CN217111471U - Chain tightness measuring device - Google Patents

Abstract

The utility model provides a can measure the chain elasticity measuring device of the elasticity of chain convenient and fast ground, this chain elasticity measuring device's characterized in that possesses: a base part; a measuring member fixed to one side of the base portion in the left-right direction; and the force application member is fixed on the other side of the base part in the left-right direction, the force application member comprises a weight measuring instrument, a back plate and a spiral lifting mechanism, the weight measuring instrument is used for measuring the pressure applied downwards by the chain to be measured, one end of the back plate is fixed on the weight measuring instrument, the other end of the back plate is connected to the spiral lifting mechanism in a non-movable mode, and the weight measuring instrument and the back plate lift together along with the lifting of the spiral lifting mechanism.

Description

Chain tightness measuring device

Technical Field

The utility model relates to a chain elasticity measuring device especially relates to a chain elasticity measuring device for measuring the elasticity of the conveying chain in the conveying chain bed.

Background

Conventionally, in the field of automated vehicle production, a conveying chain bed is generally used to convey each member for manufacturing a vehicle. In the above-described conveyor chain bed, if the tightness of the conveyor chain is too tight, the service life of the conveyor chain is shortened, and on the other hand, if the tightness of the conveyor chain is too loose, tooth skipping may occur during operation. In addition, when a plurality of conveyor chains are used in a conveyor chain bed at the same time, if the tightness of each conveyor chain is not uniform, the conveyor chains may be stuck, which may directly affect the conveying accuracy of each component of the vehicle and may adversely affect the tact time of the vehicle.

In order to measure the tightness of a conveyor chain in a conveyor chain bed, conventionally, two operators are generally required to measure the tightness in the following manner: first, one operator mounts one end of the weight scale to the chain to be measured, lifts the weight scale with a force equivalent to 16kg, and then, another operator observes the reading of the scale, thereby measuring the tightness of the conveyor chain.

However, in the conventional method for measuring the tightness of the conveyor chain, since two operators are required to perform the measurement operation at the same time, the measurement method is complicated, and thus, the labor and the measurement time are wasted. Furthermore, since the weighing scale needs to be lifted by the operator with a force equivalent to 16kg during the measurement, there is a possibility that the operator may strain his waist, which is a safety concern. Further, in the process of measuring the tightness of the conveyor chain, if the measurement location is limited, it is difficult to simultaneously perform the measurement operation by two operators in the above-described conventional manner.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can measure the chain elasticity measuring device of the elasticity of chain convenient and fast ground.

In order to achieve the above object, the utility model provides a chain elasticity measuring device, its characterized in that possesses: a base part; a measuring member fixed to one side of the base portion in the left-right direction; and the force application member is fixed on the other side of the base part in the left-right direction, the force application member comprises a weight measuring instrument, a back plate and a spiral lifting mechanism, the weight measuring instrument is used for measuring the pressure applied downwards by the chain to be measured, one end of the back plate is fixed on the weight measuring instrument, the other end of the back plate is connected to the spiral lifting mechanism in a non-movable mode, and the weight measuring instrument and the back plate lift together along with the lifting of the spiral lifting mechanism.

The utility model discloses an among the chain elasticity measuring device, also can, spiral elevating system has screw rod and screw nut, screw nut with screw rod threaded connection accomodate the recess has been seted up midway to screw nut's the outside position, the backplate the other end has U style of calligraphy opening shape, will the backplate the other end inserts rotate under the state in the accomodate recess during screw nut, accomodate the recess can for the backplate the other end rotates and unable relative movement.

The utility model discloses an among the chain elasticity measuring device, also can, spiral elevating system has screw rod and rotation regulation unit, rotation regulation unit has swivel nut and accepts the sleeve, it is located to accept the sleeve swivel nut's top to via antifriction bearing with swivel nut connects, makes rotating swivel nut and make when swivel nut goes up and down for the screw rod, accept the sleeve only with swivel nut goes up and down together and can not carry out the rotation action, the backplate the other end is fixed in accept the sleeve.

