A buffer device and a collision prevention device for unloading concrete buckets from a cable crane.

Abstract

This invention discloses a buffer device and an anti-collision device for unloading concrete hoppers for cable cranes. The buffer device includes a telescopic rod inside a cylinder sleeve, with a spiral groove arranged around the outer surface of the telescopic rod. The spiral groove has a deep groove and a shallow groove, with a recess in the shallow groove. The rear end of the telescopic rod has a sleeve and a first spring. A second spring is coaxially arranged inside the first spring, passing through the first spring and the sleeve and applying force to the telescopic rod. A protrusion is provided on the outer wall of the sleeve. A lever is provided, with one end of the lever corresponding to the protrusion via a protrusion head, and the other end of the lever having a movable pin. The movable pin is axially movable but not radially movable, and its front end corresponds to the spiral groove. The anti-collision device for unloading concrete hoppers for cable cranes of this invention is installed on the unloading platform of the concrete hopper. The side wall of the unloading platform has an anti-collision block, which has a buffer device. This invention provides an effective buffering effect.

Description

Technical fields:

[0001] This invention relates to the field of construction collision avoidance technology, and in particular to a buffer device and a collision avoidance device for unloading concrete buckets from cable cranes. Background technology:

[0002] A concrete bucket is a steel container used to transport concrete mix. Due to its large weight, it is often used in dam construction to lift the bucket for concrete pouring. During the lifting process, the bucket is placed on a discharge platform for unloading. The concrete bucket exerts a certain impact on the discharge platform during this process. If the impact is too great, it can damage the discharge platform, affecting the progress of the project and increasing the risk of accidents during construction. Summary of the Invention:

[0003] In order to solve the above-mentioned technical problems and overcome the shortcomings of the prior art, the first aspect of the present invention provides a buffer device, and the second aspect of the present invention provides a cable crane concrete bucket unloading anti-collision device.

[0004] One aspect of the buffer device includes a telescopic rod movably disposed within a cylinder liner, and a collision pad for contacting an impacting object. The collision pad is fixed to the front end of the telescopic rod. The telescopic rod is cylindrical and has a spiral groove around its outer circumference. The spiral groove has a deep groove and a shallow groove, forming a step within the spiral groove. The shallow groove is located near the tail end of the telescopic rod and has a recess.

[0005] The telescopic rod has a sleeve at its rear end, and a first spring is provided therein to apply a force to the telescopic rod. A second spring is also coaxially arranged inside the first spring, passing through the first spring and the sleeve, and applying a force to the telescopic rod. The outer wall of the sleeve is provided with protrusions.

[0006] A lever is provided, with one end of the lever corresponding to the protrusion via a protrusion head, and the other end of the lever is provided with a movable pin. The movable pin can move axially but cannot move radially, and the front end of the movable pin corresponds to the spiral groove.

[0007] In one type of buffer device as described above, a third spring located at the rear end of the movable pin pushes the movable pin into the spiral groove, and the movable pin is hinged to the other end of the lever.

[0008] The spring is housed in the movable pin sleeve, passes through the outer wall of the cylinder liner, and corresponds to the spiral groove. The movable pin sleeve is vertically fixed to the outer wall of the cylinder liner.

[0009] The middle end of the lever is hinged to a hinge seat on the outer wall of the cylinder liner.

[0010] The protrusion passes through the outer wall of the cylinder liner and then corresponds to the outer wall of the sleeve.

[0011] In one type of buffer device as described above, the wall of the recess is a second gentle slope, allowing the movable pin to slide from the recess onto the stepped surface.

[0012] The end of the spiral groove near the front end of the telescopic rod is the head of the spiral groove, and the corresponding other end is the tail. A first rotating chamber for the movable pin is provided at the head of the spiral groove. The bottom surface of the first rotating chamber is flush with the bottom of the deep groove. The step is connected to the step surface by a first gentle slope, so that the movable pin can slide from the deep groove to the step surface.

[0013] A movable pin is provided at the end of the spiral groove, and the bottom surface of the second rotating chamber is flush with the bottom of the deep groove. The side of the step is provided with an inclined surface.

[0014] A buffer device as described above, wherein at least one recess is provided in the shallow groove.

[0015] The outer wall of the sleeve is provided with at least two protrusions, namely a first protrusion near the telescopic rod and a second protrusion away from the telescopic rod.

