Visualized creep pre-release device and method for locomotive diesel generator set rubber vibration isolator

Abstract

The present application relates to the technical field of vibration isolation device installation and rubber creep deformation, and particularly relates to a locomotive diesel generator set rubber vibration isolator visual creep pre-release device. The locomotive diesel generator set rubber vibration isolator visual creep pre-release device comprises a base, a force applying mechanism and a pressure detection and visualization mechanism. The upper part of the base is used for placing the rubber vibration isolator. The force applying mechanism is configured to apply a downward force to the rubber vibration isolator, and the size of the applied force is adjustable. The pressure detection and visualization mechanism is arranged on the force applying mechanism and is used for detecting the pressure applied by the force applying mechanism in real time and displaying the pressure value. Through the above arrangement, the present application can at least solve the technical problems of high cost and low use efficiency of the existing rubber vibration isolator creep pre-release device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vibration isolation device installation and rubber creep deformation, and particularly relates to a visual creep pre-release device and method for a locomotive diesel generator set rubber vibration isolator. BACKGROUND

[0002] In order to reduce the vibration and noise generated by the diesel generator set during operation, the diesel generator set of the internal combustion locomotive is usually installed on the locomotive chassis through a certain number of rubber vibration isolators. The rubber vibration isolators can effectively absorb vibration energy and reduce the vibration influence between the diesel generator set and the locomotive.

[0003] When subjected to pressure, the rubber vibration isolator will be compressed and deformed under the action of pressure load. The compression deformation usually coexists with two types, one is elastic deformation, that is, reversible deformation in which the compression amount can be restored after the load is removed, and the other is creep deformation, that is, irreversible deformation in which the compression amount cannot be restored after the load is removed, which is usually referred to as "creep".

[0004] Creep is an inherent property of the rubber vibration isolator. Compared with elastic deformation, the process from creep initiation to complete release state (the state of finally reaching the irreversible compression amount corresponding to the load under the action of a given load) usually takes more than 48 hours, and under different loads, the creep process time and the complete release state of the rubber vibration isolator are different. In addition, due to the certain fluctuation of the rubber vulcanization process of the rubber vibration isolator, the creep characteristics of the same type of rubber vibration isolator products also have certain differences. Even under the same load, the complete release state of the same type of rubber vibration isolator also has certain differences.

[0005] If the creep release is not performed before the adjustment of the diesel generator set rubber vibration isolator, after the diesel generator set runs for a period of time, the rubber vibration isolator will be further released due to creep and will be of different heights, which will cause the overall height of the diesel generator set to decrease, not only affecting the centering of the connection of the diesel generator set and the locomotive auxiliary system pipeline, but also causing the diesel generator set base to not be in the same ideal plane, and cannot guarantee the stable and reliable operation of the diesel generator set.

[0006] Therefore, before the adjustment of the locomotive diesel generator set vibration isolator, the rubber vibration isolator creep pre-release must be performed, and there are two key prerequisites for the rubber vibration isolator creep pre-release: first, the rubber vibration isolator needs to bear the same pressure load as the weight of the diesel generator set actually required to be supported, and second, the rubber vibration isolator needs to be loaded for at least 48 hours.

[0007] The technical scheme of the prior art one is as follows Figure 1The diesel generator set A is seated on the rubber vibration isolator B, the rubber vibration isolator B bears the actual weight of the diesel generator set A, and the rubber vibration isolator B is left to stand for more than 48 hours to release the creep, and then the rubber vibration isolator B is adjusted, and the auxiliary system pipeline is connected. However, the prior art has the following disadvantages: (1) low efficiency. Because the rubber vibration isolator adjustment, the diesel generator set and the locomotive auxiliary system pipeline connection and other operation contents can only be carried out after the rubber vibration isolator creep is completely released, during the 48-hour standing process, the operator can only passively wait and cannot carry out the next stage process, which greatly affects the production efficiency. (2) Poor universal applicability. The existing technology one is equivalent to using the diesel generator set as the load for pre-releasing the creep of the rubber vibration isolator. However, for a locomotive, a diesel generator set is usually matched with only one type of rubber vibration isolator, and the number of applications is fixed, and the installation interface is not universal. This limitation determines that the rubber vibration isolator can only use its matched diesel generator set as the load for pre-releasing the creep, and the universal applicability is poor. (3) Lack of compression value input required for formal installation and adjustment of the vibration isolator. The existing technology one only simply realizes the pre-release of the creep, and does not transfer the compression value and uniformity value of the vibration isolator to the formal installation of the vibration isolator.

