Damping trundle and transportation equipment

Abstract

The utility model provides a damping trundle and transportation equipment. The damping trundle comprises a bearing seat used for installing the transportation equipment, a connecting piece movably installed on the bearing seat, a wheel installed on the connecting piece and a damping spring set arranged between the bearing seat and the connecting piece. Wherein the damping spring group comprises a plurality of springs which are arranged in parallel, and the plurality of springs can participate in stress in batches along with the increase of load. The damping spring set is arranged between the bearing seat and the connecting shaft, under the no-load working condition, part of springs are stressed to play a supporting role, and the situation that the damping effect is poor due to the fact that the rigidity of the springs is too large is avoided; as the load is increased, under the full-load working condition, the multiple springs can be jointly stressed to play a supporting role, the situation that effective supporting cannot be provided due to insufficient spring rigidity is avoided, and the damping effect and stability of the trundle under different load working conditions are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to transportation equipment technical field especially relates to a damping trundle and transportation equipment. BACKGROUND

[0002] When the transportation trolley with conventional trundles is used to transport some fragile objects such as liquid crystal carrier plate glass, the transportation equipment is prone to vibrate due to walking on some road surfaces with height difference or unevenness, causing the glass to crack or break.

[0003] The existing patent CN 206501651 U provides a damping trundle, which sets high-strength spiral springs as damping parts between the roller and the supporting plate to absorb and buffer the vibration generated during the walking of the equipment and reduce the damage of impact force to the transported objects. However, when transporting liquid crystal carrier plate glass in the workshop, there are at least two working conditions of empty load and full load. If the stiffness of the spring is not selected properly, it is easy to appear too hard when empty and too soft when full, which affects the damping effect and stability of the equipment. SUMMARY

[0004] One of the technical problems to be solved by the utility model is how to make the trundle have good damping effect and stability to cope with different load working conditions.

[0005] To solve the above technical problems, the utility model embodiment provides a damping trundle, which comprises: a bearing seat for installing a transportation equipment, a connecting piece movably installed on the bearing seat, a wheel installed on the connecting piece, and a damping spring group arranged between the bearing seat and the connecting piece; wherein the damping spring group comprises a plurality of springs arranged in parallel, and the plurality of springs can participate in stress in batches as the load increases.

[0006] In some embodiments, the damping spring group comprises a first damping spring and a second damping spring; wherein in the initial state, the two ends of the first damping spring are connected to the bearing seat and the connecting piece respectively, and one end of the second damping spring is connected to the bearing seat or the connecting piece, and the other end is provided with a gap between the connecting piece or the bearing seat.

[0007] In some embodiments, the bearing seat comprises a bearing plate, a plurality of first guide rods parallel to each other and arranged in a ring shape on the bottom surface of the bearing plate, and a compression ring installed at the end of the plurality of first guide rods away from the bearing plate, and the connecting piece comprises a second guide rod parallel to the first guide rod and slidingly arranged in the compression ring, and a pressing plate installed at the end of the second guide rod towards the bearing plate, and the pressing plate is provided with a plurality of through holes for the first guide rods to pass through; wherein the first guide rod is sleeved with the first damping spring, and the second guide rod is sleeved with the second damping spring.

[0008] In some embodiments, the connecting piece further comprises a bearing mounted on the second guide rod away from the bearing plate, and the wheel is rotatably mounted on the bearing around the second guide rod.

[0009] In some embodiments, two ends of the first damping spring are respectively connected to the bottom surface of the bearing plate and the top surface of the pressing plate, one end of the second damping spring is arranged on the bottom surface of the pressing ring or the top surface of the bearing, and the other end is capable of abutting against the top surface of the bearing or the bottom surface of the pressing ring.

[0010] In some embodiments, the wheel comprises a wheel frame connected to the bearing and a roller mounted on the wheel frame.

[0011] In some embodiments, the roller is made of polyurethane material.

[0012] In some embodiments, the roller is internally provided with a plurality of buffer cavities distributed in a ring shape.