[0016] The distance between the front end of the active pin and the protrusion is the first distance.

[0017] When the tail end of the telescopic rod contacts the front end of the sleeve: the distance between the first ramp and the first protrusion is greater than the first spacing. The distance between the second ramp and the first protrusion is less than the first spacing. The distance between the second ramp and the second protrusion is greater than the first spacing.

[0018] Under the action of the lever: when the front end of the movable pin corresponds to the deep groove, the recess, the first rotating chamber, or the second rotating chamber, the distance from the lever's protrusion to the central axis of the sleeve is greater than the distance from the surface of the protrusion to the central axis of the sleeve. When the front end of the movable pin corresponds to the stepped surface, the distance from the lower surface of the protrusion to the central axis of the sleeve is less than the distance from the surface of the protrusion to the central axis of the sleeve.

[0019] In the buffer device described above, a protective housing is provided on the outer wall of the cylinder liner, which covers the lever, hinge seat, pin sleeve, and the hole on the cylinder liner through which the movable pin and protrusion pass.

[0020] A second aspect of the present invention provides a concrete hopper unloading anti-collision device, which is installed on the concrete hopper unloading platform. The unloading platform sidewall has an anti-collision block, and the anti-collision block has an adaptation structure adapted to a buffer device of the first aspect. At least one of the aforementioned buffer devices is installed in the adaptation structure.

[0021] According to the above-mentioned anti-collision device for unloading concrete buckets for cable cranes, it further includes a warning component. The warning component includes two placement slots, which are respectively located on the front and rear surfaces of the unloading anti-collision block. A vertical plate is provided inside the placement slot, and an LED indicator is provided on one side of the vertical plate. An iron sheet is provided at the top of the vertical plate, and a magnet is provided at the top of the iron sheet. A groove is provided on one end surface of the inner side of the placement slot, and a second rotating shaft is provided on the bottom surface of one end of the groove. A connecting rod is provided on one side of the second rotating shaft, and a first rotating shaft is provided at one end of the connecting rod.

[0022] According to the above-mentioned anti-collision device for unloading concrete tanks of cable cranes, a protective groove is provided on the surface of the unloading platform, a buffer spring is provided inside the protective groove, a support plate is provided at the top of the buffer spring, and a buffer pad is provided at the top of the support plate.

[0023] According to the above-mentioned anti-collision device for unloading concrete tanks for cable cranes, a pull handle is fixedly connected to one side surface of the vertical plate, and the surface of the pull handle is provided with anti-slip texture.

[0024] According to the above-mentioned anti-collision device for unloading concrete tanks for cable cranes, the vertical plate is made of plastic, and there are two vertical plates in total.

[0025] The LED indicator lights are detachably connected to the vertical plate, and there are a total of several LED indicator lights.

[0026] The beneficial effects that this invention can achieve are:

[0027] 1. A buffer device according to the first aspect of the present invention, wherein when an impacting object contacts the impact pad, the first spring and the second spring at the rear end can buffer the impact force, the first spring and the second spring are simultaneously compressed and stored, and the corresponding action of the spiral groove and the movable pin causes the telescopic rod to rotate with the impact pad.

[0028] After the impact is released, the first spring and the second spring push the telescopic rod to move outward. The cooperation between the movable pin, the spiral groove, and the protrusion of the lever with the protrusion causes the sleeve to move intermittently. The intermittent movement and impact on the telescopic rod generate vibration, thus shaking off the dirt.

[0029] The second aspect of the present invention relates to a concrete hoist unloading anti-collision device for cable cranes. When the hoist body is placed on the unloading platform for unloading, the hoist body will have an impact force on the surface of the unloading platform. At this time, the impact pad will transfer the impact force to the telescopic rod. During the mutual movement of the various components, the impact force received by the impact pad will be effectively offset, ensuring that the impact force generated by the hoist body on the unloading platform during the unloading process can be minimized, ensuring that the unloading platform will not be damaged, and improving the safety factor of construction.

[0030] Meanwhile, due to the rotation and vibration of the telescopic rod and the impact pad, the concrete overflowing from the bucket, after being poured onto the telescopic rod and the impact pad, cannot adhere to them and is shaken off, preventing the concrete from adhering to the invention and solidifying.