The utility model discloses an among the chain elasticity measuring device, also can, spiral elevating system has handle, lead screw vertical lift unit and lift microscope carrier, and, spiral elevating system constitutes to: when the handle is rotated, the screw rod vertical lifting unit correspondingly enables the lifting carrying platform to rise, and the other end of the back plate is fixed on the lifting carrying platform.

The utility model discloses an among the chain elasticity measuring device, also can, it is any kind among scale, slide caliper, the laser range finding sensor to measure the component.

The utility model discloses an among the chain elasticity measuring device, also can, the backplate passes through bolt-up and detachably is fixed in the check weighing apparatus.

The utility model discloses an among the chain elasticity measuring device, also can, the check weighing apparatus is high accuracy digital display check weighing apparatus.

The utility model discloses a chain elasticity measuring device also can be, be provided with the microscope carrier above the check weighing apparatus.

In the chain tightness measuring device of the present invention, it may be that the screw elevating mechanism is driven and controlled by the control device.

According to the chain tightness measuring device of the present invention, since the base portion is provided with the measuring member and the force applying member composed of the weight measuring instrument, the screw elevating mechanism and the back plate, and one end of the back plate is fixed to the weight measuring instrument and the other end is connected to the screw elevating mechanism without relative movement, the weight measuring instrument ascends together with the back plate along with the ascent of the screw elevating mechanism, and when the weight measuring instrument ascends to display a pressure equivalent to 16kg from the chain to be measured, the entire tightness of the chain to be measured can be calculated and judged by measuring the lifting height of the chain to be measured at that time by the measuring member, therefore, compared with the above-mentioned conventional measuring method requiring simultaneous operation by two operators, the measuring work of the tightness of the conveyor chain can be completed by one operator, and the labor and the measuring time can be greatly saved, the tightness of the chain can be conveniently and quickly measured.

Drawings

Fig. 1 is a schematic front view showing a chain tightness measuring device 100 according to an embodiment of the present invention.

Fig. 2 is a schematic side view showing a chain tightness measuring device 100 according to an embodiment of the present invention.

Fig. 3 is a schematic plan view showing a chain tightness measuring device 100 according to an embodiment of the present invention.

Fig. 4 is a schematic view showing a measurement performed by using the chain tightness measuring device 100 according to the embodiment of the present invention.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. However, the following embodiments are merely exemplary of preferred configurations of the present invention, and the scope of the present invention is not limited to these configurations. The dimensions, materials, shapes, relative arrangements, and the like of the components described in the embodiments are not intended to limit the scope of the present invention to these unless otherwise specifically indicated.

In addition, like reference numerals refer to like elements throughout the drawings. In the drawings, the size of some of the features may be varied for clarity. Also, all terms (including technical and scientific terms) used in the specification have the meaning commonly understood by those skilled in the art, unless otherwise defined. Well-known functions or constructions may not be described in detail for brevity and/or clarity.

In addition, as used in this specification, the singular forms "a", "an", and "the" include plural referents unless the content clearly dictates otherwise. The terms "comprising," "including," and "containing" as used in this specification specify the presence of stated features, but do not preclude the presence or addition of one or more other features. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.

Next, referring to fig. 1 to 3, a chain tightness measuring device 100 according to an embodiment of the present invention will be described in detail.

As shown in fig. 1 and 2, a chain tightness measuring device 100 according to an embodiment of the present invention includes a weight scale 10, a scale 20 as a measuring member, an elevating mechanism 30, a base portion 40, and a back plate 50.

In the chain tightness measuring device 100, the base part 40 has a flat bottom surface. The scale 20 is fixed to one side (left side in fig. 1) of the base portion 40 in the left-right direction. In the present embodiment, the scale 20 is detachably fixed to the base portion 40 by fastening with a bolt, but the scale 20 may be fixed by providing a slot in the base portion 40 and inserting the scale 20 into the slot, or the scale 20 may be directly welded and fixed to the base portion 40. The scale 20 has a range of 20cm, for example.