[0008] The technical scheme of the prior art two is as follows Figure 2As shown, the counterweight A with the weight equivalent to the diesel generator set is seated on the rubber vibration isolator B to make the rubber vibration isolator B simulate the actual weight of the diesel generator set, and the rubber vibration isolator B is left to release the creep for more than 48 hours, and then the rubber vibration isolator B is installed at the bottom of the diesel generator set, and the rubber vibration isolator B is adjusted and the auxiliary system pipeline is connected. The prior art has the following defects: (1) high cost. The weight of the domestic locomotive diesel generator set is usually between 4000kg and 34000kg, and the counterweight is only suitable for small and medium tonnage diesel generator sets. Considering the hoisting tool of the counterweight, the design of the counterweight fixing and other requirements, even if the cheapest steel is used to manufacture the counterweight, the final cost of the counterweight will be tens of thousands of yuan to hundreds of thousands of yuan. (2) poor flexibility. One of the key prerequisites for the creep pre-release of the rubber vibration isolator is that it needs to bear the same pressure load as the actual weight of the diesel generator set it needs to support, which means that a weight specification of the counterweight can only correspond to the rubber vibration isolator of one diesel generator, unless the enterprise designs the counterweight according to the existing diesel generator set product specifications, which undoubtedly further increases the cost. (3) poor observability. From the perspective of operational convenience, the profile of the counterweight cannot be too large, so there is a difference between the distribution position of the rubber vibration isolator at the bottom of the counterweight and the actual distribution position of the rubber vibration isolator at the bottom of the diesel generator set. Therefore, the use of the counterweight for the creep pre-release of the rubber vibration isolator cannot directly and continuously monitor the load size of each rubber vibration isolator, and there is a risk of uneven and too large or too small load of the rubber vibration isolator. (4) lack of compression value input required for formal installation and adjustment of the vibration isolator. The existing technology only simply realizes the creep pre-release, and does not transfer the compression value and uniformity value of the vibration isolator to the formal installation of the vibration isolator.

[0009] Therefore, the prior art still needs to be improved. SUMMARY

[0010] Therefore, the present application provides a locomotive diesel generator set rubber vibration isolator visual creep pre-release device and method, which at least can solve the technical problems of high cost and low efficiency of the existing rubber vibration isolator creep pre-release device.

[0011] The first aspect of the present application provides a locomotive diesel generator set rubber vibration isolator visual creep pre-release device, which comprises a base, a force applying mechanism and a pressure detection and visualization mechanism. The upper part of the base is used for placing the rubber vibration isolator. The force applying mechanism is configured to apply a downward force to the rubber vibration isolator, and the size of the applied force is adjustable. The pressure detection and visualization mechanism is arranged on the force applying mechanism and is used for real-time detection of the pressure applied by the force applying mechanism and display of the pressure value.

[0012] In some embodiments, the circumferential edge of the base is uniformly distributed with a plurality of threaded holes. The force applying mechanism comprises a top cover and a force applying member. The top cover is detachably arranged above the rubber isolator, and the circumferential edge of the top cover is arranged with a plurality of circular holes corresponding to the plurality of threaded holes. The force applying member comprises a plurality of pre-tightening bolts, each of which is inserted into a circular hole and has a lower end threadedly connected with a threaded hole.

[0013] In some embodiments, each pre-tightening bolt is arranged with a scale indicating the sinking depth of the pre-tightening bolt.

[0014] In some embodiments, the top cover comprises a bottom plate and a top plate. The top plate is arranged on the bottom plate and connected by a connecting member. A cavity is arranged between the top plate and the bottom plate. The pressure detection and visualization mechanism comprises a strain gauge sensor, a visualization module and an acquisition and transmission cable. The strain gauge sensor is arranged in the cavity, the visualization module is arranged on the top plate and used to display the pressure value. The acquisition and transmission cable is configured to electrically connect the strain gauge sensor and the visualization module.

