Throttle adjustment tool and throttle valve opening adjustment method

Abstract

To obtain a throttle adjustment jig that can shorten work time in opening adjustment work for a throttle valve, and an opening adjustment method for the throttle valve.SOLUTION: A throttle adjustment jig 1 comprises a plurality of adjustment mechanisms 20. Each of the adjustment mechanisms 20 comprises an input shaft, a transmission part, an output shaft, a measurement part, and a display part. The output shaft can be connected to an opening adjustment member of a throttle valve. The measurement part measures an amount of rotation of the output shaft, and outputs a display value corresponding to the measured amount of rotation of the output shaft, to the display part. The display part displays the display value inputted from the measurement part. Thereby, a worker can digitize and grasp the amount of rotation of the output shaft 50. Therefore, work time in opening adjustment work for the throttle valve can be shortened.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a throttle adjustment jig that adjusts the opening degree of a throttle valve, and a method for adjusting the opening degree of a throttle valve. [Background technology]

[0002] Conventionally, the opening of an opening-adjustable throttle has been adjusted by rotating an adjustment screw (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-139725 Summary of the Invention [Problem to be solved by the invention]

[0004] In conventional aperture adjustment, the amount of rotation of the adjustment screw was determined by the operator's sense. This meant that the actual amount of rotation of the adjustment screw could not be quantitatively determined, and adjustment work took a long time.

[0005] The present disclosure has been made to solve the problems described above, and aims to provide a throttle valve opening adjustment jig and a throttle valve opening adjustment method that can shorten the work time required for adjusting the throttle valve opening. [Means for solving the problem]

[0006] The aperture adjustment jig according to the present disclosure comprises a case and an adjustment mechanism supported by the case, the adjustment mechanism having an input shaft, a transmission unit, an output shaft, a measurement unit, and a display unit, the input shaft is arranged so that one end is exposed to the outside of the case, the output shaft is arranged so that one end is exposed to the outside of the case, the display unit is arranged so that it is exposed to the outside of the case, when a rotational force is applied to one end of the input shaft, the input shaft rotates, the transmission unit transmits the rotational movement of the input shaft to the output shaft, the output shaft is connectable to an opening adjustment member of the aperture valve, the measurement unit measures the amount of rotation of the output shaft and outputs a display value corresponding to the measured amount of rotation of the output shaft to the display unit, and the display unit displays the display value input from the measurement unit. Effect of the Invention

[0007] According to the throttle adjustment jig and throttle valve opening adjustment method of the present disclosure, the amount of rotation of the throttle valve opening adjustment member can be quantified and understood, thereby shortening the work time required for adjusting the throttle valve opening. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a front view showing the aperture adjustment jig according to the first embodiment. [Diagram 2] 2 is a front view showing the front of one adjustment mechanism of the aperture adjustment jig of FIG. 1. [Diagram 3] FIG. 3 is a schematic diagram showing the function of the adjustment mechanism of FIG. 2. [Figure 4] 2 is a perspective view showing the rear side of the aperture adjustment jig in FIG. 1. [Diagram 5] FIG. 2 is a front view of a valve unit using the aperture adjustment jig of FIG. [Figure 6] 2 is a schematic diagram showing a state in which the aperture adjustment jig in FIG. 1 is used. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Embodiment 1 1 is a front view showing an aperture adjustment jig 1 according to embodiment 1. The aperture adjustment jig 1 includes a case 10, six adjustment mechanisms 20, a power supply (not shown), and a power switch (not shown). The six adjustment mechanisms 20, the power supply, and the power switch are supported by the case 10.

[0010] By turning on the power switch, power is supplied from the power source to each adjustment mechanism 20, and each adjustment mechanism 20 is started. That is, by turning on the power switch, the aperture adjustment jig 1 is started.

[0011] A well-known configuration can be applied to the power supply and the power switch. For example, a battery may be used as the power supply. Since the aperture adjustment jig 1 is provided with a power supply, the portability of the aperture adjustment jig 1 is improved.

[0012] Fig. 2 is a front view showing the front of one adjustment mechanism 20 of the aperture adjustment jig 1 of Fig. 1. Fig. 3 is a schematic diagram showing the function of the adjustment mechanism 20 of Fig. 2. The adjustment mechanism 20 has an input shaft 30, a ratchet mechanism 35, a transmission unit 40, an output shaft 50, a measurement unit 60, and a display unit 70.