In the present embodiment, the weight scale 10 measures a downward pressure applied to the chain under test 200 (see fig. 4 described later), and a stage 10a for applying a downward pressure to the chain under test 200 is provided above the weight scale 10. In the present embodiment, the weight scale 10 is, for example, a high-precision digital display weight scale, and the magnitude of the force from the chain 200 to be measured can be measured and displayed in real time on the display in a digital display manner.

In the chain tightness measuring device 100 of the present embodiment, the elevating mechanism 30 is, for example, a screw elevating mechanism, and includes a screw 31 and a screw nut 32. The bottom end of the screw 31 is fixed to the base portion 40 by welding or screwing, and is fixed to the rear side position of the weight scale 10 (see fig. 2, for example). The screw nut 32 is screwed to the screw 31, and can be moved up and down with respect to the screw 31 by rotating the screw nut 32. A storage recess 32a is opened at an outer middle position of the screw nut 32.

In the present embodiment, the back plate 50 is a member having an L-shape in side view, and includes a first back plate 51 and a second back plate 52. The first back plate 51 of the back plate 50 is detachably fixed to the back surface of the weight scale 10 by fastening with bolts, but the first back plate 51 of the back plate 50 may be fixed to the back surface of the weight scale 10 by welding. The end of the second back plate 52 of the back plate 50 has a U-shaped opening (for example, a fork shape) not shown, and is removably inserted into the receiving groove 32a of the screw nut 32 of the elevating mechanism 30.

Specifically, in a state where the second back plate 52 is inserted into the housing recess 32a of the screw nut 32, the end portion of the second back plate 52 having the U-shaped opening shape is in contact with or spaced apart from the housing recess 32a by a slight gap, and when the screw nut 32 is rotated with respect to the screw 31, the bottom surface (outer circumferential surface) of the housing recess 32a is rotatable with respect to the end portion of the second back plate 52, and the second back plate 52 is not movable with respect to the screw nut 32. Accordingly, when the screw nut 32 is rotated relative to the screw 31, the back plate 50 and the weight scale 10 to which the back plate 50 is fixed are moved up and down together with the up and down movement of the screw nut 32 relative to the screw 31.

In the present embodiment, the weight scale 10, the lifting mechanism 30, and the back plate 50 constitute a biasing member in the chain tightness measuring device 100, and the entire biasing member is provided on the other side (the right side in fig. 1) in the left-right direction of the base portion 40.

Next, a procedure of attaching the chain tightness measuring device 100 according to an embodiment of the present invention will be described.

First, the scale 20 is fastened by a bolt to one side (for example, the left side in fig. 1) in the left-right direction of the base portion 40 to which the screw 31 of the elevating mechanism 30 is fixed by welding or screwing, and in this state, the bottom end of the scale 20 is positioned on the same plane as the bottom surface of the base portion 40.

Then, the first back plate 51 of the back plate 50 is fastened to the back surface of the weight scale 10 with bolts, and the second back plate 52 of the back plate 50 is inserted into the receiving recess 32a of the screw nut 32 of the elevating mechanism 30. In this inserted state, when the screw nut 32 is rotated, the U-shaped opening-shaped end portion of the second back plate 52 cannot move relative to the screw nut 32, but the outer peripheral surface of the receiving recess 32a of the screw nut 32 can rotate relative to the end portion of the second back plate 52.

Through the above steps, the installation of the chain tightness measuring device 100 of the present embodiment is completed.

Next, a use state of the chain tightness measuring device 100 according to an embodiment of the present invention will be described with reference to fig. 4.

When measuring the tightness of the conveyor chain in the conveyor chain bed, first, the entire chain tightness measuring device 100 is placed below the chain under test 200, and the chain under test 200 is brought into contact with the stage 10a of the weight scale 10 in the chain tightness measuring device 100.