[0031] In low-light conditions at night, when the cable crane operator lifts the main body of the hoisting tank onto the unloading platform, the invention can accurately place the main body of the hoisting tank under the guidance of LED indicator lights, thereby improving the efficiency of construction. The structure is simple and practical.

[0032] When the main body of the hoisting tank is placed on the unloading platform, the present invention can effectively buffer the main body of the hoisting tank during the descent, effectively avoiding the problem of damage to the bottom of the hoisting tank due to the large impact force when the bottom of the hoisting tank directly contacts the top surface of the unloading platform. Attached image description:

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the buffer device structure of the present invention;

[0035] Figure 2 This is a schematic diagram of the telescopic rod and spiral groove structure of the present invention;

[0036] Figure 3 This is a schematic diagram of the operation of the buffer device of the present invention;

[0037] Figure 4 This is a schematic diagram showing the unfolded surface of the telescopic rod of the present invention, mainly illustrating the spiral groove structure;

[0038] Figure 5 This is a schematic diagram showing the distribution of the stepped surface, pit, first gentle slope, second gentle slope, first rotating chamber, and second rotating chamber in the spiral groove of the present invention.

[0039] Figure 6 This is a schematic diagram showing the working interaction of the spiral groove, lever, and protrusion on the outer wall of the sleeve in this invention;

[0040] Figure 7 This is a schematic diagram of the anti-collision device for unloading concrete tanks for cable cranes according to the present invention;

[0041] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point A in the middle;

[0042] Figure 9 This is a side cross-sectional view of the unloading anti-collision block of the present invention;

[0043] Figure 10 For the present invention Figure 7 Enlarged structural diagram at point C.

[0044] Figure 11 This is a schematic diagram of the unloading platform structure of the present invention.

[0045] The components include: 1. Hoisting tank body; 2. Unloading platform; 3. Unloading anti-collision block;

[0046] Placement slot 14; Vertical plate 15; LED indicator light 16; Magnet 17; Iron sheet 18; Pull handle 19; Groove 20; First rotating shaft 21; Connecting rod 22; Second rotating shaft 23; Protective groove 24; Buffer spring 25; Support plate 26; Buffer pad 27;

[0047] 31. Impact pad; 32. Telescopic rod; 33. Cylinder liner; 34. Protective housing; 35. Third spring; 36. Movable pin sleeve; 37. Hinge seat; 38. Lever; 39. Movable pin; 40. First spring; 41. Second spring; 42. Spiral groove; 43. Step surface; 44. Recess; 45. Second ramp; 46. First rotating chamber; 47. Second rotating chamber; 48. First ramp; 49. Sleeve; 50. Protrusion; 51. First protrusion; 52. Detailed implementation method:

[0048] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0049] Example 1:

[0050] Buffer devices are mainly used at various impact points to cushion the impact.

[0051] In this device, the buffering is mainly accomplished by the first spring and the second spring. When the impact force is applied to the impact pad, the force of the impact pad is transmitted to the first spring and the second spring at the rear through the telescopic rod to complete the buffering.

[0052] The impact pad 31 faces the impacting object. For example, if the movement direction of the main body 1 of the hanging tank is horizontal, the impact pad is arranged vertically and is plate-shaped to increase the area to receive the impact. For further cushioning, in this example, a rubber layer and a wood layer are added to the surface of the impact pad, and a steel plate reinforcement layer is added to the other side. The impact pad is fixed to the front end of the telescopic rod 32.

[0053] In this example, refer to Figure 1 The telescopic rod 32 is arranged horizontally to transmit the impact of the impact pad 31 to the first spring 40 and the second spring 41 at the rear.

[0054] The telescopic rod 32 is a cylinder and is movably installed inside the cylinder liner 33, with at least a large gap between it and the inner wall of the cylinder liner, for example, at least 1 mm. When the diameter of the telescopic rod in the example is 100 mm, it is more appropriate to set the inner diameter of the cylinder liner to 104 mm. It is also necessary to apply lubricating oil, such as grease, to the inside of the cylinder liner to further allow the telescopic rod to rotate freely and move axially within the cylinder liner.

