according to some exemplary embodiments;

[0025] Figure 2 is a front view of the locking beam labor-saving throwing and retracting device according to some exemplary embodiments;

[0026] Figure 3 is a side view of the locking beam labor-saving throwing and retracting device according to some exemplary embodiments;

[0027] Figure 4 is a plan view of a locking beam according to some exemplary embodiments.

[0028] In the figure: 1. door frame; 2. handle; 3. threaded rod; 4. pulley block; 5. through-slot structure; 6. limiter; 7. locking beam; 11. column; 12. cross beam; 13. inclined column; 14. support plate. DETAILED DESCRIPTION

[0029] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices or methods consistent with some aspects of the present application.

[0030] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0031] The following is an explanation of the embodiments with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the invention described in the claims. In addition, the entire contents of the configurations shown in the following embodiments are not limited to the solutions required as the invention described in the claims.

[0032] refer to Figure 1-4 The present specific embodiment provides a locking beam labor-saving throwing and retracting device, including a door frame 1, a handle 2, a threaded rod 3 and a pulley block 4, wherein the door frame 1 spans across the two sides of the locking beam 7 so that the side portions of the door frame 1 are located on the two sides of the locking beam 7 and the top of the door frame 1 is located above the locking beam 7; the handle 2 is sleeved on the outside of the threaded rod 3 and is rotatably arranged above the door frame 1, and the handle 2 and the threaded rod 3 are threadedly matched to form a lead screw nut structure, and the threaded rod 3 can be driven to extend and retract by rotating the handle 2. Here, the extension direction of the threaded rod 3 and the rotation axis direction of the handle 2 are both arranged in the vertical direction, which is conducive to realizing the up and down extension and retraction of the threaded rod 3, and then is conducive to reducing the extension and retraction distance of the threaded rod 3.

[0033] Moreover, two pulley blocks 4 are provided, which are used to be clamped on both sides of the web of the locking beam 7 and rest against the bottom of the upper wing plate of the locking beam 7, so that the outer peripheral surface of the pulley block 4 can roll along the extension direction of the locking beam 7. Specifically, the rotation axis direction of the pulley block 4 is perpendicular to the extension direction of the locking beam 7. In this way, the pulley block 4 drives the locking beam 7 to lift up, and when the locking beam 7 leaves the ground, the locking beam 7 is thrown in and out, so that the pulley block 4 can roll along the extension direction of the locking beam 7, which is convenient for disassembly and assembly, saving time and effort.

[0034] It should be noted that the web of the locking beam 7 is as follows Figure 2 The vertical part of the locking beam 7 shown in the figure, the wing plate of the locking beam 7 is as follows Figure 2 The two horizontal parts of the locking beam 7 shown, two flanges and a web, form an I-shape.

[0035] The threaded rod 3 is connected to the pulley block 4 so that the threaded rod 3 and the pulley block 4 can move up and down synchronously. Through the screw nut structure formed by the handle 2 and the threaded rod 3, the locking beam 7 is lifted off the ground to the slide rail by the labor-saving principle of screw lifting and pulley rolling, so that it can be easily cast and retracted. In addition, since the threaded rod 3 is fixed to the pulley block 4, and the pulley block 4 is clamped on both sides of the locking beam 7, the pulley block 4 can limit the threaded rod 3 from rotating under the drive of the handle 2, thereby ensuring the stability of the screw nut structure.

[0036] During the operation of throwing in and out the locking beam 7, the handle 2 is rotated to rotate relative to the threaded rod 3 through the arrangement of the portal frame 1, the pulley block 4, the threaded rod 3 and the handle 2, thereby driving the threaded rod 3 to move up and down, the threaded rod 3 drives the pulley block 4 to move up and down, and the pulley block 4 drives the locking beam 7 to move up and down, so that the locking beam 7 is disengaged from or falls to the ground, so that when the locking beam 7 is thrown in and out, a person can easily and safely pull the locking beam 7 to slide on the pulley block 4.

[0037] With such arrangement, the locking beam 7 is lifted off the ground onto the slide rail by utilizing the labor-saving principle of spiral lifting and pulley rolling, so that it can be easily put into and withdrawn; the structure has low cost, high reliability, low subsequent maintenance cost, simple structure, convenient operation, labor saving and money saving.