[0013] The input shaft 30 is a rod-shaped member, and is supported inside the case 10. The input shaft 30 has an axis. The input shaft 30 is rotatable about the axis of the input shaft 30 relative to the case 10. The input shaft 30 is disposed such that one end thereof is exposed to the outside of the case 10.

[0014] A hexagonal hole is provided on the end face of one end of the input shaft 30. A hexagonal wrench, which is a well-known tool, can be inserted into the hexagonal hole. When a rotational force is applied to the hexagonal wrench inserted into one end of the input shaft 30, the input shaft 30 rotates.

[0015] The hole provided in the end face of one end of the input shaft 30 is not limited to a hexagonal shape. The end face of one end of the input shaft 30 may have any shape corresponding to a well-known tool capable of applying a rotational force to the input shaft 30.

[0016] The ratchet mechanism 35 is connected to the input shaft 30. The ratchet mechanism 35 is connected to a transmission unit 40. The ratchet mechanism 35 can transmit the rotational motion of the input shaft 30 to the transmission unit 40.

[0017] The ratchet mechanism 35 is supported inside the case 10. The ratchet mechanism 35 transmits the rotational movement of the input shaft 30 only in a permitted direction to the transmission unit 40. The ratchet mechanism 35 has a ratchet body 35a and a switch 35b.

[0018] The switch 35b is a rod-shaped member. The switch 35b is exposed on the surface of the case 10. The position of the switch 35b can be selected from three preset positions by an operator. The switch 35b is connected to the ratchet body 35a.

[0019] The ratchet body 35a can set the state of the ratchet mechanism 35, which transmits the rotational motion received by the input shaft 30 to the transmission unit 40, to be switchable among three transmission states, i.e., a first transmission state, a second transmission state, and a third transmission state. The ratchet body 35a switches between the three transmission states of the ratchet mechanism 35 according to the position of the switch 35b, and sets it to one of the transmission states.

[0020] The ratchet body 35a can switch the transmission state of the ratchet mechanism 35 by changing the connection state of each component part that constitutes the ratchet body 35a. A well-known mechanism can be applied to the ratchet body 35a. For example, a configuration consisting of a ratchet wheel and a pawl may be applied to the ratchet body 35a.

[0021] The first transmission state of the ratchet mechanism 35 is a state in which only the rotational motion of the input shaft 30 rotating in a first direction is transmitted to the transmission unit 40. The second transmission state of the ratchet mechanism 35 is a state in which only the rotational motion of the input shaft 30 rotating in a second direction opposite to the first direction is transmitted to the transmission unit 40. The third transmission state of the ratchet mechanism 35 is a state in which both the rotational motion of the input shaft 30 when rotating in the first direction and the second direction are transmitted to the transmission unit 40.

[0022] When the ratchet mechanism 35 is in the first transmission state, the rotational motion of the input shaft 30 in the second direction is not transmitted to the transmission unit 40. Therefore, when the ratchet mechanism 35 is in the first transmission state, the transmission unit 40 rotates only in the first direction and does not rotate in the second direction.

[0023] When the ratchet mechanism 35 is in the second transmission state, the rotational motion of the input shaft 30 in the first direction is not transmitted to the transmission unit 40. Therefore, when the ratchet mechanism 35 is in the second transmission state, the transmission unit 40 rotates only in the second direction and does not rotate in the first direction.

[0024] When the ratchet mechanism 35 is in the third transmission state, the rotational motion of the input shaft 30 in both the first and second directions is transmitted to the transmission portion 40 .

[0025] That is, when the transmission state of the ratchet mechanism 35 is the first transmission state, only rotational motion in the first direction is permitted among the rotational motions of the input shaft 30. When the transmission state of the ratchet mechanism 35 is the second transmission state, only rotational motion in the second direction is permitted among the rotational motions of the input shaft 30. When the transmission state of the ratchet mechanism 35 is the third transmission state, rotational motion in both the first and second directions is permitted among the rotational motions of the input shaft 30.

[0026] The ratchet mechanism 35 can generate an impact every time the input shaft 30 rotates a certain angle in the ratchet body 35a. The impact generated by the ratchet mechanism 35 includes at least one of sound and vibration.