[0015] In some embodiments, the locomotive diesel generator set rubber isolator visualized creep pre-release device further comprises a limiting mechanism arranged on the base and distributed along the circumference of the rubber isolator, for limiting the horizontal position of the rubber isolator.

[0016] In some embodiments, the upper part of the base is a plane, and the rubber isolator is arranged at the center of the base. A plurality of first sliding groove groups are uniformly distributed around the center of the base. The limiting mechanism comprises a plurality of limiting plates and a fixing assembly. Each limiting plate is arranged above a first sliding groove group. Each limiting plate is arranged with a second sliding groove group opposite to the first sliding groove group. The fixing assembly penetrates the first sliding groove group and the second sliding groove group. The limiting plate can be adjusted to the distance from the center of the base under the limitation of the first sliding groove group and the second sliding groove group. The fixing assembly is configured to fix the limiting plate and the base after the position of the limiting plate is determined.

[0017] In some embodiments, a reference circle is made with the center of the base as the center. The first sliding groove group comprises two parallel first sliding grooves, and the second sliding groove group comprises two parallel second sliding grooves. The extension direction of each first sliding groove and each second sliding groove is parallel to the radial line of the reference circle.

[0018] In some embodiments, the fixing assembly comprises a locking bolt and a locking nut. The locking bolt penetrates the first sliding groove and the second sliding groove from bottom to top in sequence, and the locking nut threadedly cooperates with the locking bolt.

[0019] In some embodiments, the upper surface of the base is a square, and the corners are arranged with chamfers. The threaded holes are four, distributed at the four corners of the base. The first sliding groove groups are four, each of which is between two adjacent circular holes.

[0020] In some embodiments, the upper and lower surfaces of the bottom plate of the top cover are square, and the corners are chamfered. The top plate of the top cover is aligned with the outer contour of the bottom plate, and there are four round holes distributed in the four corners of the top cover. There are four strain gauge sensors, and the four strain gauge sensors are respectively arranged in the four corners of the top cover. The acquisition transmission cable is connected to the interface of the visualization module after the four strain gauge sensors are connected in series.

[0021] In some embodiments, the force applying mechanism can further include one or more combinations of hydraulic drive mechanism, pneumatic device, gear rack device.

[0022] The second aspect of the present application provides a locomotive diesel generator set rubber vibration isolator visual creep pre-release method, based on the above-mentioned locomotive diesel generator set rubber vibration isolator visual creep pre-release device implementation, comprising the following steps:

[0023] S1, the rubber vibration isolator is placed on the upper part of the base;

[0024] S2, the force applying mechanism is used to apply downward force to the rubber vibration isolator;

[0025] S3, when the pressure detection and visualization mechanism detects that the pressure value applied by the force applying mechanism reaches the preset pressure value, it starts to stand still, and the pressure value change is monitored in real time during the standing still process;

[0026] S4, when the pressure detection and visualization mechanism detects that the pressure value decreases, the action height of the rubber vibration isolator is adjusted to maintain the pressure value at the preset size;

[0027] S4, after the standing still is completed, the compression degree of the rubber vibration isolator is obtained.

[0028] The beneficial effects of the present application are: before the diesel generator set is installed, the rubber vibration isolator creep pre-release can be performed in advance by using the present application scheme, and the pressure applied to the rubber vibration isolator is adjusted by using the force applying mechanism, which has simple structure, lower cost, high flexibility and smaller space occupation compared with directly using the diesel generator set or the counterweight block with weight equivalent to the diesel generator set for creep release operation, and can meet the creep pre-release requirements of multiple and various rubber vibration isolators. By setting the pressure detection and visualization mechanism, the load pressure value of the rubber vibration isolator can be displayed in real time. During the creep release process, the pressure value can be monitored and adjusted regularly by the operator, and after the release is completed, the stock can be taken out at any time, which is convenient for the operator to monitor and adjust. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only aim to some embodiments of the present application, and for those skilled in the art, other embodiments can be obtained based on these accompanying drawings without creative effort.