[0055] refer to Figure 2 A spiral groove 42 is provided around the outer circular surface of the telescopic rod 32. The spiral groove has a large helix angle. In this example, the helix angle is at least 45°. When the telescopic rod moves radially, it makes the movable pin 39 slide more smoothly in the spiral groove.

[0056] refer to Figure 4 The surface of the telescopic rod is hypothetically unfolded, mainly showing the spiral groove structure. The spiral groove contains deep and shallow grooves, forming steps within it. The width of the deep groove is greater than the diameter of the movable pin's tip, allowing the movable pin to slide within it. When the diameter of the movable pin's tip is 10mm, the width of the deep groove is at least 11mm. The shallow groove is essentially the step surface 43, and the width of step surface 43 is at least half the diameter of the movable pin's tip, preventing the movable pin from falling into the deep groove when sliding on the step surface.

[0057] After cutting the telescopic rod with an imaginary plane parallel to its axis, the helical groove is located within the cross-section. Within this cross-section, the groove near the tail end of the telescopic rod is shallow, and the groove near the front end is deep. When the telescopic rod diameter is 100mm, the deep groove can be set to a depth of 15mm, the shallow groove to a depth of 8mm, and the resulting step height to be 7mm. When the telescopic rod moves backward, the movable pin is pushed into the deep groove and slides relative to it; when the telescopic rod moves forward, the movable pin is pushed into the shallow groove and moves relative to it.

[0058] Depending on the length of the telescopic rod, the spiral groove can wrap around the rod once. The main requirement is to ensure that the helix angle of the spiral groove reaches 45°. If the length of the telescopic rod is insufficient and the helix angle is at least 45°, the spiral groove can be left unwrapped around the rod once.

[0059] refer to Figure 5 Imagine the surface of the telescopic rod unfolding and then observe the step structure. There is at least one pit 44 in the shallow groove; the bottom of the pit is on the same plane as the bottom of the deep groove, which can also be understood as having the same cylindrical surface formed by the axis of the telescopic rod. This allows the movable pin to slide to the step surface 43 halfway through the second gentle slope. For example, if the movable pin turns back before reaching the first rotating chamber (the first spring pushes the telescopic rod forward), the movable pin can slide along the deep groove into the pit and then climb up to the platform interface from the second gentle slope.

[0060] The movement of the movable pin described in this example is relative to the spiral groove; in reality, the movable pin remains stationary.

[0061] The width (or diameter) of the recess 44 is greater than the diameter of the front end of the movable pin, allowing the movable pin 39 to fall into the recess 44 when moving on the step surface 43. The wall of the recess is a second gentle slope 45; specifically, the end of the spiral groove near the front end of the telescopic rod is the end of the spiral groove, and the corresponding other end is the tail end. The second gentle slope 45 is located on the tail end side of the recess, allowing the movable pin 39 to slide back from the recess onto the step surface 43; and the tail end side of the recess is preferably a vertical plane perpendicular to the axis of the telescopic rod (forming a cliff-like shape).

[0062] The end of the spiral groove near the front end of the telescopic rod 32 is the head of the spiral groove, and the corresponding other end is the tail. A first rotating chamber 46 for the movable pin is provided at the head of the spiral groove. The bottom surface of the first rotating chamber is flush with the bottom of the deep groove. The first rotating chamber is connected to the step surface through a first gentle slope 48, so that the movable pin can slide from the deep groove to the step surface. A second rotating chamber 47 for the movable pin is provided at the tail of the spiral groove 42. The bottom surface of the second rotating chamber 47 is flush with the bottom of the deep groove. An inclined surface is provided on the side of the step.

[0063] The telescopic rod 32 has a sleeve 49 at its rear end, which is positioned between the telescopic rod and the first spring 40. The sleeve 49, the telescopic rod, and the first spring 40 have the same outer diameter. A second spring 41 is coaxially arranged inside the first spring, passing through the first spring and the sleeve 49 and applying a force to the telescopic rod. The outer wall of the sleeve has at least two protrusions: a first protrusion 51 near the telescopic rod and a second protrusion 52 away from the telescopic rod. In one example, the outer wall of the sleeve has a groove parallel to the axis of the sleeve, extending through the front and rear of the sleeve. The width of the groove is greater than the width of the lever's protrusion 50, allowing the lever's protrusion to slide freely within the groove. The first and second protrusions are positioned within the groove.