[0027] When the input shaft 30 rotates, the operator can hear a "click" and feel vibration. That is, the ratchet mechanism 35 can generate an impact every time the input shaft 30 rotates a certain angle.

[0028] Furthermore, the ratchet mechanism 35 has a configuration that increases the rotational load of the rotational operation of the input shaft 30 every time the input shaft 30 rotates by a certain angle. Therefore, in order to rotate the input shaft 30, it is necessary to apply a rotational force equal to or greater than the increased rotational load to the input shaft 30. A well-known configuration can be applied to the configuration for increasing the rotational load of the ratchet mechanism 35.

[0029] For example, the ratchet body 35a has a gear that rotates with the rotational movement of the input shaft 30, and a repelling member that is repelled by the teeth of the gear. As the input shaft 30 rotates, the gear rotates while the teeth of the gear repel the repelling member.

[0030] The rotation load during the rotation of the gear increases because the repelling member is repelled by the tooth tip, and therefore the rotation load during the rotation of the input shaft 30 for rotating the gear also increases.

[0031] The impact generated by the ratchet mechanism 35 may be an impact generated when the tooth tip of the gear of the ratchet body 35a repels the repelling member. In other words, the configuration for generating the impact of the ratchet mechanism 35 and the configuration for increasing the rotational load of the rotational operation of the input shaft 30 may be the same configuration.

[0032] Furthermore, the mechanism that determines the transmission state of the ratchet mechanism 35 and the configuration that increases the rotational load of the rotational operation of the input shaft 30 each time the input shaft 30 rotates by a certain angle may be the same configuration. For example, in a configuration consisting of a ratchet wheel and a pawl, the configuration in which the ratchet wheel repels the pawl may be the configuration that increases the rotational load of the rotational operation of the input shaft 30.

[0033] The transmission unit 40 is supported inside the case 10. The transmission unit 40 transmits the rotational motion of the input shaft 30, which is transmitted via the ratchet mechanism 35, to the output shaft 50. The transmission unit 40 has a speed change unit 41 and a speed change switch 41a.

[0034] The rotational motion of the input shaft 30 transmitted to the transmission unit 40 is transmitted to the speed change unit 41. The speed change unit 41 changes the transmitted rotational motion and transmits it to the output shaft 50.

[0035] The speed change unit 41 has a function of changing the rotational motion of the input shaft 30 transmitted to the transmission unit 40 into a different rotational motion according to a predetermined constant ratio, and outputting the different rotational motion to the output shaft 50. This constant ratio is called the speed change ratio.

[0036] That is, the transmission unit 41 changes the rotational motion of the input shaft 30 transmitted to the transmission unit 40 into a secondary rotational motion based on a predetermined speed change ratio. The transmission unit 41 transmits the secondary rotational motion to the output shaft 50.

[0037] The gear shift switch 41a is a protruding knob that protrudes outward from a hole provided in the case 10. The position of the gear shift switch 41a can be selected from three preset positions by an operator. The gear shift switch 41a is connected to the gear shift unit 41.

[0038] The transmission unit 41 can select one of three different transmission ratios depending on the position of the transmission switch 41a. The transmission unit 41 changes the rotational motion of the input shaft 30 transmitted to the transmission unit 40 into a secondary rotational motion based on the selected transmission ratio.

[0039] The speed change ratio is not particularly limited. For example, the speed change unit 41 may have three speed change ratios that change the speed of the output shaft 50 to 3.0 degrees, 1.0 degrees, and 0.1 degrees when the input shaft 30 rotates 10.0 degrees.

[0040] The transmission unit 41 is configured by a known mechanism. The transmission switch 41a and the transmission unit 41 are electrically or mechanically connected to each other.

[0041] The output shaft 50 is a rod-shaped member. The output shaft 50 is supported inside the case 10. The rotational motion of the input shaft 30 is transmitted to the output shaft 50 via the transmission unit 40.

[0042] Fig. 4 is a perspective view showing the rear side of the aperture adjustment jig 1 in Fig. 1. The output shaft 50 is arranged so that one end is exposed to the outside of the case 10. One end of the output shaft 50 protrudes toward the outside from a hole provided on the surface of the case 10 opposite to the surface on which the input shaft 30 is exposed.

[0043] The portion of the output shaft 50 protruding outward from the case 10 is a rod-shaped member having a hexagonal cross section. The portion of the output shaft 50 protruding outward from the case 10 can be connected to a throttle valve aperture adjustment member. The throttle valve aperture adjustment member will be described later.