[0030] Figure 1 A schematic diagram of a rubber vibration isolator creep pre-release device of prior art 1;

[0031] Figure 2 A schematic diagram of a rubber vibration isolator creep pre-release device of prior art 2;

[0032] Figure 3 A structure schematic diagram of a visual creep pre-release device of a locomotive diesel generator set rubber vibration isolator provided by an embodiment of the present application;

[0033] Figure 4 A structure exploded view of a top cover provided by an embodiment of the present application;

[0034] Figure 5 A structure schematic diagram of a visual module provided by an embodiment of the present application;

[0035] Figure 6 A front view of a visual module provided by an embodiment of the present application;

[0036] Figure 7 An assembly schematic diagram of a rubber vibration isolator provided by an embodiment of the present application;

[0037] Figure 8 An assembly schematic diagram of a limiting mechanism provided by an embodiment of the present application;

[0038] Figure 9 An assembly schematic diagram of a top cover provided by an embodiment of the present application;

[0039] Figure 10 An assembly diagram of a pre-tightening bolt provided by an embodiment of the present application;

[0040] Figure 11 An adjustment schematic diagram of the pre-tightening bolt in a force applying process provided by an embodiment of the present application.

[0041] Explanation of reference signs:

[0042] 1, base; 2, limiting plate; 3, locking bolt; 4, locking nut; 5, pre-tightening bolt; 6, top cover; 7, top plate; 8, bottom plate; 9, connecting piece; 10, strain gauge sensor; 11, acquisition and transmission cable; 12, visualization module; 13, rubber vibration isolator; 14, first sliding groove; 15, second sliding groove; 16, round hole; 17, threaded hole. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical scheme and advantages of the present application clearer, the embodiments of the present application are further described in detail below with reference to the drawings.

[0044] It should be noted that all the expressions of "first" and "second" in the embodiments of the present application are used to distinguish two same name non-identical entities or non-identical parameters, and the "first" and "second" are only for the convenience of description, and should not be understood as a limitation of the embodiments of the present application. The subsequent embodiments will not be described one by one.

[0045] The first aspect of the present application provides a locomotive diesel generator set rubber vibration isolator visualized creep pre-release device, as shown in Figure 3 The upper part of the base 1 is used for placing the rubber vibration isolator 13. The force applying mechanism is configured to apply a downward force to the rubber vibration isolator 13, and the size of the applied force is adjustable. The pressure detection and visualization mechanism is arranged on the force applying mechanism, which is used to detect the pressure applied by the force applying mechanism in real time and display the pressure value.

[0046] Compared with the prior art, the rubber vibration isolator 13 creep pre-release can be performed in advance before the diesel generator set is installed, and the pressure applied to the rubber vibration isolator 13 is adjusted by the force applying mechanism. The structure is simple, compared with directly using the diesel generator set or the counterweight block with the weight equivalent to the diesel generator set for creep release operation, the cost of the force applying mechanism of the present application is lower, the flexibility is high, and the occupied space is smaller. It can meet the creep pre-release requirements of multiple and various rubber vibration isolators 13. By setting the pressure detection and visualization mechanism, the load pressure value of the rubber vibration isolator 13 can be displayed in real time. During the creep release process, the operator can monitor and adjust the pressure value regularly, and after the release is completed, the stock can be used at any time, which is convenient for the operator to monitor and adjust.

[0047] In some embodiments, the circumferential edge of the base 1 is uniformly distributed with a plurality of threaded holes 17. The force applying mechanism includes a top cover 6 and force applying members. The top cover 6 is detachably arranged above the rubber vibration isolator 13, and the circumferential edge of the top cover 6 is arranged with a plurality of round holes 16 corresponding to the plurality of threaded holes 17. The force applying members include a plurality of pre-tightening bolts 5, each of which is inserted into a round hole 16 and has a lower end threadedly connected with a threaded hole 17. Specifically, after the rubber vibration isolator 13 is placed on the base 1, the top cover 6 is arranged above the rubber vibration isolator 13, then the pre-tightening bolts 5 are screwed into the threaded holes 17, and the depth of the pre-tightening bolts 5 is adjusted according to the required pressure. The pre-tightening force of the pre-tightening bolts 5 covers a wide range, for example, under the premise of ensuring that the pre-tightening bolts 5 can be repeatedly used, the upper limit value of the theoretical pre-tightening force of a single M20, 10.9 grade pre-tightening bolt 5 corresponds to a weight of 1900 kg, and the upper limit value of the theoretical pre-tightening force of four pre-tightening bolts 5 corresponds to a total weight of 7600 kg, which can completely cover the weight of domestic locomotive diesel generator sets.