[0038] In some embodiments, a through slot structure 5 is provided at the lower end of the threaded rod 3, and the opening of the through slot structure 5 faces downward for the upper wing plate portion of the locking beam 7 to pass through, wherein the two pulley sets 4 are respectively arranged on the two inner side walls of the through slot structure 5, so that the upper wing plate portion of the locking beam 7 can be restrained by the through slot structure 5, thereby limiting the displacement of the locking beam 7 during the casting and retraction process, thereby ensuring the casting and retraction stability.

[0039] Specifically, the through-channel structure 5 includes two vertical plates and a horizontal plate, wherein the two vertical plates are arranged side by side, and the horizontal plate is connected between the two horizontal plates to form an n-shape, and correspondingly, two pulley blocks 4 are respectively arranged on opposite sides of the two vertical plates, and the upper wing plate of the locking beam 7 is limited between the two horizontal plates by the pulley blocks 4. Moreover, the threaded rod 3 is connected to the middle of the horizontal plate, so that the balance of the through-channel structure 5 when subjected to force can be ensured, thereby ensuring the left-right balance of the locking beam 7 when it is thrown and retracted, and preventing the locking beam 7 from deviating.

[0040] Here, the vertical plate and the horizontal plate may be connected by welding or bolts. Of course, the vertical plate and the horizontal plate may also be an integrally formed structure.

[0041] In some preferred schemes, a limiting member 6 is provided on the transverse plate, and the end of the limiting member 6 is close to or against the side of the portal frame 1. Specifically, two limiting members 6 can be provided, one end of the limiting member 6 is fixed on the transverse plate, and the other end extends toward the end of the portal frame 1, so that the limiting member 6 is close to or against the side of the portal frame 1. In this way, due to the action of the limiting member 6, when the locking beam 7 drives the pulley block 4 or the through groove structure 5 to swing left and right during the throwing and retracting process, the limiting member 6 can contact the side of the portal frame 1, thereby reducing the swing amplitude, avoiding safety accidents caused by the swing, and improving stability and reliability.

[0042] Of course, one stopper 6 may be provided, and both ends of the stopper 6 abut against or approach the side of the door frame 1. Alternatively, a slide groove is provided on the inner side of the door frame 1 for the end of the stopper 6 to be embedded, and the stopper can slide up and down along the slide groove.

[0043] Preferably, the transverse plate, the vertical plate and the limiting member 6 can be set as a steel plate structure.

[0044] In some embodiments, the pulley block 4 includes at least two pulley bodies, and the multiple pulley bodies are arranged side by side along the extension direction of the locking beam 7, so that the multiple pulley bodies provide multiple support points for the locking beam 7. In the process of throwing and retracting the locking beam 7, the balance of the locking beam 7 can be ensured, and at the same time, the force of the pulley body is dispersed, thereby reducing the loss of the pulley block 4 caused by throwing and retracting the locking beam 7.

[0045] Furthermore, an annular step is provided on the outer periphery of the pulley body, and the annular steps provided on the two pulley blocks 4 are arranged relative to each other for the upper wing plate of the locking beam 7 to be embedded. In this way, the pulley block 4 can not only support the upper wing plate of the locking beam 7, but also limit the upper wing plate of the locking beam 7 to the left and right, so that the parts in contact with the locking beam 7 are all rolling fit, thereby improving the structural stability.

[0046] Of course, the pulley body may include an inner pulley and an outer pulley, the diameter of the outer pulley being larger than the diameter of the inner pulley, so that the above-mentioned annular step is formed on the outer circumference of the inner pulley and the outer pulley, so that there is no need for processing and grooving, which facilitates processing and assembly.

[0047] In some embodiments, the portal frame 1 includes two columns 11, a crossbeam 12 and an inclined column 13, wherein the crossbeam 12 is connected above the two columns 11 to form a portal structure, and the inclined column 13 is obliquely supported on the side of the column 11. Here, the inclined column 13 can be supported on one side or both sides of the column 11, specifically, the one side or both sides are one side or both sides in the direction of the locking beam 7. In this way, by setting the inclined column 13, when the locking beam 7 is inserted and withdrawn, the inclined force of the portal frame 1 in the direction of the insertion and withdrawal can be improved, thereby ensuring the stability of the support of the portal frame 1.

[0048] Specifically, the columns 11 and the inclined columns 13 may be provided with square steels, and the cross beams 12 may be provided with channel steels. The notches of the cross beams 12 face downwards and are buckled on the upper ends of the columns 11, which are stable and reliable.