[0044] Returning from Fig. 1 to Fig. 3, the explanation will be continued. The measurement unit 60 is supported inside the case 10. The measurement unit 60 has an operation unit 61 which is a plurality of operation buttons. The operation unit 61 is disposed so as to be exposed to the outside from a hole provided in the surface of the case 10 where the input shaft 30 is exposed.

[0045] The measuring unit 60 measures the amount of rotation of the output shaft 50. A well-known mechanism can be used for the measuring unit 60. For example, a rotary encoder may be used for the measuring unit 60.

[0046] The measuring unit 60 outputs a display value corresponding to the measured amount of rotation of the output shaft 50 to the display unit 70. The display value is, for example, a value obtained by converting the amount of rotation of the output shaft 50 measured by the measuring unit 60 into a value in units of radians. By operating the operating unit 61, the measuring unit 60 can set the display value to a reset value.

[0047] The reset value is a value that is appropriately set by an operator. The reset value is a numerical value including 0 (zero). After the display value is set to the reset value, the measurement unit 60 converts the amount of rotation of the output shaft 50 into a display value based on the display value set to the reset value.

[0048] The display unit 70 is supported by the case 10. The display unit 70 displays the display value input from the measurement unit 60. The display value input from the measurement unit 60 is displayed on the display surface of the display unit 70.

[0049] The display unit 70 is disposed so as to be exposed to the outside of the case 10. The display surface of the display unit 70 is disposed so that the display value is displayed from the surface of the case 10 where the input shaft 30 is exposed toward the outside of the case 10. Although there is no particular limitation to the display unit 70, in the present embodiment 1, it is capable of displaying a three-digit numerical value including a positive / negative sign and one decimal place.

[0050] Next, there will be described a valve unit 100 that uses the aperture adjustment jig 1. Fig. 5 is a front view of the valve unit 100 that uses the aperture adjustment jig 1 of Fig. 1.

[0051] The valve unit 100 includes six throttle valves. The opening of each of the throttle valves can be adjusted by opening adjustment members 101a, 101b, 101c, 101d, 101e, and 101f. End faces of the opening adjustment members 101a, 101b, 101c, 101d, 101e, and 101f are exposed on the surface of the valve unit 100. Here, adjustment of the opening of the throttle valves will be described using one opening adjustment member 101a as an example.

[0052] The opening adjustment member 101a is a rod-shaped member having a screw thread formed therein. A screw hole is formed on the valve unit 100 side. The opening adjustment member 101a is screwed into the screw hole of the valve unit 100.

[0053] The opening degree of the throttle valve is set according to the position of the opening degree adjustment member 101a relative to the valve unit 100. An operator can adjust the opening degree of the throttle valve by rotating the opening degree adjustment member 101a screwed into a screw hole in the valve unit 100 to move the opening degree adjustment member 101a forward or backward relative to the valve unit 100.

[0054] A hexagonal hole is provided on the end face of the aperture adjustment member 101a. The operator inserts a hexagonal wrench into the hexagonal hole and rotates it to move the aperture adjustment member 101a back and forth. This allows the operator to adjust the aperture of the throttle valve. The same is true for the other aperture adjustment members 101b, 101c, 101d, 101e, and 101f.

[0055] Fig. 6 is a schematic diagram showing a use state of the aperture adjustment jig 1 in Fig. 1. The aperture adjustment jig 1 is arranged so as to cover the aperture adjustment members 101a, 101b, 101c, 101d, 101e, and 101f of the valve unit 100. The output shafts 50 of the aperture adjustment jig 1 are connected to the corresponding aperture adjustment members 101a, 101b, 101c, 101d, 101e, and 101f, respectively.

[0056] 4, the portion of each output shaft 50 that protrudes outside the case 10 is rod-shaped with a hexagonal cross section. Each output shaft 50 can be inserted into a hexagonal hole provided in an end surface of the opening adjustment members 101a, 101b, 101c, 101d, 101e, and 101f. That is, the end of the output shaft 50 is inserted into the hexagonal hole provided in the end surface of each of the opening adjustment members 101a, 101b, 101c, 101d, 101e, and 101f, respectively.

