Variable fulcrum type transfer device

Abstract

The invention discloses a variable fulcrum type transfer device, and belongs to the technical field of projectile body carrying, the variable fulcrum type transfer device comprises a transfer trolley, a supporting stand column, a lever component, a variable fulcrum mechanism and a driving mechanism, the bottom of the supporting stand column is connected with the transfer trolley, and the top of the supporting stand column is hinged to the lever component. The weight of the heavy object is converted into rolling friction force through the wheels at the bottom of the transfer vehicle, and the driving force of operators during transfer is reduced; through the arrangement of the variable fulcrum structure, the driving force for hoisting the heavy object is further greatly weakened, and the driving mechanism is arranged for the variable fulcrum structure, so that the arrangement of the variable fulcrum structure does not influence the up-and-down rotary motion of the lever component and the hoisting of the heavy object, and the driving mechanism is simple to control and can be operated only by pulling a driving rope. The variable fulcrum type transfer device is easy to operate and control, driving force of operators during transfer is greatly reduced, physical strength is greatly saved, and transfer can be achieved only by one person.

Description

Technical Field

[0001] The invention belongs to the technical field of projectile transportation, and in particular relates to a variable fulcrum type transfer device. Background Art

[0002] The projectile is usually heavy. When it is transported on the ground, it usually requires the cooperation of multiple people to complete the transportation, which brings many inconveniences to production. In addition, there are also safety hazards when multiple people cooperate to lift and transport it. The falling of the projectile may injure the transporter. Forklifts are not suitable for narrow workshop environments. Therefore, there is an urgent need for a device that can complete the transportation of projectiles by one person. Summary of the invention

[0003] In response to one or more of the above-mentioned defects or improvement needs in the prior art, the present invention provides a variable fulcrum type transfer device, which is easy to operate and can convert the mass of heavy objects into rolling friction, thereby greatly reducing the driving force of the operator during lifting and transfer, greatly saving physical strength, and only one person is needed to achieve the transfer.

[0004] To achieve the above object, the present invention provides a variable fulcrum type transfer device, which comprises: A transfer vehicle, wherein wheels are installed at the bottom of the transfer vehicle; A support column, one end of which is fixed on the transport vehicle, and the other end of which is provided with a hinge support, and a first through hole is provided on a side of the support column close to the hinge support; A lever component, the lever component is hinged on the hinge support, and a support frame for hoisting is provided at the end of the resistance arm of the lever component; A variable fulcrum mechanism, the variable fulcrum mechanism comprises a support column and a support plate, one end of the support column is fixedly connected to the side of the support column, and the other end is a free end; a second through hole and a third through hole are respectively opened at both ends of the support plate, and the second through hole is sleeved on the resistance arm and can move back and forth along the resistance arm; The driving mechanism comprises a guide sleeve, a driving spring, an adapter and a driving rope, wherein the guide sleeve is installed in the first through hole and is sleeved outside the driving spring, and the guide sleeve, the support column and the resistance arm are located in the same plane; one end of the adapter is fixedly connected to the support plate, and the other end is connected to the driving rope, the other end of the driving rope passes through the inside of the driving spring and the first through hole in sequence and then extends along one side of the power arm of the lever component, and pulling the driving rope located on one side of the power arm can compress the driving spring and drive the support plate to move in a direction close to the support column, so that the third through hole is sleeved on the outside of the free end; the tensioned driving rope is loosened, and the driving spring in a compressed state can push the support plate to move in a direction away from the support column, so that the third through hole is separated from the free end.

[0005] As a further improvement of the present invention, the power arm is a telescopic rod, or an extension rod can be installed at the end of the power arm.

[0006] As a further improvement of the present invention, the adapter is composed of an adapter pin and an adapter ring, one end of the adapter pin is fixedly mounted on the support plate, and the other end is respectively connected to the adapter ring and the drive rope, and the adapter ring is used to resist the drive spring; and / or, One end of the driving spring close to the first through hole is fixedly connected to the bottom of the guide sleeve.

[0007] As a further improvement of the present invention, the first through hole is composed of a coaxially arranged first-order hole and a second-order hole, the aperture of the first-order hole is larger than the aperture of the second-order hole, the guide sleeve is installed in the first-order hole, and the outer surface of the drive rope in the second-order hole abuts against the inner wall surface of the second-order hole.

[0008] As a further improvement of the present invention, there are multiple wheels, at least one of which is a universal wheel with a brake.