[0049] Furthermore, a support plate 14 is provided below the column 11 and / or the inclined column 13. The support plate 14 is connected to the ground through anchor screws. The support plate 14 is configured as a steel plate, and the area of ​​the support plate 14 is larger than the cross-sectional area of ​​the column 11, which can provide balanced and stable support and facilitate the connection with anchor screws.

[0050] In some preferred embodiments, a through hole is provided in the middle of the portal frame 1, and the threaded rod 3 can be telescopically inserted into the through hole, so that the through hole can form a certain limiting effect on the threaded rod 3. Specifically, the through hole is opened in the middle of the beam 12.

[0051] Correspondingly, the handle 2 is against the top of the through hole to facilitate the upward and downward displacement of the threaded rod 3.

[0052] The present locking beam labor-saving insertion and withdrawal device will be described in detail below in conjunction with the above-mentioned embodiments.

[0053] A locking beam labor-saving throwing and retracting device comprises a door frame 1 spanning across both sides of a locking beam 7, a handle 2 rotatably arranged above the door frame 1, a threaded rod 3 passing through the handle 2, and two pulley blocks 4 for clamping on both sides of the web of the locking beam 7 and resting under the upper wing plate of the locking beam 7, the threaded rod 3 is connected to the pulley block 4, the handle 2 is threadedly matched with the threaded rod 3, so that the rotation of the handle 2 drives the threaded rod 3 and the pulley block 4 to move up and down.

[0054] The lower end of the threaded rod 3 is provided with a through groove structure 5 for the wing plate of the locking beam 7 to pass through, and the two pulley blocks 4 are respectively located on the two inner side walls of the through groove structure 5; the through groove structure 5 includes two vertical plates and a horizontal plate connected between the two vertical plates, and the threaded rod 3 is connected to the middle part of the horizontal plate; the horizontal plate is connected to a limiting member 6, and the end of the limiting member 6 is close to or against the side of the portal frame 1.

[0055] The pulley block 4 is provided with at least two pulley bodies arranged side by side along the extending direction of the locking beam 7; and an annular step is provided on the outer periphery of the pulley body for the wing plate of the locking beam 7 to be embedded.

[0056] The portal frame 1 includes two columns 11, a crossbeam 12 connected between the two columns 11, and an inclined column 13 obliquely supported on the side of the column 11; a support plate 14 is arranged below the column 11 and / or the inclined column 13, and the support plate 14 is connected to the ground through anchor screws; a through hole is arranged in the middle of the portal frame 1 for the threaded rod 3 to pass through.

[0057] With such arrangement, the locking beam 7 is lifted off the ground onto the slide rail by utilizing the labor-saving principle of spiral lifting and pulley rolling, so that it can be easily put into and withdrawn; the structure has low cost, high reliability, low subsequent maintenance cost, simple structure, convenient operation, labor saving and money saving.

[0058] The present application also provides a gate locking system, including a locking beam labor-saving throw-in and throw-out device, which is a locking beam labor-saving throw-in and throw-out device as in any one of the above embodiments. With such a configuration, the locking beam 7 is lifted off the ground onto the slide rail by utilizing the labor-saving principle of spiral lifting and pulley rolling, so that it can be thrown in and out easily; the structure has low cost, high reliability, low later maintenance cost, simple structure, convenient operation, labor-saving and money-saving. The derivation process of this beneficial effect is generally similar to the derivation process of the beneficial effect brought by the mobile base, so it will not be repeated in this article.

[0059] Specifically, the gate locking system includes two sets of locking beam labor-saving throwing and retracting devices, which are respectively arranged at both ends of the locking beam 7, so that the locking beam 7 can be more stable and labor-saving during the pushing and pulling process.

[0060] The present locking beam labor-saving insertion and withdrawal device and the gate locking system will be described in detail below in combination with the above embodiments.

[0061] 1. Locking beam length design

[0062] According to the structural layout of the water intake tower of the hydropower station, the locking beam cannot move sideways during the insertion and withdrawal process due to the obstruction of the side concrete frame columns, and can only move along the upstream and downstream (water flow) direction, such as Figure 4 As shown. Therefore, the locking beam can only be designed as a push-pull locking beam. Because the locking beam is manufactured according to national standards, the quality distribution is uniform.

[0063] (1) When the locking beam is extended (from downstream to upstream according to the on-site space), in order to prevent it from falling while crossing the gate shaft, the upstream end length of the gate shaft must be greater than the orifice width without external interference, that is, the upstream end length f needs to be greater than 2 meters, and the locking beam length must be at least 4 meters.