[0057] As shown in Fig. 5, the positions of the opening adjustment members 101a, 101b, 101c, 101d, 101e, and 101f in the valve unit 100 are not aligned on a straight line. Therefore, as shown in Fig. 4, each output shaft 50 is disposed so as to correspond to the positions of the opening adjustment members 101a, 101b, 101c, 101d, 101e, and 101f.

[0058] That is, each of the multiple output shafts 50 can be simultaneously connected to the corresponding opening degree adjusting members 101a, 101b, 101c, 101d, 101e, and 101f.

[0059] Next, a method for adjusting the opening degree of the throttle valve of the valve unit 100 using the throttle adjustment jig 1 will be described.

[0060] The valve unit 100 is used in a hydraulic mechanism. A hydraulic mechanism is a mechanical mechanism that operates by hydraulic pressure, such as a hydraulic elevator, a hydraulic lifter, or a hydraulic press.

[0061] For hydraulic mechanisms, it is necessary to periodically check the operating conditions of hydraulically operated components, such as their operating speed and acceleration. If the operating conditions of the hydraulic mechanism components do not conform to the specified operating conditions during the operation check, the opening of the throttle valve related to the operation of the components is adjusted so that the operating conditions of the components conform to the specified operating conditions.

[0062] For example, if the operating speed of a member is outside a specified speed range, the opening of a throttle valve that operates that member is adjusted to bring the operating speed of the member into the specified speed range.

[0063] In the present embodiment 1, a method for adjusting the opening degree of the throttle valve of the valve unit 100 using the throttle adjustment jig 1 will be described for the above example.

[0064] First, the worker prepares the aperture adjustment jig 1. The worker turns on the power switch of the aperture adjustment jig 1 to start up the aperture adjustment jig 1. After that, the worker places the aperture adjustment jig 1 on the valve unit 100 so as to cover the opening adjustment members 101a, 101b, 101c, 101d, 101e, and 101f.

[0065] The output shafts 50 of the aperture adjustment jig 1 are connected to aperture adjustment members 101a, 101b, 101c, 101d, 101e, and 101f, respectively.

[0066] The worker may fix the aperture adjustment jig 1 to the valve unit 100 using a fastener such as a belt, tape, or clip (not shown) as necessary.

[0067] Next, the operator operates the operating unit 61 of each adjustment mechanism 20 to set the display value of each adjustment mechanism 20 to a reset value. For example, the display value is set to 0.0.

[0068] After that, the worker checks the operating state of the hydraulic mechanism. For example, assume that the measured operating speed of the first member is not within the specified operating speed range. In this case, the worker adjusts the aperture of the throttle valve related to the operating speed of the first member in a direction to increase the aperture of the throttle valve. The aperture adjustment member 101a is used to adjust the aperture of the throttle valve related to the operating speed of the first member.

[0069] At this time, the worker compares the measured operating speed of the first member with the specified operating speed and empirically recognizes that the aperture adjustment member 101a of the throttle valve needs to be loosened, for example, by about 1.0 degree. The worker connects a tool to the input shaft 30 of the adjustment mechanism 20 connected to the aperture adjustment member 101a and rotates it.

[0070] When rotating the input shaft 30 of the adjustment mechanism 20 connected to the opening adjustment member 101a, the operator sets the switch 35b and the speed change switch 41a to suitable positions as appropriate. The operator can appropriately select the transmission state of the ratchet mechanism 35 and the speed change ratio of the speed change unit 41 that are suitable for the opening adjustment.

[0071] Based on experience, the operator rotates the input shaft 30 until the display value of the adjustment mechanism 20 connected to the opening adjustment member 101a changes from 0.0 to -1.0. When the display value has a negative sign, it means that the output shaft 50 has rotated in the direction that loosens the opening adjustment member 101a.

[0072] The operator checks the operating state of the hydraulic mechanism again. For example, if the measured operating speed of the first member exceeds the specified operating speed range, the operator adjusts the throttle valve opening to reduce the opening.

[0073] At this time, the operator determines the rotation amount of the opening adjustment member 101a by comparing the measured movement speed of the first member with the specified movement speed and taking into consideration the fact that the opening adjustment member 101a was previously rotated from 0.0 to -1.0. For example, the operator recognizes from experience that it is sufficient to rotate the opening adjustment member 101a until the displayed value changes from -1.0 to -0.8.