[0009] As a further improvement of the present invention, the support frame is provided with a plurality of lifting holes, and the lifting holes can be installed with lifting belts for lifting.

[0010] As a further improvement of the present invention, a handle is provided at the end of the power arm.

[0011] As a further improvement of the present invention, a mounting pin is provided at the end of the driving rope located on one side of the power arm, and the mounting pin is mounted on the handle.

[0012] As a further improvement of the present invention, the second through hole matches the shape and size of the resistance arm, and the outer contour of the cross section of the resistance arm is non-circular.

[0013] As a further improvement of the present invention, a mounting portion and a yielding portion are provided at one end of the support column close to the transfer vehicle to facilitate the installation connection between the support column and the transfer vehicle.

[0014] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0015] In general, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects: (1) The variable fulcrum type transfer device of the present invention comprises a transfer vehicle, a support column, a lever component, a variable fulcrum mechanism, and a driving mechanism, wherein the bottom of the support column is connected to the operating vehicle, and the top is hinged with a lever component, and the lever component is used to greatly reduce the driving force required to lift the heavy object, and the wheels at the bottom of the operating vehicle are used to convert the mass of the heavy object into rolling friction, thereby reducing the driving force of the operator during the transfer; the variable fulcrum structure is set to further greatly reduce the driving force for lifting the heavy object, and the driving mechanism is set for the variable fulcrum structure, so that the setting of the variable fulcrum structure does not affect the up and down rotation movement of the lever component, and the heavy object is lifted, and the driving mechanism is easy to operate, and the operation can be achieved by pulling the driving rope. The variable fulcrum type transfer device of the present invention is easy to operate, and only needs to be pressed to lift and put down the heavy object, and the setting of the transfer vehicle converts the mass of the heavy object into rolling friction, which greatly reduces the driving force of the operator during the transfer, greatly saves physical strength, and only one person is needed to achieve the transfer.

[0016] (2) The variable fulcrum transfer device of the present invention can adjust the length of the power arm according to the mass of the transported heavy object by setting the power arm as a telescopic rod, thereby achieving a labor-saving effect while ensuring the stability of the transfer process.

[0017] (3) The variable fulcrum type transfer device of the present invention has a handle at the end of the power arm, which makes it easier for the operator to hold and push the device.

[0018] (4) The variable fulcrum transfer device of the present invention matches the shape and size of the resistance arm by setting the second through hole, and the outer contour of the cross section of the resistance arm is non-circular, so as to prevent the support plate from rotating along the resistance arm, so that the support plate can only move linearly along the resistance arm, and it is convenient to adjust the third through hole of the support plate to align with the free end of the support column.

[0019] (5) The variable fulcrum type transfer device of the present invention has a plurality of lifting holes on the support frame and is equipped with lifting belts for lifting. The lifting belts can be used to lift heavy objects of various shapes and keep the heavy objects balanced, so as to maintain the stability of the transfer process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the 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 paying creative work.