[0013] In some embodiments, two ends of the first damping spring and the second damping spring are provided with rubber buffer pads.

[0014] The utility model also provides a kind of transport equipment, and transport equipment is installed above described damping trolley.

[0015] Through the above technical scheme, the utility model provides a kind of damping trolley and transport equipment, and the damping trolley is arranged between the bearing seat and the connecting shaft by a plurality of springs in parallel to constitute damping spring group.In the no-load condition, only part of the spring group is stressed to play a supporting role, which avoids the situation that the trolley is too hard and the damping effect is poor due to the excessive stiffness of the spring in the no-load state;With the increase of load, in the full-load condition, multiple springs in the spring group can jointly stress to play a supporting role, which avoids the situation that the trolley is too soft and cannot provide effective support due to the insufficient stiffness of the spring in the full-load state, significantly improves the damping effect and stability of the trolley under different load conditions. ACCURATE DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating creative labor.

[0017] Figure 1 It is the structure schematic view of the damping trolley of the utility model;

[0018] Figure 2 It is the cross section schematic view of the damping trolley of the utility model;

[0019] Figure 3is a structure schematic view of the bearing seat of the utility model;

[0020] Figure 4 is a structure schematic view of the connecting shaft of the utility model;

[0021] Figure 5 is a cross section schematic view of the roller of the utility model.

[0022] Mark explanation:

[0023] 1, bearing seat; 101, bearing plate; 102, first guide rod; 103, compression ring; 104, fixed hole; 2, connecting piece; 201, second guide rod; 202, pressing plate; 203, through hole; 204, bearing; 3, wheel; 301, wheel frame; 302, roller; 303, buffer cavity; 4, shock absorbing spring group; 401, first shock absorbing spring; 402, second shock absorbing spring; 5, rubber buffer pad. Specific implementation

[0024] The embodiment of the utility model is further described in detail below in combination with the drawings and examples. The detailed description of the following examples and the drawings are used to exemplarily illustrate the principle of the utility model, but cannot be used to limit the scope of the utility model, and the utility model can be realized in many different forms, and is not limited to the specific examples of the utility model in the text, but includes all technical solutions falling within the scope of the claims.

[0025] The utility model provides these examples in order to make the utility model thorough and complete, and fully express the scope of the utility model to the person skilled in the art. It should be noted that: unless otherwise specified, the relative arrangement of components and steps, the component of material, the numerical expression and the numerical value illustrated in these examples should be interpreted as merely exemplary, and not as a limitation.

[0026] It should be noted that, in the description of the utility model, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer" and the like is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. When the absolute position of the described object changes, the relative position relationship can also change accordingly.

[0027] In addition, the "first", "second" and similar words used in the utility model do not represent any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. "Include" or "contain" and similar words mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements.

[0028] It should be further noted that in the description of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connecting" and "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. When it is described that a specific device is located between the first device and the second device, there can be an intermediate device between the specific device and the first device or the second device, or there can be no intermediate device.

[0029] All the terms used in the utility model have the same meaning as understood by ordinary skilled persons in the field to which the utility model belongs, unless otherwise specifically defined. It should also be understood that the terms defined in, for example, a general dictionary should be interpreted to have a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or excessively formalized sense, unless otherwise defined herein.

[0030] The technology, method and equipment known to ordinary skilled persons in the relevant field can not be discussed in detail, but under appropriate circumstances, the technology, method and equipment should be regarded as part of the specification.

[0031] As Figures 1-5 shown, the utility model provides a kind of shock absorbing caster, including: the bearing seat 1 for installing transport equipment, connecting piece 2 movably installed in bearing seat 1, wheel 3 installed on connecting piece 2 and shock absorbing spring set 4 arranged between bearing seat 1 and connecting piece 2;Wherein, shock absorbing spring set 4 includes multiple springs arranged in parallel, and multiple springs can participate in stress in batches as load increases.