[0074] The operator rotates the opening degree adjustment member 101a until the display value of the adjustment mechanism 20 connected to the opening degree adjustment member 101a changes from -1.0 to -8.0. After that, the operator checks the operating state of the hydraulic mechanism again.

[0075] For example, it is assumed that the measured movement speed of the first member falls within a prescribed movement speed range, and the operator ends the opening adjustment of the opening adjustment member 101a related to the first member.

[0076] Thereafter, the operator performs similar adjustments to the opening degrees of the other opening degree adjusting members 101b, 101c, 101d, 101e, and 101f as necessary, and then ends the adjustments.

[0077] The worker removes the aperture adjustment jig 1 from the valve unit 100 and turns off the power switch of the aperture adjustment jig 1. This completes the opening adjustment work.

[0078] According to the throttle adjustment jig 1 of the first embodiment, the measuring unit 60 measures the amount of rotation of the output shaft 50 and outputs a display value corresponding to the measured amount of rotation of the output shaft 50 to the display unit 70, and the display unit 70 displays the display value input from the measuring unit 60. Therefore, the worker can grasp the amount of rotation of the output shaft 50 in a numerical value. Therefore, the work time in the throttle valve opening adjustment work can be shortened. In addition, since the adjustment amount of the opening can be grasped as a numerical value, the variation in the adjustment amount by the worker can be suppressed. In addition, since the adjustment amount before the adjustment can be grasped as a numerical value, even when the opening is returned to the adjustment amount before the adjustment, the opening can be returned reliably. Therefore, the work time in the throttle valve opening adjustment work can be shortened.

[0079] The opening degree of the throttle valve can be indicated by a numerical value corresponding to the indicated value, for example, if the indicated value is an angle, the numerical value can be indicated as an angle. That is, in order to set the throttle valve to a desired opening degree, the opening degree can be indicated by the rotation angle, i.e., how many degrees each of the opening degree adjustment members 101a, 101b, 101c, 101d, 101e, and 101f must be rotated. This makes it possible to shorten the time required for adjusting the opening degree of the throttle valve.

[0080] According to the throttle adjustment jig 1 of the first embodiment, the adjustment mechanism 20 further has a ratchet mechanism 35, which can transmit to the transmission section 40 only the rotational motion of the input shaft 30 in a permitted direction. Therefore, even if an unintended rotational motion in the reverse direction is imparted to the input shaft 30 by an operator, the rotational motion in the reverse direction can be prevented from being transmitted to the output shaft 50. This makes it possible to shorten the time required for adjusting the opening degree of the throttle valve.

[0081] According to the throttle adjustment jig 1 of the first embodiment, the ratchet mechanism 35 can generate an impact every time the input shaft 30 rotates by a certain angle. Therefore, the worker can easily rotate the input shaft 30 by a certain angle by feeling the impact. Therefore, the work time required for adjusting the opening degree of the throttle valve can be shortened.

[0082] According to the throttle adjustment jig 1 of the first embodiment, the transmission unit 40 has a speed change unit 41, and the speed change unit 41 changes the rotational motion of the input shaft 30 transmitted to the transmission unit 40 into a secondary rotational motion based on a predetermined speed change ratio, and transmits the secondary rotational motion to the output shaft 50. Therefore, the worker can transmit the rotational motion to the output shaft 50 with a secondary rotational motion that is smaller than the rotational motion imparted to the input shaft 30, for example. Therefore, it is possible to impart a minute rotational motion to the aperture adjustment members 101a, 101b, 101c, 101d, 101e, and 101f. This makes it easier to perform delicate throttle valve aperture adjustment work, and shortens the work time required for throttle valve aperture adjustment work.

[0083] According to the throttle adjustment jig 1 of the first embodiment, the transmission unit 40 further has a speed change switch 41a, and the transmission unit 41 can select one of a plurality of different speed change ratios depending on the position of the speed change switch 41a. The transmission unit 41 also changes the rotational motion of the input shaft 30 transmitted to the transmission unit 40 into a secondary rotational motion based on the selected speed change ratio. Therefore, the worker can use a plurality of speed change ratios. This makes it easier to adjust the throttle valve opening, and shortens the time required for the throttle valve opening adjustment work.