[0064] (2) According to the reconstruction idea, considering the installation of the portal frame and the locking beam when it is fully pulled out, the two portal frames can balance the weight of the locking beam so that one end does not tilt. Therefore, the distance b between the two portal frames must be at least greater than half of 4 meters, that is, 2 meters. At the same time, a+b>c+d+e must be satisfied to ensure that the locking beam will not increase the burden on the 2# pulley block due to the heavy weight on the downstream side when it is lifted, and to ensure stable operation.

[0065] (3) When the locking beam is fully engaged, the locking length e of the locking beam on the downstream side is about 0.5 meters. At the same time, considering the width of the portal frame and the need for the locking beam to exceed the portal frame support point by a certain distance for easy pushing and pulling, the length of a is about 0.5 meters.

[0066] (4) Then a+b+d+e=5 meters (d is the gate shaft width of 2 meters). The distance b between the two door frames at this time is a preliminary calculation based on the total length of the locking beam of 4 meters. The actual length is at least 5 meters, so the distance b between the two door frames needs to be greater than 2.5 meters to be stable without external forces. The length of the locking beam is at least 5.5 meters.

[0067] In summary, considering the convenience of safe operation and the use of space, the length of the locking beam is 6 meters and the weight is 514kg. Among them, a is 0.6 meters, b is 2.7 meters, c is 0.2 meters, d is 2 meters, and e is 0.5 meters. It satisfies a+b>c+d+e, and meets the requirements of safe and stable operation.

[0068] 2. Transmission design

[0069] According to the transformation idea, a transmission device is installed on the locking beam. When the locking beam is cast in and out, the handle is rotated, and the screw rod is driven up through the thread between the handle and the screw rod. The screw rod is connected to the pulley block below, driving the pulley block to lift up. The pulley block drives the locking beam to lift up. When the locking beam leaves the ground, the locking beam can be pulled out.

[0070] 3. Threaded rod selection and design

[0071] According to actual needs, the preliminary design of the threaded rod material is Q235, the handling weight is M = 516Kgm, the maximum stroke is S = 10cm, the speed is V = 100mm / min; the rotation speed is N = 40r / min;

[0072] (1) Screw lead:

[0073]

[0074] (2) Screw length:

[0075] L = maximum stroke + nut length + reserved length, take 15cm.

[0076] (3) Maximum axial load:

[0077] Considering that the locking beam is hoisted at a slow speed, acceleration can be ignored when calculating the maximum load. The maximum axial load is:

[0078] F=mg=516×10=5160N

[0079] (4) Screw shaft diameter:

[0080]

[0081] a is the inverse of the safety factor, which is 0.5;

[0082] n is a coefficient that depends on the screw installation method and is set to 2.

[0083] Calculate the shaft diameter based on the aspect ratio (the aspect ratio is usually less than 60):

[0084]

[0085] Take max(d1,d2), then the shaft diameter must be at least 28.3mm, take 30mm.

[0086] In summary, the lead screw is made of Q235 material, with a length greater than 15cm, 50cm for easy operation, a shaft diameter of 30mm, and a lead of 2.5mm.

[0087] 4. Door frame design

[0088] The portal frame needs to bear the weight of the entire locking beam and pulley block. Based on the company's existing channel steel materials, the Q235 material is recalculated. The locking beam is 6 meters long and weighs 514kg. The pulley block is about 2kg, and the total load-bearing capacity is 516Kg.

[0089] The bending moment generated by the channel steel is:

[0090]

[0091]

[0092] b is the length of the middle force point of the channel steel, that is, the diameter of the screw.

[0093] According to the steel structure design standard (GB50017-2017), the design shear strength of Q235 steel material is f 215N / mm2.

[0094] The minimum section resistance moment is:

[0095]

[0096] γ x is the section plastic development coefficient, which is taken as 1.05 according to the specification.

[0097] Since commonly used channel steels all meet safety requirements, No. 8 channel steel was selected for this renovation based on existing materials.

[0098] Processing and manufacturing requirements: The door frame welding must meet the relevant specifications, remove burrs and polish it smooth.