[0064] In this design, the protrusion of lever 38 corresponds to the protrusion on the outer wall of sleeve 49. The movable pin at the other end of lever 38 is axially movable but not radially movable. The front end of the movable pin passes through the outer wall of cylinder sleeve 33 and corresponds to the spiral groove 42. The rear end is set in movable pin sleeve 36. There is also a third spring 35 in movable pin sleeve 36 to apply pressure to push the movable pin into the spiral groove 42. Movable pin sleeve 36 is vertically welded to the outer wall of cylinder sleeve 33. The movable pin is hinged to the other end of the lever. The middle end of the lever is hinged to the hinge seat 37 on the outer wall of cylinder sleeve. The protrusion of the lever passes through the outer wall of cylinder sleeve and corresponds to the groove on the outer wall of sleeve 49.

[0065] Set the distance between the front end of the movable pin 39 and the protrusion 50 as the first distance. In this example, the first distance is 400mm.

[0066] When the tail end of the telescopic rod 32 is in contact with the front end of the sleeve 49:

[0067] The distance between the first ramp 48 and the first protrusion 51 is greater than the first distance; for example, in this example, the distance between the first ramp 48 and the first protrusion 51 is 420mm. When the front end of the movable pin climbs up the step surface 43 through the first ramp 48 due to the rotation of the telescopic rod, the movable pin pushes the lever to press down the protrusion and stop at the first protrusion 51, blocking the advance of the sleeve.

[0068] The distance between the second gentle slope 45 and the first protrusion 51 is less than the first distance; after the front end of the movable pin falls into the recess 44, the lever causes the protrusion to tilt upward, abandoning the blocking sleeve. The sleeve suddenly moves forward under the push of the first spring 40, hitting the telescopic rod and generating vibration.

[0069] The distance between the second ramp 45 and the second protrusion 52 is greater than the first distance; when the front end of the movable pin climbs up the step surface 43 through the second ramp, the movable pin pushes the lever 38 to press down the protrusion and stop at the second protrusion 52, thus blocking the advance of the sleeve again.

[0070] Under the action of lever 38: when the front end of the movable pin corresponds to the deep groove, the recess 44, the first rotating chamber 46, and the second rotating chamber 47, the distance from the protrusion of the lever to the central axis of the sleeve 49 is greater than the distance from the surface of the protrusion to the central axis of the sleeve 49; therefore, when the front end of the movable pin corresponds to the deep groove, the recess, the first rotating chamber 46, and the second rotating chamber 47, the protrusion of the lever will not obstruct the sleeve, and the sleeve can move forward under the push of the first spring 40.

[0071] When the front end of the movable pin corresponds to the step surface 43, the distance from the lower surface of the protrusion 50 to the central axis of the sleeve is less than the distance from the surface of the protrusion to the central axis of the sleeve. Therefore, when the front end of the movable pin 39 corresponds to the step surface, the protrusion 50 will form a block on the sleeve, and the sleeve stores energy under the push of the first spring 40.

[0072] A protective shell 34 is provided on the outer wall of the cylinder liner 33. The protective shell 34 covers the lever 38, the hinge seat 37, the pin sleeve, and the hole on the cylinder liner 33 through which the movable pin and the protrusion 50 pass.

[0073] Because the movable pin remains radially stationary, when the telescopic rod moves backward, the deep groove side of the spiral groove presses against the movable pin, causing it to slide along the deep groove of the telescopic rod. The lever protrusion 50 remains in an upward-curving state, offering no obstruction to the sleeve. (Reference) Figure 3 a. When the telescopic rod moves forward, the shallow groove side of the spiral groove presses against the movable pin, and the movable pin slides along the stepped surface of the telescopic rod.

[0074] When the impacting object strikes the impact pad, the force of the impact pad is transmitted through the telescopic rod 32 to the first spring 40 and the second spring 41 at the rear, where it is cushioned and compressed, generating stored energy. Simultaneously, the telescopic rod 32 retracts into the rear cylinder liner 33. As the telescopic rod retracts and moves axially, the edge of the deep groove approaches the movable pin. Since the movable pin cannot move radially, the telescopic rod rotates under the combined action of the deep groove and the movable pin. Ultimately, the movable pin slides to the front end of the spiral groove 42, reaching the first rotating chamber 46.