[0021] Figure 1 2. It is a front view of a variable fulcrum type transfer device in an embodiment of the present invention; Figure 2 is a three-dimensional diagram of a variable fulcrum type transfer device in an embodiment of the present invention; Figure 3 It is a cross-sectional view of the overall structure of the variable fulcrum type transfer device in an embodiment of the present invention; Figure 4 is a schematic structural diagram of a support column in an embodiment of the present invention; Figure 5 is a schematic structural diagram of a lever component in an embodiment of the present invention; Figure 6 is a structural schematic diagram of a variable fulcrum mechanism in an embodiment of the present invention; Figure 7 is a schematic structural diagram of a variable branch driving mechanism in an embodiment of the present invention; In all the drawings, the same figure numbers represent the same technical features, specifically: 1. transfer vehicle; 11. wheels; 2. support column; 21. hinge support; 22. first through hole; 23. mounting portion; 24. yield portion; 3. lever component; 31. resistance arm; 32. power arm; 33. hinge point; 4. variable fulcrum mechanism; 41. support column; 411. free end; 42. support plate; 421. second through hole; 422. third through hole; 5. driving mechanism; 51. guide sleeve; 52. driving spring; 53. adapter; 531. adapter pin; 532. adapter ring; 54. driving rope; 55. mounting pin; 6. support frame; 7. sling; 8. handle. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] Example: See also Figure 1 to Figure 7The variable fulcrum transfer device in the preferred embodiment of the present invention comprises a transfer vehicle 1, a support column 2, a lever component 3, a variable fulcrum mechanism 4, and a driving mechanism 5. The bottom of the transfer vehicle 1 is provided with a wheel 11; one end of the support column 2 is fixed to the operation vehicle 1, and the other end is provided with a hinge support 21, and a first through hole 22 is provided on a side of the support column 2 close to the hinge support 21; the lever component 3 is hinged on the hinge support 21, and the end of the resistance arm 31 of the lever component 3 is provided with a support frame 6 for hoisting; The fulcrum changing mechanism 4 comprises a support column 41 and a support plate 42, one end of the support column 41 is fixedly connected to the side of the support column 2, and the other end is a free end 411; the two ends of the support plate 42 are respectively provided with a second through hole 421 and a third through hole 422, the second through hole 421 is sleeved on the resistance arm 31 and can move back and forth along the resistance arm 31; The driving mechanism 5 includes a guide sleeve 51, a driving spring 52, an adapter 53, and a driving rope 54. The guide sleeve 51 is installed in the first through hole 22 and is sleeved outside the driving spring 52, and the guide sleeve 51, the support column 41 and the resistance arm 31 are located in the same plane; one end of the adapter 53 is fixedly connected to the support plate 42, and the other end is connected to the driving rope 54, the other end of the driving rope 54 passes through the inside of the driving spring 52 and the first through hole 22 in sequence, and then extends along one side of the power arm 32 of the lever component 3. Pulling the driving rope 54 on one side of the power arm 32 can compress the driving spring 52 and drive the support plate 42 to move in a direction close to the supporting column 2, so that the third through hole 422 is sleeved on the outside of the free end 411; loosening the tensioned driving rope 54, the driving spring 52 in a compressed state can push the support plate 42 to move in a direction away from the supporting column 2, so that the third through hole 422 is separated from the free end 411.

[0028] In this preferred embodiment, the specific process of achieving the change of fulcrum is: rotating the resistance arm 31 to adjust the positional relationship between the support plate 42 and the support column 41, so that the third through hole 422 is aligned with the free end 411, pulling the driving rope 54 located on one side of the power arm 32, driving the adapter 53 to compress the driving spring 52, and driving the second through hole 421 of the support plate 42 to move along the resistance arm 31, so that the third through hole 422 is sleeved on the outer side of the free end 411 of the support column 41, so that the support plate 42 and the support column 41 are fixed together, and the lever component 3 enters a locked state and cannot rotate around the hinge support 21. At this time, the fulcrum of the lever component 3 is transferred from the position of the hinge support 21 to the center position between the hinge support 21 and the support plate 42, and the distance from the new fulcrum to the end of the power arm 32 that applies the driving force and the distance from the new fulcrum to the support frame 6 are multiples that are greatly increased, which can greatly reduce the driving force required for transporting heavy objects and save the physical strength of the operator. Furthermore, the process of unlocking the lever component 3 is as follows: releasing the tensioned drive rope 54, and the drive spring 52 in the compressed state pushes the adapter 53 and the support plate 42 to move, so that the third through hole 422 of the support plate 42 is disengaged from the free end 411, and the lever component 3 can rotate around the hinge support 21 again.

[0029] The variable fulcrum type transfer device in the present invention can greatly reduce the driving force for lifting heavy objects through the arrangement of the lever component 1 and the variable fulcrum structure 4; further, the arrangement of the driving mechanism 5 makes it possible for the arrangement of the variable fulcrum structure 4 to not affect the up and down rotational movement of the lever component 1, so that heavy objects can be lifted with simple operation, and the operation can be achieved by simply pulling the driving rope 54.

[0030] Preferably, the length of the resistance arm 31 is 1 / 2 to 2 / 3 of the length of the power arm 32 .

[0031] Preferably, the power arm 32 is a telescopic rod, and the length of the power arm 32 can be adjusted according to the mass of the transported heavy object, thereby achieving a labor-saving effect while ensuring the stability of the transportation process.

[0032] Preferably, an extension rod may be installed at the end of the power arm 32 .

[0033] Exemplarily, a mounting shaft is provided at the end of the power arm 32, and one end of the extension rod has a blind hole for inserting the mounting shaft of the power arm 32 to extend the length of the power arm 32, so that the lever component 3 can be more labor-saving; further, the length of the extension rod is preferably 1.5 to 2 times the sum of the lengths of the power arm 32 and the resistance arm 31.

[0034] In this preferred embodiment, only about 10% of the weight of the force is needed to lift the heavy object. For example, the mass of a projectile is usually about 100Kg~300kg. When transporting it, at least 2 people are needed to lift it. This device only requires one person to achieve the transportation.