[0048] In some embodiments, a scale (not shown in the figure) is arranged on each pre-tightening bolt 5, and the scale is arranged at the lower end of the pre-tightening bolt 5 to indicate the sinking depth of the pre-tightening bolt 5. Specifically, on the one hand, the scale can verify whether the force applied by each pre-tightening bolt 5 is uniform. If there is a difference in the sinking scale between the plurality of pre-tightening bolts 5, the sinking depth of one or more pre-tightening bolts 5 can be appropriately adjusted to make the force applied to the rubber vibration isolator 13 uniform. On the other hand, the scale value change can reflect the compression value of the rubber vibration isolator 13 at each position. By reading the final sinking scale value of each pre-tightening bolt 5 during the whole process of pre-releasing compression of creep, the creep pre-release height value of each rubber vibration isolator 13 can be determined, and a rubber vibration isolator 13 with a suitable thickness of a gasket can be directly prepared according to the height value, so as to facilitate the formal installation of the rubber vibration isolator 13 under the diesel generator set.

[0049] In some embodiments, as shown in Figure 4 The top cover 6 includes a bottom plate 8 and a top plate 7, both of which can be made of ordinary conventional steel. The top plate 7 is arranged above the bottom plate 8 and is connected by a connecting member 9, which can be a screw. A cavity is arranged between the top plate 7 and the bottom plate 8. The pressure detection and visualization mechanism includes a strain gauge sensor 10, a visualization module 12, and an acquisition and transmission cable 11. The strain gauge sensor 10 is arranged in the cavity, the visualization module 12 is arranged on the top plate 7, and is used to display the pressure value. The acquisition and transmission cable 11 is configured to electrically connect the strain gauge sensor 10 and the visualization module 12. The visualization module 12 is installed above the device top cover 6. Specifically, as shown in Figure 5 and Figure 6As shown, the strain gauge sensor 10 is a sensor that works on the principle of resistance strain effect, which can convert the strain change on the mechanical member into resistance change, thereby realizing the measurement of physical quantities such as force, pressure, torque, etc. The visualization module 12 belongs to a packaging assembly, which is composed of a battery, a circuit board, a display screen, etc. After the strain gauge sensor 10 is loaded, it will be deformed, and its resistance value will change accordingly. The circuit board will calculate the pressure value according to the degree of current change and display it on the display screen. The strain gauge sensor 10, the collection and transmission cable 11, the circuit board, the display screen, etc. used can be modified from general products. In addition, other pressure conversion methods can also obtain pressure value information, such as indirect reading through spring compression amount and rubber isolator 13 compression amount.

[0050] In some embodiments, the locomotive diesel generator set rubber isolator visualized creep pre-release device further comprises a limiting mechanism arranged on the base 1 and distributed along the circumference of the rubber isolator 13, for limiting the horizontal position of the rubber isolator 13, ensuring that the rubber isolator 13 does not move or deviate excessively in the horizontal direction during the working process, and ensuring the accuracy of the detection results.

[0051] In some embodiments, as shown in Figure 1 The upper part of the base 1 is a plane, and the rubber isolator 13 is arranged at the center of the base 1. A plurality of first sliding groove groups are uniformly distributed around the center of the base 1 on the base 1. The limiting mechanism includes a plurality of limiting plates 2 and a fixing assembly. Each limiting plate 2 is arranged above the first sliding groove group, and a second sliding groove group opposite to the first sliding groove group is arranged on each limiting plate 2. The fixing assembly penetrates the first sliding groove group and the second sliding groove group. The limiting plate 2 can be adjusted to the distance from the center of the base 1 under the limitation of the first sliding groove group and the second sliding groove group, so as to adapt to rubber isolators 13 of different sizes. Specifically, when adjusting the position of the limiting plate 2, each limiting plate 2 needs to be adjusted to be in contact with the rubber isolator 13. The fixing assembly is configured to fix the limiting plate 2 and the base 1 after the position of the limiting plate 2 is determined, so that the limiting plate 2 can play a limiting role.