[0032] Generally, the damping caster is installed at the bottom of the transportation equipment, and the connecting member 2 is movably installed in the vertical direction on the bearing seat 1. Under the action of the load, the spring arranged between the bearing seat 1 and the connecting member 2 can absorb the vibration and provide the supporting effect. Under the action of the empty load or the light load, part of the springs contained in the damping spring set 4 is preferentially compressed to provide the supporting force, at this time, the total stiffness of the damping spring set 4 is the sum of the stiffness of the part of the preferentially compressed springs, the damping spring set 4 has a smaller stiffness, which avoids that the stiffness of the spring set is too large under the action of the empty load or the light load, and the damping caster is too hard, and the damping effect is poor. With the increase of the load, the remaining springs in the spring set also begin to be compressed to provide the supporting force, at this time, the total stiffness of the damping spring set 4 is the sum of the stiffness of all the springs, the damping spring set 4 has a larger stiffness, which avoids that the stiffness of the spring set is too small under the action of the heavy load or the full load, and the damping caster is too soft, and the damping caster cannot be stably supported, and the damping effect and the stability of the damping caster under the action of different loads are effectively improved.

[0033] As shown in Figure 1 and Figure 2 , in some embodiments, the damping spring set 4 includes a first damping spring 401 and a second damping spring 402; wherein in the initial state, the two ends of the first damping spring 401 are connected to the bearing seat 1 and the connecting member 2 respectively, and one end of the second damping spring 402 is connected to the bearing seat 1 or the connecting member 2, and the other end is provided with a gap between the connecting member 2 or the bearing seat 1.

[0034] Specifically, the initial state refers to the state of the damping caster in the empty load and the static state after being installed on the transportation equipment. As shown in Figure 2 , the two ends of the first damping spring 401 are connected to the bearing seat 1 and the connecting member 2 respectively, and the top end of the second damping spring 402 is provided with a gap L between the bearing seat 1, under the action of the empty load or the light load, the first damping spring 401 is compressed under the action of the load, and the bearing seat 1 and the connecting member 2 keep the relative displacement in the vertical direction which is less than the gap L under the supporting action of the first damping spring 401, at this time, the total stiffness of the damping spring set 4 is the stiffness of the first damping spring 401. With the increase of the load, the first damping spring 401 is further compressed, the relative displacement between the bearing seat 1 and the connecting member 2 increases and is greater than the gap L, and the second damping spring 402 begins to be compressed under the action of the load and provide the supporting action, at this time, the total stiffness of the damping spring set 4 is the sum of the stiffness of the first damping spring 401 and the second damping spring 402, and the supporting stability of the damping caster is improved. By arranging the first damping spring 401 and the second damping spring 402 which can participate in the force in batches with the increase of the load between the bearing seat 1 and the connecting member 2, the damping effect of the damping caster under the empty load / light load working condition and the supporting stability under the heavy load / full load working condition are effectively improved.

[0035] AsFigure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the support base 1 includes a support plate 101, a plurality of first guide rods 102 that are parallel to each other and arranged in a ring on the bottom surface of the support plate 101, and a pressure ring 103 installed on the ends of the plurality of first guide rods 102 away from the support plate 101. The connecting member 2 includes a second guide rod 201 that is parallel to the first guide rods 102 and slidably disposed in the pressure ring 103, and a pressure plate 202 installed on the end of the second guide rod 201 facing the support plate 101. The pressure plate 202 is provided with a plurality of through holes 203 for the first guide rods 102 to pass through. A first damping spring 401 is sleeved on the first guide rod 102, and a second damping spring 402 is sleeved on the second guide rod 201.

[0036] Specifically, the bearing plate 101 is provided with fixing holes 104 for installing transport equipment. A plurality of first guide rods 102 are provided at the bottom of the bearing plate 101. The pressure plate 202 is provided with the same number of through holes 203 as the first guide rods 102. The pressure plate 202 is movably mounted on the plurality of first guide rods 102 along the extension direction of the first guide rods 102 by means of the plurality of through holes 203. The pressure ring 103 fixedly mounted on the end of the first guide rod 102 away from the bearing plate 101 plays the role of blocking the pressure plate 202 to prevent it from falling off. The connecting piece 2 is movably mounted on the bearing seat 1 vertically through the pressure plate 202 and the second guide rod 201 passing through the center hole of the pressure ring 103. The first damping spring 401 and the second damping spring 402 extend and contract axially under the guidance of the first guide rod 102 and the second guide rod 201 respectively to ensure the stability of the compression process.