[0084] According to the throttle adjustment jig 1 of the first embodiment, the measuring unit 60 can set the display value to a reset value. Therefore, the worker can set the display value to a reset value that is the worker's desired value during work. This eliminates the need for the worker to perform tasks such as transcription to store the display value during work. This makes it possible to shorten the work time required for adjusting the opening degree of the throttle valve.

[0085] The throttle adjustment jig 1 according to the first embodiment is provided with a plurality of adjustment mechanisms 20. Therefore, the opening adjustment of a plurality of throttle valves can be performed using one throttle adjustment jig 1. Therefore, there is no need to prepare a plurality of throttle adjustment jig 1. This simplifies the throttle valve opening adjustment work and its preparation, and shortens the work time for the throttle valve opening adjustment work.

[0086] According to the throttle adjustment jig 1 of the first embodiment, each of the multiple output shafts 50 can be simultaneously connected to multiple aperture adjustment members 101a, 101b, 101c, 101d, 101e, and 101f. Therefore, aperture adjustment of multiple throttle valves can be performed simultaneously by the throttle adjustment jig 1. This makes it possible to shorten the work time required for adjusting the aperture of the throttle valve.

[0087] The throttle valve aperture adjustment method according to the first embodiment includes a step of connecting the output shaft 50 of the throttle adjustment jig 1 to the throttle valve aperture adjustment members 101a, 101b, 101c, 101d, 101e, and 101f, and a step of rotating the input shaft 30 to adjust the aperture of the throttle valve. Therefore, by checking the display value of the throttle adjustment jig 1, the worker can quantitatively grasp how much rotation has been given to the aperture adjustment member. This can reduce the work of transcription for storing the display value during the work. Therefore, the work time for adjusting the aperture of the throttle valve can be shortened.

[0088] In the first embodiment, the aperture adjustment jig 1 is provided with six adjustment mechanisms 20. However, this is not limited to this. The number of adjustment mechanisms 20 can be changed appropriately depending on the number of opening adjustment members that the valve unit 100 being used has. For example, one adjustment mechanism 20 may be provided. Also, a number of adjustment mechanisms 20 other than six may be provided.

[0089] In the first embodiment, the adjustment mechanism 20 has a ratchet mechanism 35. However, this is not limited to this. The adjustment mechanism 20 may transmit the rotational motion of the input shaft 30 directly to the transmission unit 40 without having the ratchet mechanism 35.

[0090] In the first embodiment, the speed change unit 41 can select one of three speed change ratios. However, this is not limited to this. There may be only one speed change ratio. Also, one speed change ratio may be selected from a number of speed change ratios other than three.

[0091] In the first embodiment, three speed change ratios are set so that when the input shaft 30 rotates 10.0 degrees, the output shaft 50 rotates 3.0 degrees, 1.0 degrees, and 0.1 degrees. However, the speed change ratios are not limited to these. The speed change ratios can be appropriately selected.

[0092] In the first embodiment, the transmission unit 40 of the adjustment mechanism 20 has the speed change unit 41 and the speed change switch 41a. However, this is not limited to this. The transmission unit 40 may transmit the rotational motion of the input shaft 30 or the rotational motion of the ratchet mechanism 35 directly to the output shaft 50 without having the speed change unit 41 and the speed change switch 41a.

[0093] In the first embodiment, the display unit 70 can display a positive / negative sign and a three-digit number including one decimal place. However, this is not limited to this. The number of display digits, the positive / negative sign display, and the number of display digits after the decimal point of the display unit 70 can be appropriately selected.

[0094] In the first embodiment, the measuring unit 60 converts the amount of rotation of the output shaft 50 into a display value in units of radians. However, this is not limited to this. The unit system in which the display value is output can be appropriately selected. Also, for example, the display value may be output as a dimensionless number.

[0095] In the first embodiment, the cross-sectional shape of the output shaft 50 at the portion protruding outward from the case 10 is a hexagon. However, this is not limited to this. The cross-sectional shape of the output shaft 50 at the portion protruding outward from the case 10 may be any shape that corresponds to a well-known tool that can impart rotational motion to the opening adjustment members 101a, 101b, 101c, 101d, 101e, and 101f.