[0075] refer to Figure 5 Upon impact, the object moves away: the first and second springs release their compressive energy, pushing the sleeve 49 and the telescopic rod forward. The movable pin slides into the first ramp 48 in the first rotating chamber, and then slides from the ramp 48 onto the step surface 43. The step surface is higher than the deep groove, pushing the movable pin upward. The protrusion of the lever 38 moves downward. When the first protrusion 51 reaches the lever protrusion, the lever protrusion locks the first protrusion 51, thus blocking the forward movement of the sleeve 49, and the sleeve stops moving forward. (Reference) Figure 3 a. The telescopic rod continues to move forward under the push of the second spring, thus increasing the distance between the telescopic rod and the sleeve. (Reference) Figure 3b. As the telescopic rod moves forward and rotates, when the movable pin reaches the recess 44, the third spring 35 pushes the movable pin into the recess, causing it to fall in. The lever protrusion then sharply rises, releasing its contact with the first protrusion 51. (Reference) Figure 3 c. The sleeve suddenly moves forward under the push of the first spring, impacting the telescopic rod and generating vibration. The vibration helps to dislodge dirt from the impact pad and telescopic rod. Rotation can also dislodge dirt from the impact pad and telescopic rod.

[0076] As the telescopic rod 32 continues to advance and rotate until the movable pin 39 slides back onto the step surface via the second ramp 45, the lever protrusion presses down again, causing the lever protrusion 50 to engage with the second protrusion 52. The sleeve stops advancing, while the telescopic rod continues to advance under the push of the second spring, thus widening the distance between the telescopic rod and the sleeve. As the telescopic rod advances and rotates, when the movable pin reaches the second rotating chamber 47, the third spring 35 pushes the movable pin into the second rotating chamber 47. The movable pin falls into the second rotating chamber, and the lever protrusion 50 suddenly rises, releasing its engagement with the second protrusion 52. The sleeve, pushed by the first spring, suddenly advances again, striking the telescopic rod and generating vibration. The movable pin reaches the end of the spiral groove 42, locking the telescopic rod and preventing it from advancing further.

[0077] For example, if the movable pin turns backward before reaching the first rotating chamber (the first spring pushes the telescopic rod forward), the movable pin can slide along the deep groove into the pit and then climb back up to the platform from the second gentle slope.

[0078] Therefore, the present invention has the following effects: First, the impact of the first and second springs can buffer the impact of the object hitting the impact pad. Second, the cooperation between the spiral groove and the movable pin 39 causes the telescopic rod and the impact pad to rotate during movement, and under the action of centrifugal force, the dirt on them is thrown off, or after the direction is reversed, the dirt that was originally attached to the telescopic rod will be flipped to the bottom of the telescopic rod and fall off naturally under the action of gravity. Third, the vibration generated by the repeated impact of the sleeve on the telescopic rod causes the dirt to fall off.

[0079] Example 2:

[0080] The anti-collision device for unloading concrete buckets from cable cranes uses the buffer device shown in Example 1.

[0081] The system includes a main body 1 of a lifting tank and a unloading platform 2 for placing the main body 1. An unloading anti-collision block 3 is provided on the side of the unloading platform 2 closest to the main body 1. The unloading anti-collision block 3 has a cavity on the side closest to the main body 1; this cavity is the fitting structure for the buffer device in Example 1. (Reference) Figure 8 The present invention has at least two adapter structures, each of which is equipped with the buffer device in Example 1.

[0082] When the concrete bucket is hoisted from the side, it is hoisted at a very slow speed to avoid collisions due to the risk of impact. However, with the use of a buffer device, the issue of collisions can be eliminated, improving work efficiency and increasing production safety.

[0083] In other embodiments, this embodiment discloses, such as Figure 7-9 As shown, it also includes a prompting component, which includes a placement slot 14. There are two placement slots 14, which are respectively opened on the front and rear surfaces of the unloading anti-collision block 3. A vertical plate 15 is provided inside the placement slot 14. An LED indicator 16 is provided on one side of the vertical plate 15. An iron sheet 18 is provided at the top of the vertical plate 15. A magnet 17 is provided at the top of the iron sheet 18. A groove 20 is opened on one end surface of the inner side of the placement slot 14. A second rotating shaft 23 is provided on the bottom surface of one end of the inner side of the groove 20. A connecting rod 22 is provided on one side of the second rotating shaft 23. A first rotating shaft 21 is provided at one end of the connecting rod 22.