[0037] like Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments, the two first guide rods 102 are evenly arranged around the axis extending in the direction of the second guide rod 201, so as to avoid the first damping spring 401 and the second damping spring 402 providing support force deviating from the axis direction under load, which is beneficial to the stability of the shock-absorbing caster.

[0038] like Figure 1 and Figure 4 As shown, in some embodiments, the connecting member 2 further includes a bearing 204 mounted on the end of the second guide rod 201 away from the support plate 101, and the wheel 3 is rotatably mounted on the bearing 204 about the second guide rod 201. Specifically, the inner ring of the bearing 204 is fixedly mounted on the end of the second guide rod 201, and the outer ring of the bearing 204 is fixedly mounted on the wheel 3. The wheel 3 achieves universal rotation relative to the connecting member 2 through the bearing 204. The bearing 204 can be a common ball bearing or a sliding bearing.

[0039] As shown in Figure 1 and Figure 2 , in some embodiments, two ends of the first damping spring 401 are connected to the bottom surface of the bearing plate 101 and the top surface of the pressing plate 202 respectively, one end of the second damping spring 402 is arranged on the bottom surface of the pressing ring 103 or the top surface of the bearing 204, and the other end can abut against the top surface of the bearing 204 or the bottom surface of the pressing ring 103.

[0040] Specifically, the radial dimension of the bearing 204 is greater than the second guide rod 201, so that one end of the second damping spring 402 sleeved on the second guide rod 201 can be connected to the top surface of the bearing 204 protruding the second guide rod 201. As shown in Figure 2 , in the initial state, the two ends of the first damping spring 401 abut against the bottom surface of the bearing plate 101 and the top surface of the pressing plate 202 respectively, one end of the second damping spring 402 is connected to the top surface of the bearing 204, and the other end has a gap L with the bottom surface of the pressing ring 103, so that the second damping spring 402 does not provide support in the no-load or light-load state. With the increase of load, the pressing ring 103 moves downward to contact and compress the second damping spring 402, and the second damping spring 402 starts to provide support.

[0041] As shown in Figure 1 and Figure 5 , in some embodiments, the wheel 3 includes a wheel frame 301 connected to the bearing 204 and a roller 302 mounted in the wheel frame 301. Specifically, the wheel frame 301 of the wheel 3 is fixedly connected to the outer ring of the bearing 204, and the roller 302 is rotatably arranged in the wheel frame 301. The wheel frame 301 serves to connect and protect the roller 302, which is conducive to prolonging the service life of the roller 302 and facilitating the maintenance or replacement of parts of the damping caster.

[0042] In some embodiments, the roller 302 is made of polyurethane material. Specifically, the transport trolley for transporting liquid crystal carrier glass is usually used in a dust-free workshop. Compared with conventional PVC, rubber and other materials, polyurethane material has the advantages of wear resistance and silence, which effectively avoids the phenomenon of dust generated by friction between the roller 302 and the ground, and reduces the noise when the equipment walks. In other embodiments, the roller 302 can also be made of super artificial rubber material.

[0043] As shown in Figure 5 , in some embodiments, a plurality of buffer cavities 303 are arranged in the roller 302. Specifically, in order to further enhance the damping and silence effect of the roller 302, a plurality of buffer cavities 303 are arranged in the roller 302. The plurality of buffer cavities 303 can reduce vibration and absorb walking noise, effectively reduce the weight of the roller 302, and improve the durability and comfort of the damping caster.

[0044] AsFigure 2 As shown, in some embodiments, the two ends of the first damping spring 401 and the second damping spring 402 are provided with rubber buffers 5.