[0099] 5. Pulley design

[0100] (1) Friction coefficient of pulley block

[0101] In the process of throwing and retracting the locking beam, people only need to overcome the friction between the locking beam and the pulley block. Considering the two pulley blocks as a whole, the pulling force of a normal adult is about 300N to 800N. Considering the stable and easy operation, the designed pulling force value is 200N. The friction coefficient of the pulley is:

[0102] (2) Calculation of load-bearing capacity of pulley block

[0103] During the lifting process of the locking beam, the weight of the locking beam is directly borne by the pulley block. The weight of the locking beam is 514kg, which is borne by two pulley blocks, so the pulley block needs to meet 0.5t. According to calculations, purchasing a 1-ton hand-pushing sports car for modification can meet the load-bearing requirements.

[0104]

[0105] 6. Handle design

[0106] (1) Required driving torque

[0107]

[0108] e: is the lead of the screw;

[0109] η: Mechanical efficiency, taken as 0.85.

[0110] Therefore, the direction of movement here is vertically upward and the friction force can be ignored.

[0111] (2) Rotating handle diameter

[0112] According to the normal pulling force of an adult of about 300N ~ 800N, considering the lightness, the rotation force is taken as F = 50N (about 5KG), then the diameter of the rotating handle is:

[0113]

[0114] In actual production, combined with existing materials, the outer diameter of the round steel ring is 220mm, which meets the needs.

[0115] 7. Limit design

[0116] In order to prevent the locking beam from being pulled out of the track during the insertion and withdrawal process, a limit piece is set at 20cm from the top of the locking beam on both sides to prevent the locking beam from derailing during the insertion and withdrawal process. At the same time, the distance between the pulley blocks is 0.5cm greater than the width of the I-beam to prevent left and right derailment.

[0117] 8. Anti-corrosion design

[0118] The anti-corrosion design service life is in accordance with the specification requirements of more than 10 years. According to the on-site working environment, three layers of anti-corrosion paint are applied. The base layer is epoxy (inorganic) zinc-rich primer with a thickness of 60μm; the middle layer is epoxy micaceous iron intermediate paint with a thickness of 70μm; the topcoat is acrylic aliphatic polyurethane topcoat with a thickness of 70μm.

[0119] It should be noted that the words "first", "second" and so on used in this article are not intended to limit the specific order, but are merely used to distinguish between various components or functions. Figure 1 What it refers to when it is in the placed state.

[0120] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

[0121] It is to be understood that the same or similar parts in the above embodiments can refer to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments. The multiple schemes provided in this application include their own basic schemes, which are independent of each other and do not restrict each other, but they can also be combined with each other without conflict to achieve multiple effects together.

[0122] Although the embodiments of the present application have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present application. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A labor-saving locking beam insertion and withdrawal device, characterized in that: The invention comprises a door frame (1) spanning across two sides of a locking beam (7), a handle (2) rotatably arranged above the door frame (1), a threaded rod (3) inserted into the handle (2), and two pulley blocks (4) for clamping on both sides of the web of the locking beam (7) and resting under the upper wing plate of the locking beam (7), the threaded rod (3) being connected to the pulley block (4), the handle (2) being threadably matched with the threaded rod (3), so that the threaded rod (3) and the pulley block (4) are driven to move up and down by the rotation of the handle (2); The lower end of the threaded rod (3) is provided with a through slot structure (5) for the wing plate of the locking beam (7) to pass through, and the two pulley blocks (4) are respectively located on the two inner side walls of the through slot structure (5); The through-groove structure (5) comprises two vertical plates and a horizontal plate connected between the two vertical plates, and the threaded rod (3) is connected to the middle of the horizontal plate; The horizontal plate is connected to a limiting member (6), and an end of the limiting member (6) is close to or abuts against a side of the portal frame (1); The pulley block (4) has at least two pulley bodies arranged side by side along the extension direction of the locking beam (7); The outer periphery of the pulley body is provided with an annular step for the wing plate of the locking beam (7) to be embedded.

2. The locking beam labor-saving insertion and withdrawal device according to claim 1 is characterized in that: The portal frame (1) comprises two upright posts (11), a crossbeam (12) connected between the two upright posts (11), and an inclined post (13) obliquely supported on the side of the upright posts (11).

3. The locking beam labor-saving insertion and withdrawal device according to claim 2 is characterized in that: A support plate (14) is provided below the upright column (11) and / or the inclined column (13), and the support plate (14) is connected to the ground via anchor screws.

4. The locking beam labor-saving insertion and withdrawal device according to claim 1, characterized in that: A through hole for the threaded rod (3) to pass through is provided in the middle of the portal frame (1).

5. A gate locking system, characterized in that: The utility model comprises a locking beam labor-saving insertion and withdrawal device as claimed in any one of claims 1 to 4.

Images