[0084] During construction, the vertical plate 15 is first pulled outward. At this time, the magnet 17 and the iron plate 18 are separated by force. Simultaneously, the connecting rod 22 gradually moves to a horizontal position under the action of the first rotating shaft 21 and the second rotating shaft 23. When the connecting rod 22 reaches the appropriate position, the vertical plate 15 is placed in the designated position. At this time, the LED indicator 16 is exposed to the outside world and serves as an indicator. By designing the indicator component, in low-light conditions at night, when the cable crane operator lifts the main body 1 of the hoisting tank onto the unloading platform 2, the main body 1 of the hoisting tank can be accurately placed under the guidance of the LED indicator 16, which improves the efficiency of construction. The structure is simple and practical.

[0085] In other embodiments, this embodiment discloses, such as Figure 11 As shown, a protective groove 24 is provided on one side of the top surface of the unloading platform 2. A buffer spring 25 is provided inside the protective groove 24. A support plate 26 is provided at the top of the buffer spring 25. A buffer pad 27 is provided at the top of the support plate 26. By designing the protective groove 24, buffer spring 25, support plate 26, and buffer pad 27, when the main body 1 of the hanging tank is placed on the unloading platform 2, it can effectively buffer the main body 1 of the hanging tank during the falling process. It can effectively avoid the problem that the bottom of the main body 1 of the hanging tank will be damaged due to the large impact force when the bottom of the hanging tank directly contacts the top surface of the unloading platform 2.

[0086] In other embodiments, a fixing bolt is provided at the connection between the unloading anti-collision block 3 and the unloading platform 2, and a total of four fixing bolts are provided; so that the unloading anti-collision block 3 can be firmly fixed to one side surface of the unloading platform 2, and the anti-collision effect on the main body of the tank is better.

[0087] In other embodiments, such as Figure 7 As shown, a traction rope is provided at the top of the main body 1 of the suspended tank, and a suspension ring is connected to the top of the traction rope; this facilitates the cable crane operator to lift and move the main body 1 of the suspended tank via the cable crane.

[0088] In other embodiments, this embodiment discloses, please refer to Figure 9-10 As shown, a pull handle 19 is fixedly connected to one side surface of the vertical plate 15. The surface of the pull handle 19 is provided with anti-slip texture; this makes it easy for personnel to pull the vertical plate 15 out from the inside of the placement groove 14, providing convenience for the staff.

[0089] In other embodiments, this embodiment discloses, please refer to Figure 10 As shown, the vertical plate 15 is made of plastic, and there are two vertical plates 15 in total; this effectively reduces the weight of the vertical plate 15, so that the magnet 17 and the iron plate 18 can firmly fix the vertical plate 15 under the interaction.

[0090] In other embodiments, such as Figure 9-10 As shown, the LED indicator 16 is detachably connected to the vertical plate 15, and there are several LED indicator 16 in total. When the LED indicator 16 is damaged, it is easy for personnel to remove the damaged LED indicator 16 for replacement, thus ensuring that the LED indicator 16 provides better guidance to the cable crane operator.

[0091] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A buffer device, characterized in that, It includes a telescopic rod that is movable inside the cylinder liner, a collision pad for contacting the impacting object, the collision pad being fixed to the front end of the telescopic rod, the telescopic rod being a cylinder, and a spiral groove being provided around the outer circumference of the telescopic rod, the spiral groove having a deep groove and a shallow groove, forming a step within the spiral groove, with a shallow groove on the side near the tail end of the telescopic rod; and a pit on the shallow groove. The telescopic rod has a sleeve at its rear end, and a first spring is provided to apply a force from the sleeve to the telescopic rod. A second spring is also coaxially arranged inside the first spring, passing through the first spring and the sleeve and applying a force to the telescopic rod. A protrusion is provided on the outer wall of the sleeve. When the impact force is applied to the impact pad, the force of the impact pad is transmitted to the first and second springs at the rear through the telescopic rod to complete the buffering; A lever is provided, with one end of the lever corresponding to the protrusion via a protrusion head, and the other end of the lever is provided with a movable pin. The movable pin can move axially but cannot move radially, and the front end of the movable pin corresponds to the spiral groove. The wall of the recess is a second gentle slope, allowing the movable pin to slide from the recess to the step surface. The end of the spiral groove near the front end of the telescopic rod is the end of the spiral groove, and the corresponding other end is the end. A first rotating chamber for the movable pin is provided at the end of the spiral groove. The bottom surface of the first rotating chamber is flush with the bottom of the deep groove. The first rotating chamber is connected to the step surface through a first gentle slope, so that the movable pin can slide from the deep groove to the step surface. A movable pin is provided at the end of the spiral groove, and the bottom surface of the second rotating chamber is flush with the bottom of the deep groove. The side of the step is provided with an inclined surface.