In a state where the chain 200 to be measured is in contact with the stage 10a, the screw nut 32 of the elevating mechanism 30 is rotated and moved upward with respect to the screw 31. Since the second back plate 52 of the back plate 50 is inserted into the receiving recess 32a of the screw nut 32 so as not to be movable relative thereto, the entire weight scale 10 is moved upward by the back plate 50 as the screw nut 32 is moved upward, and the stage 10a of the weight scale 10 is further subjected to a downward pressure applied by the chain 200 to be measured, and the weight scale 10 measures the pressure in real time.

When the weight scale 10 displays a pressure equivalent to 16kg, the rotation of the screw nut 32 is stopped, the height corresponding to the stage 10a in the weight scale 10 at that time is recorded, and the tightness of the entire chain 200 to be measured is calculated and determined based on the rising height of the chain 200 to be measured at that time (i.e., the height corresponding to the stage 10a in the weight scale 10) and the total length of the chain 200 to be measured.

Specifically, in the field of vehicle automation production, the determination is made based on the following criteria: when the conveyor chain is lifted up with a force corresponding to 16kg, the ratio of the height of the conveyor chain raised to the total length thereof is 1%, it can be determined that the tightness of the conveyor chain is appropriate. Based on this criterion, it is determined whether the tightness of the chain 200 to be measured is appropriate based on the tightness of the entire chain 200 to be measured and calculated by the chain tightness measuring device 100 of the present embodiment, and the tightness is adjusted accordingly according to the actual situation.

For example, when the total length of the chain 200 is 6m, if the lifting height of the chain 200 measured by the scale 20 is 6cm when the weight scale 10 indicates a pressure corresponding to 16kg, it can be determined that the tightness of the chain 200 is appropriate. Similarly, when the total length of the chain 200 is 8m, if the weight scale 10 indicates a pressure of 16kg, and the elevation height of the chain 200 measured by the scale 20 is 8cm, it can be determined that the tightness of the chain 200 is appropriate. When the total length of the chain 200 is 12m, if the lifting height of the chain 200 measured by the scale 20 is 12cm when the weight scale 10 indicates a pressure corresponding to 16kg, it can be determined that the tightness of the chain 200 is appropriate.

According to the chain tightness measuring device 100 of an embodiment of the present invention, since the scale 20 and the urging member including the weight scale 10, the elevating mechanism 30 and the back plate 50 are provided at the same time on the base portion 40 having the flat bottom surface, the elevating mechanism 30 includes the screw rod 31 and the screw nut 32, and the weight scale 10 can be raised together with the screw nut 32 via the back plate 50 as the screw nut 32 is raised relative to the screw rod 31 by rotating, and when the weight scale 10 displays a pressure equivalent to 16kg from the chain 200 to be measured, the lifting height of the chain 200 to be measured at this time is measured by the scale 20, the tightness of the entire chain 200 to be measured can be calculated and judged conveniently, and therefore, compared with the above-mentioned conventional measuring method requiring two operators to operate at the same time, the measuring work of the tightness of the conveying chain can be completed by one operator, manpower and measuring time can be saved by a wide margin.

Further, since the chain tightness measuring device 100 of the present embodiment has the compact configuration as described above, even when the measuring place is limited, the measuring work of the tightness of the conveying chain can be smoothly performed by one operator using the chain tightness measuring device 100, and compared with the conventional measuring method requiring simultaneous operation by two operators, the influence due to the limitation of the measuring place can be effectively reduced, and the application range can be expanded.

Furthermore, in the chain tightness measuring device 100 of the present embodiment, since the scale 20 is detachably fixed to the base portion 40 by bolt fastening, and the first back plate 51 of the back plate 50 is detachably fixed to the back surface of the weight scale 10 by bolt fastening, the second back plate 52 of the back plate 50 is detachably inserted into the receiving recess 32a of the screw nut 32, and the bottom end of the screw 31 is detachably fixed to the base portion 40 by screw connection, the chain tightness measuring device 100 of the present embodiment is easily detached and carried, and in addition, can be conveniently and quickly mounted in use.