[0096] Moreover, in the first embodiment, the aperture adjustment jig 1 includes a power supply. However, this is not limited to this. For example, the aperture adjustment jig 1 may not include a power supply and may receive power from an external power supply via a power cable. This reduces the weight of the aperture adjustment jig 1 and improves the portability of the aperture adjustment jig 1. [Explanation of symbols]

[0097] 1 Aperture adjustment jig, 10 Case, 20 Adjustment mechanism, 30 Input shaft, 35 Ratchet mechanism, 35a Ratchet body, 35b Switch, 40 Transmission section, 41 Speed ​​change section, 41a Speed ​​change switch, 50 Output shaft, 60 Measurement section, 61 Operation section, 70 Display section, 100 Valve unit, 101a, 101b, 101c, 101d, 101e, 101f Opening adjustment member.

Claims

1. Case and an adjustment mechanism supported by the case; Equipped with The adjustment mechanism includes: The device has an input shaft, a transmission unit, an output shaft, a measurement unit, and a display unit, the input shaft is disposed so that one end thereof is exposed to the outside of the case, the output shaft is disposed so that one end is exposed to the outside of the case, The display unit is disposed so as to be exposed to the outside of the case, When a rotational force is applied to the one end of the input shaft, the input shaft rotates, The transmission unit transmits the rotational motion of the input shaft to the output shaft, The output shaft is connectable to an aperture adjustment member of a throttle valve, the measurement unit measures an amount of rotation of the output shaft and outputs a display value corresponding to the measured amount of rotation of the output shaft to the display unit; The display unit displays the display value input from the measurement unit. A throttle adjustment jig that can be placed in a valve unit including the throttle valve and can be removed from the valve unit.

2. The transmission unit has a speed change unit, The transmission unit changes the rotational motion of the input shaft transmitted to the transmission unit into a secondary rotational motion based on a predetermined speed change ratio, and transmits the secondary rotational motion to the output shaft. The aperture adjustment jig according to claim 1 .

3. The transmission unit further includes a speed change switch, The shifting unit may select one of a plurality of different shifting ratios according to a position of the shifting switch, The speed change unit changes the rotational motion of the input shaft transmitted to the transmission unit into the secondary rotational motion based on the selected speed change ratio. The aperture adjustment jig according to claim 2.

4. A case, an adjustment mechanism supported by the case; Equipped with The adjustment mechanism includes: The device has an input shaft, a transmission unit, an output shaft, a measurement unit, and a display unit, the input shaft is disposed so that one end thereof is exposed to the outside of the case, the output shaft is disposed so that one end is exposed to the outside of the case, The display unit is disposed so as to be exposed to the outside of the case, When a rotational force is applied to the one end of the input shaft, the input shaft rotates, The transmission unit transmits the rotational motion of the input shaft to the output shaft, The output shaft is connectable to an aperture adjustment member of a throttle valve, the measurement unit measures an amount of rotation of the output shaft and outputs a display value corresponding to the measured amount of rotation of the output shaft to the display unit; The display unit displays the display value input from the measurement unit, The transmission unit has a speed change unit, the transmission unit changes the rotational motion of the input shaft transmitted to the transmission unit into a secondary rotational motion based on a predetermined speed change ratio, and transmits the secondary rotational motion to the output shaft; The transmission unit further includes a speed change switch, The shifting unit may select one of a plurality of different shifting ratios according to a position of the shifting switch, The speed change unit changes the rotational motion of the input shaft transmitted to the transmission unit into the secondary rotational motion based on the selected speed change ratio. Aperture adjustment jig.

5. The adjustment mechanism further includes a ratchet mechanism. The ratchet mechanism can transmit the rotational movement of the input shaft to the transmission unit only in an allowed direction. The aperture adjustment jig according to any one of claims 1 to 4.

6. The ratchet mechanism can generate an impact every time the input shaft rotates by a certain angle. The aperture adjustment jig according to claim 5.

7. The measurement unit can set the display value to a reset value. The aperture adjustment jig according to any one of claims 1 to 6.

8. A plurality of the adjustment mechanisms are provided. The aperture adjustment jig according to any one of claims 1 to 7.

9. Each of the plurality of output shafts is capable of being simultaneously connected to a plurality of the opening degree adjustment members. The aperture adjustment jig according to claim 8.

10. A step of preparing an aperture adjustment jig according to any one of claims 1 to 9; a step of connecting the output shaft of the throttle adjustment jig to the opening adjustment member of the throttle valve; rotating the input shaft to adjust the opening degree of the throttle valve; The method for adjusting the opening degree of a throttle valve comprises:

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