[0035] Preferably, a handle 8 is provided at the end of the power arm 32 to facilitate the operator to hold and push the device; preferably, a threaded shaft can also be provided at the other end of the extension rod to install the handle 8.

[0036] Preferably, a mounting pin 55 is provided at the end of the driving rope 54 on one side of the power arm 32 , and the mounting pin 55 is mounted on the handle 8 , so that the driving rope 54 can be wound around the handle 8 , making it convenient for an operator to operate the driving mechanism 5 .

[0037] Preferably, the adapter 53 is composed of an adapter pin 531 and an adapter ring 532 , one end of the adapter pin 531 is mounted and fixed on the support plate 42 , and the other end is respectively connected to the adapter ring 532 and the drive rope 54 , and the adapter ring 532 is used to resist the drive spring 52 .

[0038] Exemplarily, the drive rope 54 is first connected to the end of the adapter pin 531, and the adapter ring 532 is threadedly connected to the adapter pin 531. When the drive rope 54 pulls the adapter pin 531, the adapter ring 532 uses its end face to resist and compress the drive spring 52 to drive the support plate 42 to move toward the direction close to the support column 2.

[0039] Further preferably, one end of the driving spring 52 close to the first through hole 22 is fixed to the bottom of the guide sleeve 51 to prevent the driving spring 52 from escaping from the guide sleeve 51 and ensure that the driving spring 52 moves along the guide sleeve 51 .

[0040] Preferably, the first through hole 22 is a coaxially arranged first-order hole and a second-order hole, the aperture of the first-order hole is larger than the aperture of the second-order hole, the guide sleeve 51 is installed in the first-order hole, and the outer surface of the drive rope 54 in the second-order hole abuts against the inner wall surface of the second-order hole.

[0041] In this preferred embodiment, the driving rope 54 is in close contact with the inner wall surface of the second-order hole. When the driving rope 54 is pulled, the driving rope 54 straightens along the direction of the second-order hole and moves in a straight line. Therefore, when the third through hole 422 is aligned with the free end 411, the axis of the second through hole 421 must be roughly parallel to the axis of the first through hole 22, so that the force exerted by the driving mechanism 5 on the support plate 42 can be parallel to the axis of the second through hole 421, and the second through hole 421 of the support plate 42 moves along the resistance arm 31, and the third through hole 422 is mounted on the free end 411; if the angle between the force exerted by the driving mechanism 5 on the support plate 42 and the axis of the second through hole 421 is too large, the second through hole 421 of the support plate 42 will be limited and stuck by the resistance arm 31 and cannot move along the resistance arm 31.

[0042] Preferably, the second through hole 421 matches the shape and size of the resistance arm 31, and the outer contour of the cross section of the resistance arm 31 is non-circular, so that the support plate 42 can only move in a straight line along the resistance arm 31, so as to prevent the support plate 42 from rotating along the resistance arm 31, making it difficult to adjust the third through hole 422 to align with the free end 411.

[0043] Further preferably, the free end 411 is a stepped structure, wherein the outermost end is smaller in size and matches the shape and size of the third through hole 422, so as to limit the movement of the third through hole 422 along the support column 41, so that the support plate 42 and the support column 41 are fixedly connected at the end of the support column 41, thereby making the new fulcrum of the variable fulcrum structure formed offset a greater distance toward the side of the resistance arm 31.

[0044] Preferably, the length of the support column 41 is 2 / 3 to 4 / 5 of the length of the resistance arm 31 .

[0045] In a preferred embodiment, a mounting portion 23 and a yielding portion 24 are provided at one end of the support column 2 close to the transfer vehicle, so as to facilitate the installation and connection between the support column 2 and the transfer vehicle 1 .

[0046] For example, Figure 4 As shown, the mounting portion 23 is provided with four mounting holes and is fixed to the transfer vehicle 1 by screws, and the clearance portion 24 facilitates the installation of the screws.

[0047] Preferably, the height of the support column 2 is preferably 0.8m~0.9m, which is ergonomic, so that the operator can operate the entire device without bending over, and this height can ensure the lifting of bombs of various specifications.

[0048] Preferably, there are multiple wheels 11, at least one of which is a universal wheel with a brake, and the rolling of the wheel is used to convert the carried weight into rolling force. Since the rolling friction coefficient is small, the driving force required for transporting the heavy object through the transfer vehicle 1 can be greatly reduced.