In the chain tightness measuring device 100 according to the present embodiment, since the entire chain tightness measuring device 100 is placed below the chain to be measured 200 during use, the weight scale 10 is moved upward by rotating the screw nut 32 of the elevating mechanism 30 until the weight scale 10 displays a pressure equivalent to 16kg, and then the rising height of the chain to be measured 200 at that time is measured by the scale 20, the entire tightness of the chain to be measured 200 can be calculated and determined easily and quickly, and therefore, compared to the conventional measuring method in which the operator lifts the chain to be measured with a force equivalent to 16kg, the potential safety hazard such as the operator's waist being strained can be effectively prevented.

In the conventional measurement method, the operator who observes the scale reading may have to read the scale reading from the side due to the presence of two operators, which may cause a certain reading error. In contrast, in the chain tightness measuring device 100 of the present embodiment, since the measuring operation is performed by one operator, the operator can rotate the screw nut 32 by himself or herself just in front of the chain tightness measuring device 100, and can read the reading of the scale 20 more accurately, thereby improving the accuracy of measuring the tightness of the conveyor chain.

The chain tightness measuring device 100 according to the embodiment of the present invention has been described in detail above, but the present invention is not limited to this, and the chain tightness measuring device of the present invention may be modified as follows, for example.

In the above embodiment, the elevating mechanism 30 is configured by the screw 31 and the screw nut 32, but the present invention is not limited thereto, and the elevating mechanism may be configured by, for example: instead of the above-described screw nut 32, the lifting mechanism includes a screw and a rotation adjusting unit having a rotating nut and a receiving sleeve which is located above the rotating nut and is connected to the rotating nut via a rolling bearing, for example, so that when the rotating nut is turned to lift the rotating nut relative to the screw, the receiving sleeve is lifted only together with the rotating nut without performing a rotating operation. In this configuration, the second back plate 52 of the back plate 50 is detachably fixed to the end surface of the receiving sleeve by, for example, bolt fastening, and thus, when the swivel nut in the swivel adjustment unit of the lifting mechanism is turned, the receiving sleeve is lifted together with the swivel nut, and the weight scale 10 is further lifted together with the swivel nut via the back plate 50 until the weight scale 10 displays a pressure equivalent to 16kg, and the reading of the scale 20 at this time is read, and the tightness of the chain to be measured is calculated and determined.

Further, the lifting mechanism may be configured such that: the lifting mechanism is provided with a handle, a screw rod vertical lifting unit and a lifting carrier platform, when the handle is rotated by an operator, the screw rod vertical lifting unit can correspondingly lift the lifting carrier platform, the second back plate 52 in the back plate 50 fixedly connected with the weight measuring instrument 10 is fixed on the lifting carrier platform or the weight measuring instrument 10 is directly fixed on the lifting carrier platform, the handle is rotated by the operator, so that the weight measuring instrument 10 can be lifted to the weight measuring instrument 10 to display the pressure equivalent to 16kg, and the tightness of the chain to be measured is calculated and judged by reading the reading of the graduated scale 20 at the moment.

That is, the lifting mechanism in the chain tightness measuring device is not particularly limited as long as the weight scale 10 can be moved upward in accordance with the operation of the operator until the weight scale 10 displays a pressure equivalent to 16kg from the chain to be measured. As described above, when the weight scale 10 displays a pressure of 16kg, the tightness of the chain to be measured can be calculated and determined by reading the scale 20 at that time.

In the above embodiment, the structure in which the operator manually operates the lifting mechanism 30 in the chain tightness measuring device 100 to measure the tightness has been described, but the present invention is not limited to this, and the tightness of the chain to be measured may be measured by driving the lifting mechanism to lift the weight scale 10 by controlling the motor by the control device.