2. A buffer device as described in claim 1, characterized in that, A third spring at the rear end of the movable pin pushes the movable pin into the spiral groove, and the movable pin is hinged to the other end of the lever. The third spring is disposed in the movable pin sleeve, passes through the outer wall of the cylinder liner, and corresponds to the spiral groove; the movable pin sleeve is vertically fixed on the outer wall of the cylinder liner; The middle end of the lever is hinged to a hinge seat on the outer wall of the cylinder liner; The protrusion passes through the outer wall of the cylinder liner and then corresponds to the outer wall of the sleeve.

3. A buffer device as described in claim 1, characterized in that, The shallow groove has at least one pit; The outer wall of the sleeve is provided with at least two protrusions, namely a first protrusion near the telescopic rod and a second protrusion away from the telescopic rod; The distance between the front end of the movable pin and the protrusion is the first distance; When the tail end of the telescopic rod contacts the front end of the sleeve: the distance between the first gentle slope and the first protrusion is greater than the first spacing; The distance between the second gentle slope and the first protrusion is less than the first distance; The distance between the second gentle slope and the second protrusion is greater than the first distance; Under the action of the lever: when the front end of the movable pin corresponds to the deep groove, the recess, the first rotating chamber, or the second rotating chamber, the distance from the protrusion of the lever to the central axis of the sleeve is greater than the distance from the surface of the protrusion to the central axis of the sleeve; when the front end of the movable pin corresponds to the stepped surface, the distance from the lower surface of the protrusion to the central axis of the sleeve is less than the distance from the surface of the protrusion to the central axis of the sleeve.

4. A buffer device as described in claim 1, characterized in that, A protective shell is provided on the outer wall of the cylinder liner, which covers the lever, hinge seat, pin sleeve, and the holes on the cylinder liner through which the movable pin and the protrusion pass.

5. A collision prevention device for unloading concrete hoppers using cable cranes, installed on the unloading platform of the concrete hopper, characterized in that, The unloading platform sidewall has an unloading anti-collision block, and the unloading anti-collision block has an adaptation structure adapted to a buffer device according to any one of claims 1-4; at least one of the buffer devices is installed in the adaptation structure.

6. The anti-collision device for unloading concrete buckets for cable cranes as described in claim 5, characterized in that, It also includes a prompting component, which includes two placement slots, one on the front surface and the other on the rear surface of the unloading anti-collision block. A vertical plate is provided inside the placement slot, and an LED indicator is provided on one side of the vertical plate. An iron sheet is provided at the top of the vertical plate, and a magnet is provided at the top of the iron sheet. A groove is provided on one end surface of the inner side of the placement slot, and a second rotating shaft is provided on the bottom surface of one end of the groove. A connecting rod is provided on one side of the second rotating shaft, and a first rotating shaft is provided at one end of the connecting rod.

7. The anti-collision device for unloading concrete buckets for cable cranes as described in claim 6, characterized in that, The surface of the unloading platform is provided with a protective groove, a buffer spring is provided inside the protective groove, a support plate is provided at the top of the buffer spring, and a buffer pad is provided at the top of the support plate.

8. The anti-collision device for unloading concrete buckets for cable cranes as described in claim 6, characterized in that, A pull handle is fixedly connected to one side of the vertical plate, and the surface of the pull handle is provided with anti-slip texture.

9. The anti-collision device for unloading concrete buckets for cable cranes as described in claim 6, characterized in that, The vertical plate is made of plastic, and there are two vertical plates in total; The LED indicator lights are detachably connected to the vertical plate, and there are a total of several LED indicator lights.

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