[0052] In some embodiments, with the center of the base 1 as the reference circle, the first sliding groove group includes two parallel first sliding grooves 14, and the second sliding groove group includes two parallel second sliding grooves 15. The extension direction of each first sliding groove 14 and each second sliding groove 15 is parallel to the radial line of the reference circle. Through the setting mode of the first sliding groove 14 and the second sliding groove 15, the adjustable distance and the adjustable direction of the limiting plate 2 can be limited.

[0053] In some embodiments, the fixing assembly comprises a locking bolt 3 and a locking nut 4. The locking bolt 3 penetrates the first sliding groove 14 and the second sliding groove 15 from bottom to top in sequence, and the locking nut 4 is threadedly connected with the locking bolt 3. After the position of the limiting plate 2 is determined, the locking nut 4 is tightened, and when the position of the limiting plate 2 needs to be adjusted, the locking nut 4 is loosened. The locking bolt 3 and the locking nut 4 are both national standard parts, which are simple in cost and convenient to operate. In addition, the bolt screwing thimble structure or the method of directly fixing the bottom plate 8 of the rubber vibration isolator 13 to the base 1 by bolts can also achieve the limiting of the rubber vibration isolator 13.

[0054] In some embodiments, the upper surface of the base 1 is square, and the corners are chamfered. There are four threaded holes 17 distributed at the four corners of the base 1, and there are four first sliding groove groups, each of which is between two adjacent round holes 16. The overall structure is compact and uniform, which can effectively limit the rubber vibration isolator 13.

[0055] In some embodiments, the upper and lower surfaces of the bottom plate 8 of the top cover 6 are square, and the corners are chamfered. The outer contour of the top plate 7 of the top cover 6 is aligned with the outer contour of the bottom plate 8, and there are four round holes 16 distributed at the four corners of the top cover 6. Correspondingly, there are four pre-tightening bolts 5 uniformly distributed around the rubber vibration isolator 13. There are four strain gauge sensors 10, which are respectively arranged at the four corners of the top cover 6. The four strain gauge sensors 10 are connected in series by the collection transmission cable 11 and then connected to the interface of the visualization module 12 through the connection interface. In addition, the number and position of the strain gauge sensors 10 can also be adjusted as needed.

[0056] In some embodiments, the force applying mechanism can also comprise a combination of one or more of hydraulic drive mechanism, pneumatic device, gear and rack device.

[0057] The second aspect of the present application provides a method for visualizing the creep pre-release of a rubber vibration isolator of a locomotive diesel generator set, which is implemented based on the rubber vibration isolator visualizing creep pre-release device of any of the above embodiments, and comprises the following steps:

[0058] S1, placing the rubber vibration isolator 13 on the upper part of the base 1;

[0059] S2, applying a downward force to the rubber vibration isolator 13 by the force applying mechanism;

[0060] S3, when the pressure detection and visualization mechanism detects that the pressure value applied by the force applying mechanism reaches the preset pressure value, the pressure detection and visualization mechanism starts to stand still, and the pressure value is monitored in real time during the standing still process;

[0061] S4, when the pressure detection and visualization mechanism detects that the pressure value decreases, the action height of the rubber isolator 13 is adjusted to maintain the pressure value at a preset size;

[0062] S5, after standing, the compression degree of the rubber isolator 13 is obtained.

[0063] Further, the working principle and detailed operation method of the locomotive diesel generator set rubber isolator visual creep pre-release device are:

[0064] (1) Place the rubber isolator 13 at the center position of the base 1 (as shown in Figure 7 ).