[0045] Specifically, the two ends of the first damping spring 401 and the second damping spring 402 are connected to the bearing seat 1 and the connecting piece 2 through the rubber buffers 5, further improving the damping effect of the damping caster, while avoiding direct contact between the spring and the bearing seat 1 and the connecting piece 2, reducing wear and tear, and being conducive to improving the service life of the damping caster.

[0046] The utility model also provides a kind of transport equipment, which is installed with the above-mentioned damping caster, and the damping spring group 4 in the damping caster has smaller rigidity under no-load or light-load working condition, to avoid the caster being too hard under no-load or light-load working condition, improve the damping effect of the transport equipment, with load increasing, the damping spring group 4 in the damping caster has larger rigidity under heavy-load or full-load working condition, to provide sufficient support force for heavy-load or full-load working condition, improve the stability of the transport equipment.

[0047] So far, various embodiments of the utility model have been described in detail. In order to avoid obscuring the concept of the utility model, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions of the utility model according to the above description.

[0048] Although some specific embodiments of the utility model have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the utility model. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be replaced equivalently without departing from the scope and spirit of the utility model. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way.

Claims

1. A shock absorbing caster wheel characterized by, The application relates to a bearing seat (1) for mounting a transport device, a connecting piece (2) movably mounted on the bearing seat (1), a wheel (3) mounted on the connecting piece (2), and a damping spring set (4) arranged between the bearing seat (1) and the connecting piece (2). The damping spring set (4) comprises a plurality of springs arranged in parallel, and the plurality of springs can be involved in force in batches as the load increases. The damping spring set (4) comprises a first damping spring (401) and a second damping spring (402).

2. The shock absorbing caster wheel of claim 1, wherein, In an initial state, two ends of the first damping spring (401) are connected to the bearing seat (1) and the connecting piece (2) respectively, and one end of the second damping spring (402) is connected to the bearing seat (1) or the connecting piece (2), and the other end is provided with a gap between the connecting piece (2) or the bearing seat (1). The bearing seat (1) comprises a bearing plate (101), a plurality of first guide rods (102) arranged in parallel and in a ring shape on the bottom surface of the bearing plate (101), and a pressing ring (103) mounted on the end of the first guide rod (102) away from the bearing plate (101), the connecting piece (2) comprises a second guide rod (201) parallel to the first guide rod (102) and slidingly arranged in the pressing ring (103), and a pressing plate (202) mounted on the end of the second guide rod (201) towards the bearing plate (101), and a plurality of through holes (203) are arranged on the pressing plate (202) for the first guide rod (102) to pass through.

3. The shock absorbing caster wheel of claim 2, wherein, The first damping spring (401) is sleeved on the first guide rod (102), and the second damping spring (402) is sleeved on the second guide rod (201). The connecting piece (2) further comprises a bearing (204) mounted on the end of the second guide rod (201) away from the bearing plate (101), and the wheel (3) is axially rotatably mounted on the bearing (204) around the second guide rod (201).

4. The shock absorbing caster wheel of claim 3, wherein, Two ends of the first damping spring (401) are connected to the bottom surface of the bearing plate (101) and the top surface of the pressing plate (202) respectively, one end of the second damping spring (402) is arranged on the bottom surface of the pressing ring (103) or the top surface of the bearing (204), and the other end can abut against the top surface of the bearing (204) or the bottom surface of the pressing ring (103).

5. The shock absorbing caster wheel of claim 4, wherein, The wheel (3) comprises a wheel frame (301) connected to the bearing (204) and a roller (302) mounted on the wheel frame (301).

6. The shock absorbing caster wheel of claim 4, wherein, The roller (302) is made of polyurethane material.

7. The shock absorbing caster wheel of claim 6, wherein, A plurality of buffer cavities (303) are arranged in the roller (302) in a ring direction.

8. The shock absorbing caster wheel of claim 6, wherein, Rubber buffer pads (5) are arranged at two ends of the first damping spring (401) and the second damping spring (402).

9. The shock absorbing caster wheel of claim 2, wherein, The transport device is provided with the damping caster wheel according to any one of claims 1-9.

10. A transport apparatus, characterized by ​

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