In the above embodiment, the scale 20 is used as the measuring means to measure the height of the chain to be measured when the weight scale 10 displays a pressure corresponding to 16kg, but the present invention is not limited to this, and other means such as a laser distance measuring sensor and a vernier caliper may be used to measure the height of the chain to be measured.

In the above embodiment, the back plate 50 is a member having an L-shape in side view and includes the first back plate 51 and the second back plate 52, but is not limited to this, and the back plate in the chain tightness measuring device may be a flat plate-like structure, for example, as long as one end of the back plate can be fixed to the weight scale 10 and the other end thereof can be connected to the lifting mechanism 30 so as not to be movable relative thereto, and the weight scale 10 can be lifted and lowered along with the lifting means (for example, the screw nut 32, the receiving sleeve, the lifting and lowering stage, and the like) of the lifting mechanism 30, and is not particularly limited.

According to the utility model discloses a chain elasticity measuring device compares with the technique in the past, can measure the elasticity of the chain of different specifications by convenient and fast ground.

Further, while the exemplary embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications can be made to the exemplary embodiments of the present invention without substantially departing from the spirit and scope of the present invention. All changes and modifications are therefore intended to be included within the scope of the present invention as defined in the appended claims. The invention is defined by the appended claims, with equivalents of those claims to be included therein.

Claims (9)

1. A chain tightness measuring device is characterized by comprising:

a base part;

a measuring member fixed to one side of the base portion in the left-right direction; and

a biasing member fixed to the other side of the base portion in the left-right direction,

the force application component comprises a weight measuring instrument, a back plate and a spiral lifting mechanism, the weight measuring instrument is used for measuring the pressure applied downwards by the chain to be measured, one end of the back plate is fixed on the weight measuring instrument, the other end of the back plate is connected with the spiral lifting mechanism in a way of being incapable of moving relatively,

the weight measuring instrument and the back plate are lifted together with the lifting of the spiral lifting mechanism.

2. The chain tightness measuring device according to claim 1,

the screw lifting mechanism is provided with a screw rod and a screw nut, the screw nut is in threaded connection with the screw rod, a containing groove is arranged in the midway position of the outer side of the screw nut,

the other end of the back plate has a U-shaped opening shape,

when the screw nut is rotated in a state where the other end of the back plate is inserted into the receiving groove, the receiving groove can be rotated relative to the other end of the back plate and cannot be moved relative thereto.

3. The chain tightness measuring device according to claim 1,

the spiral lifting mechanism is provided with a screw rod and a rotary adjusting unit, the rotary adjusting unit is provided with a rotary nut and a bearing sleeve,

the receiving sleeve is located above the swivel nut and is connected to the swivel nut via a rolling bearing so that the receiving sleeve is lifted and lowered only together with the swivel nut without rotating when the swivel nut is lifted and lowered with respect to the screw by turning the swivel nut,

the other end of the back plate is fixed to the bearing sleeve.

4. The chain tightness measuring device according to claim 1,

the spiral lifting mechanism is provided with a handle, a screw rod vertical lifting unit and a lifting carrying platform, and,

the spiral lifting mechanism comprises: when the handle is rotated, the screw rod vertical lifting unit correspondingly lifts the lifting carrying platform,

the other end of the back plate is fixed on the lifting carrying platform.

5. The chain tightness measuring device according to any one of claims 1 to 4,

the measuring component is any one of a graduated scale, a vernier caliper and a laser ranging sensor.

6. The chain tightness measuring device according to any one of claims 1 to 4,

the back plate is fastened through bolts and detachably fixed to the weight measuring instrument.

7. The chain tightness measuring device according to any one of claims 1 to 4,

the weight measuring instrument is a high-precision digital display weight measuring instrument.

8. The chain tightness measuring device according to claim 7,

and a carrying platform is arranged above the weight measuring instrument.

9. The chain tightness measuring device according to any one of claims 1 to 4,

the spiral lifting mechanism is driven and controlled by a control device.

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