[0065] (2) Adjust the position of each limiting plate 2 so that it is attached to the bottom plate 8 of the rubber isolator 13, and then tighten the locking nut (as shown in Figure 8 ).

[0066] (3) Set the top cover 6 above the rubber isolator 13, and install the visualization module 12 on the top cover 6, and connect the strain gauge sensor 10 and the visualization module 12 together with the acquisition transmission cable 11 (as shown in Figure 9 ).

[0067] (4) Screw in four pre-tightening bolts 5; specifically, first insert the pre-tightening bolts 5 from the round holes 16 at the four corners of the top cover 6, and then manually screw the pre-tightening bolts 5 into the threaded holes 17 at the four corners of the base 1 (as shown in Figure 10 ).

[0068] (5) Calculate the torque value required for a single pre-tightening bolt 5 (corresponding to the load bearing condition when the rubber isolator 13 is actually applied). Specifically, calculate the tightening torque required for a single pre-tightening bolt 5 according to formula (1).

[0069] M= (K x D x F) / N formula (1)

[0070] Where: M is the tightening torque required for a single pre-tightening bolt 5, unit Nm;

[0071] K is the thread tightening coefficient, according to engineering experience, in this embodiment it can be taken as 0.15;

[0072] D is the nominal diameter of the pre-tightening bolt 5, unit m, in this embodiment it is 0.2;

[0073] F is the pre-tightening force required for the pre-tightening bolt 5, which can be converted from the pressure required by the isolator, unit N, in this embodiment it is 5833N;

[0074] N is the number of pre-tightening bolts 5, in this embodiment it is 4, so the tightening torque of a single pre-tightening bolt 5 is calculated to be 175 Nm.

[0075] (6) As shown in the diagonal alternating order, uniformly fasten 4 pre-tightening bolts 5 to the fastening torque of 175 Nm. Figure 11

[0076] (7) When the pressure value on the display is 5833 N, stop tightening the pre-tightening bolts 5, check the sinking scale of each pre-tightening bolt 5, and if there is a difference in the sinking scale of each pre-tightening bolt 5, adjust the rotation depth of one or more pre-tightening bolts 5 to make the rubber vibration isolator 13 evenly bear on the four corners under the specified pressure value.

[0077] (8) Start to stand still and monitor the pressure value change during the standing process, if it decreases, tighten the pre-tightening bolts 5 in time; after the standing is completed, read the average sinking scale of the four pre-tightening bolts 5 corresponding to the four corners of the rubber vibration isolator 13, which is the adjusted gasket thickness value when the rubber vibration isolator 13 is formally installed under the diesel generator set.

[0078] The technical features of the above embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the description.

[0079] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, some modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.​

Claims

1. A method of visualizing creep pre-release of a locomotive diesel generator set rubber isolator, comprising: The application discloses a visual creep pre-release device for a locomotive diesel generator set rubber vibration isolator. A base (1) is arranged on the upper part of the base (1) for placing a rubber vibration isolator (13); A force applying mechanism is arranged on the base (1) and configured to apply a downward force to the rubber vibration isolator (13) and the applied force is adjustable; A pressure detecting and visualizing mechanism is arranged on the force applying mechanism and configured to detect the pressure applied by the force applying mechanism in real time and display the pressure value. The circumferential edge of the base (1) is uniformly provided with a plurality of threaded holes (17); the force applying mechanism comprises a top cover (6) and a force applying member; the top cover (6) is detachably arranged above the rubber vibration isolator (13) and the circumferential edge of the top cover (6) is provided with a plurality of circular holes (16) arranged opposite to the plurality of threaded holes (17); the force applying member comprises a plurality of pre-tightening bolts (5), each of which is inserted into the circular hole (16) and the lower end of which is threadedly connected with the threaded hole (17); The top cover (6) comprises a bottom plate (8) and a top plate (7); the top plate (7) is arranged on the bottom plate (8) and connected through a connecting member (9); a cavity is arranged between the top plate (7) and the bottom plate (8); the pressure detecting and visualizing mechanism comprises a strain gauge sensor (10), a visualizing module (12) and an acquisition and transmission cable (11); the strain gauge sensor (10) is arranged in the cavity, the visualizing module (12) is arranged on the top plate (7) and configured to display the pressure value; the acquisition and transmission cable (11) is configured to electrically connect the strain gauge sensor (10) and the visualizing module (12). The method comprises the following steps: S1, placing the rubber vibration isolator (13) on the upper part of the base (1); S2, applying a downward force to the rubber vibration isolator (13) by using the force applying mechanism; S3, when the pressure detecting and visualizing mechanism detects that the pressure value applied by the force applying mechanism reaches a preset pressure value, starting to stand still and monitoring the pressure value change in real time during the standing still process; S4, when the pressure detecting and visualizing mechanism detects that the pressure value decreases, adjusting the acting height of the rubber vibration isolator (13) to maintain the pressure value at the preset size; S5, obtaining the compression degree of the rubber vibration isolator (13) after the standing still is completed.