[0049] Preferably, the support frame 6 is provided with a plurality of lifting holes, and the lifting holes can be installed with lifting belts 7 for lifting. The lifting belts 7 can lift heavy objects of various shapes and keep the heavy objects balanced.

[0050] The variable fulcrum type transfer device of the present invention utilizes a lever component to significantly reduce the driving force required to lift a heavy object, utilizes the wheels at the bottom of the transport vehicle to convert the mass of the heavy object into rolling friction, and reduces the driving force of the operator during transportation; the variable fulcrum structure is set to further significantly reduce the driving force for lifting the heavy object, and a driving mechanism is set for the variable fulcrum structure, so that the setting of the variable fulcrum structure does not affect the up and down rotation movement of the lever component, and the heavy object is lifted, and the driving mechanism is easy to operate, and the operation can be achieved by simply pulling the driving rope. The variable fulcrum type transfer device of the present invention is easy to operate, and only needs to be pressed to lift and put down the heavy object, and the setting of the transfer vehicle converts the mass of the heavy object into rolling friction, which significantly reduces the driving force of the operator during transportation, greatly saves physical strength, and only one person is needed to achieve transportation.

[0051] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A variable fulcrum type transport device, characterized in that: include: A transfer vehicle, wherein wheels are installed at the bottom of the transfer vehicle; A support column, one end of which is fixed on the transport vehicle, and the other end of which is provided with a hinge support, and a first through hole is provided on a side of the support column close to the hinge support; A lever component, the lever component is hinged on the hinge support, and a support frame for hoisting is provided at the end of the resistance arm of the lever component; A variable fulcrum mechanism, the variable fulcrum mechanism comprises a support column and a support plate, one end of the support column is fixedly connected to the side of the support column, and the other end is a free end; a second through hole and a third through hole are respectively opened at both ends of the support plate, and the second through hole is sleeved on the resistance arm and can move back and forth along the resistance arm; The driving mechanism comprises a guide sleeve, a driving spring, an adapter and a driving rope, wherein the guide sleeve is installed in the first through hole and is sleeved outside the driving spring, and the guide sleeve, the support column and the resistance arm are located in the same plane; one end of the adapter is fixedly connected to the support plate, and the other end is connected to the driving rope, the other end of the driving rope passes through the inside of the driving spring and the first through hole in sequence and then extends along one side of the power arm of the lever component, and pulling the driving rope located on one side of the power arm can compress the driving spring and drive the support plate to move in a direction close to the support column, so that the third through hole is sleeved on the outside of the free end; the tensioned driving rope is loosened, and the driving spring in a compressed state can push the support plate to move in a direction away from the support column, so that the third through hole is separated from the free end.

2. The variable pivot point transfer device according to claim 1, characterized in that: The power arm is a telescopic rod, or an extension rod can be installed at the end of the power arm.

3. The variable pivot point transfer device according to claim 1, characterized in that: The adapter is composed of an adapter pin and an adapter ring, one end of the adapter pin is fixed on the support plate, and the other end is respectively connected to the adapter ring and the drive rope, and the adapter ring is used to resist the drive spring; and / or, One end of the driving spring close to the first through hole is fixedly connected to the bottom of the guide sleeve.

4. The variable pivot point transfer device according to claim 1, characterized in that: The first through hole is composed of a coaxially arranged first-order hole and a second-order hole, the aperture of the first-order hole is larger than the aperture of the second-order hole, the guide sleeve is installed in the first-order hole, and the outer surface of the drive rope in the second-order hole abuts against the inner wall surface of the second-order hole.

5. The variable pivot point transfer device according to claim 1, characterized in that: There are multiple wheels, at least one of which is a universal wheel with a brake.

6. The variable pivot point transfer device according to claim 1, characterized in that: The support frame is provided with a plurality of lifting holes, and the lifting holes can be installed with lifting belts for lifting.

7. The variable pivot point transfer device according to claim 1, characterized in that: A handle is arranged at the end of the power arm.

8. The variable pivot point transfer device according to claim 7, characterized in that: The end of the driving rope located on one side of the power arm is provided with a mounting pin, and the mounting pin is mounted on the handle.

9. The variable pivot point transfer device according to claim 1, characterized in that: The second through hole matches the shape and size of the resistance arm, and the outer contour of the cross section of the resistance arm is non-circular.

10. The variable pivot point transfer device according to claim 1, characterized in that: The end of the support column close to the transfer vehicle is provided with a mounting portion and a yielding portion to facilitate the installation connection between the support column and the transfer vehicle.

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