2. The method of visualizing creep pre-release of a locomotive diesel generator set rubber isolator of claim 1, wherein, A scale is arranged on each pre-tightening bolt (5) and the scale is used to indicate the sinking depth of the pre-tightening bolt (5).

3. The locomotive diesel generating set rubber isolator visualize creep pre- release method of claim 1, wherein, A limiting mechanism is arranged on the base (1) and distributed along the circumference of the rubber vibration isolator (13) and used to limit the horizontal position of the rubber vibration isolator (13).

4. The method of visualizing creep pre-release of a locomotive diesel generator set rubber isolator of claim 3, wherein, The upper part of the base (1) is a plane, the rubber vibration isolator (13) is arranged at the center of the base (1); a plurality of first sliding groove groups are uniformly distributed around the center of the base (1) on the base (1), the limiting mechanism comprises a plurality of limiting plates (2) and a fixing assembly, each limiting plate (2) is arranged above a first sliding groove group, a second sliding groove group opposite to the first sliding groove group is arranged on each limiting plate (2), the fixing assembly penetrates the first sliding groove group and the second sliding groove group, the limiting plate (2) can be adjusted to the distance from the center of the base (1) under the limitation of the first sliding groove group and the second sliding groove group; the fixing assembly is configured to fix the limiting plate (2) and the base (1) after the position of the limiting plate (2) is determined.

5. The method of visualizing creep pre-release of a locomotive diesel generator set rubber isolator of claim 4, wherein, A reference circle is made with the center of the base (1) as the center, the first sliding groove group comprises two parallel first sliding grooves (14), the second sliding groove group comprises two parallel second sliding grooves (15), the extension direction of each first sliding groove (14) and each second sliding groove (15) is parallel to the radius of the reference circle.

6. The method of visualizing creep pre-release of a locomotive diesel generator set rubber isolator of claim 4, wherein, The fixing assembly comprises a locking bolt (3) and a locking nut (4); the locking bolt (3) penetrates the first sliding groove (14) and the second sliding groove (15) from bottom to top in sequence, and the locking nut (4) is threadedly connected with the locking bolt (3).

7. The method of visualizing creep pre-release of a locomotive diesel generator set rubber isolator of claim 4, wherein, The upper surface of the base (1) is a square, and the corners are chamfered; the threaded holes (17) are four, distributed at the four corners of the base (1), and the first sliding groove groups are four, each first sliding groove group is between two adjacent circular holes (16).

8. The method of visualizing creep pre-release of a locomotive diesel generator set rubber isolator of claim 7, wherein, The upper and lower surfaces of the bottom plate (8) of the top cover (6) are squares, and the corners are chamfered; the outer contour of the top plate (7) of the top cover (6) is aligned with the outer contour of the bottom plate (8), the circular holes (16) are four, distributed at the four corners of the top cover (6); the strain gauge sensors (10) are four, and the four strain gauge sensors (10) are respectively arranged at the four corners of the top cover (6), and the acquisition transmission cable (11) is connected with the interface of the visualization module (12) through the connection interface after being connected in series with the four strain gauge sensors (10).

9. The locomotive diesel generating set rubber isolator visualize creep pre- release method of claim 1, wherein, The force applying mechanism comprises one or more combinations of hydraulic drive mechanism, pneumatic device, gear and rack device.

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