Two-shaft pre-tightening clamp device capable of being automatically adjusted to achieve synchronous feeding of bolts

Abstract

The utility model provides a two-shaft pre-tightening clamp device capable of being automatically adjusted to achieve synchronous feeding of bolts, and relates to the technical field of engine assembly. A first output shaft is in contact with a first part, and a second output shaft is in contact with a second part; if the force fed back to the first input shaft by the first part is equal to the force fed back to the second input shaft by the second part, the two parts are suspended at the same time; when the force fed back to the first input shaft by the first part is larger than or smaller than the force fed back to the second input shaft by the second part, one part is in a state that the screwing-in speed is reduced or stopped, so that the force fed back to the first input shaft by the first part is equal to the force fed back to the second input shaft by the second part; in this way, when the force fed back to the first input shaft by the first part and the force fed back to the second input shaft by the second part are unbalanced, suspension of the parts is stopped or slowed down.

Description

Technical Field

[0001] The utility model relates to the technical field of engine assembly, in particular to a two-axis pre-tightening clamp device which can automatically adjust to synchronous feeding of bolts. Background Art

[0002] The pre-tightening fixture in the prior art includes a housing, an input shaft, a driving wheel, an output shaft, a driven wheel, and an adjustable torque limiter. After the high-pressure pump is fully fitted, the two high-pressure pump bolts are fully tightened. The driving tool used in the current fixture drives a driving wheel in a reverse manner, and then the driving wheel drives the two driven wheels to tighten. Due to the manual pre-tightening, the number of pre-tightening turns of the bolts at both ends will be different. After the high-pressure pump is fitted with the base, the adjustable torque limiter on one side of the bolt has been fully tightened. It is affected by the reaction force of the bolt feedback. When the feedback force is greater than the upper limit of the force value set by the limiter, the limiter slips, and the side that is not fully tightened continues to tighten until both sides are fully tightened. However, during the screwing process, the two bolts cannot be adjusted at any time to be suspended at the same time. Utility Model Content

[0003] The purpose of the utility model is to provide a two-axis, automatically adjustable pre-tightening fixture device for synchronous bolt feeding, so as to solve the technical problem that the high-pressure pump bolts cannot be adjusted to hang in at any time in the prior art. The preferred technical solutions among the many technical solutions provided by the utility model can produce many technical effects as described below.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The utility model provides a two-axis pre-tightening fixture device that can automatically adjust to synchronous feeding of bolts, including a housing, an input shaft, a first output shaft, a second output shaft, and a differential assembly. The first end of the input shaft extends out of the housing, and the second end is engaged with the differential assembly to drive the differential assembly to rotate. The output shafts at both ends of the differential assembly are arranged in the housing through a connecting shaft so that the connecting shaft rotates with the rotation of the differential assembly. A first bevel gear assembly is arranged between the first output shaft and one of the connecting shafts, and a second bevel gear assembly is arranged between the second output shaft and the other connecting shaft. The second ends of the first output shaft and the second output shaft extend out of the housing to contact with parts.

[0006] Preferably, the differential assembly includes a differential case and a planetary gear train, the planetary gear train is arranged in the differential case, the input shaft is inserted into the differential case and meshes with the input end of the planetary gear train, output ends are arranged on both sides of the differential case, and the driven shaft of the planetary gear train extends out of the differential case and is connected to the connecting shaft.

[0007] Preferably, the first bevel gear assembly includes a first bevel gear and a second bevel gear, the first bevel gear is mounted on the connecting shaft, the second bevel gear is mounted on the first output shaft, and the axis of the first bevel gear is perpendicular to the axis of the second bevel gear; the second bevel gear assembly includes a third bevel gear and a fourth bevel gear, the third bevel gear is mounted on the connecting shaft, the fourth bevel gear is mounted on the second output shaft, and the axis of the third bevel gear is perpendicular to the axis of the fourth bevel gear.

[0008] Preferably, a first bearing is provided between the connecting shaft and the housing.

[0009] Preferably, a second mounting boss is provided on the inner side of the shell, the second mounting boss is provided with a second mounting hole, a second bearing is installed in the second mounting hole, and an inner ring of the second bearing is connected to the first output shaft or the second output shaft to support the first output shaft or the second output shaft.

[0010] Preferably, a third mounting hole is provided on the housing, the axis of the third mounting hole is aligned with the axis of the second mounting hole, a third bearing is provided in the third mounting hole, and the third bearing is used for mounting the first output shaft or the second output shaft.

[0011] The technical solution provided by this application document includes the following beneficial effects:

[0012] The utility model provides a two-axis pre-tightening fixture device which can be automatically adjusted to synchronous feeding of bolts. When a pair of parts are suspended, the two parts are subjected to the same force, that is, the first output shaft contacts the first part, and the second output shaft contacts the second part, wherein the force fed back by the first part to the first input shaft is equal to the force fed back by the second part to the second input shaft, and the two parts are suspended at the same time; when the force fed back by the first part to the first input shaft is less than the force fed back by the second part to the second input shaft, the second part will present a state of decreasing or stopping the screwing-in speed, and the first part will maintain the screwing-in speed so that the force fed back by the first part to the first input shaft is equal to the force fed back by the second part to the second input shaft; when the force fed back by the first part to the first input shaft is greater than the force fed back by the second part to the second input shaft, the first part will present a state of decreasing or stopping the screwing-in speed, and the second part will maintain the screwing-in speed so that the force fed back by the first part to the first input shaft is equal to the force fed back by the second part to the second input shaft, thereby making the first part and the second part synchronously screwed into the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 is a schematic diagram showing the internal structure of a two-axis pre-tightening fixture device that is automatically adjusted to synchronous feeding of bolts according to an exemplary embodiment;

[0015] Figure 2 is a cross-sectional view showing a two-axis, automatically adjusted to synchronous bolt feeding pre-tightening fixture device according to an exemplary embodiment;

[0016] Figure 3 is a schematic diagram showing a two-axis pre-tightening fixture device that is automatically adjusted to synchronous feeding of bolts according to an exemplary embodiment.

[0017] In the figure: 1, housing; 2, input shaft; 3, first output shaft; 4, second output shaft; 5, differential assembly; 51, differential case; 52, planetary gear train; 6, first bevel gear set; 7, second bevel gear set; 8, first bearing; 9, second bearing; 10, third bearing; 11, connecting shaft. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0019] This specific embodiment provides a two-axis pre-tightening fixture device that can automatically adjust to synchronous feeding of bolts, so as to solve the technical problem in the prior art that the high-pressure pump bolts cannot be adjusted to be suspended at any time.

[0020] The following is an explanation of the embodiments with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the contents of the utility model described in the claims. In addition, the entire contents of the structures represented by the following embodiments are not limited to the solutions required as the utility model described in the claims.

[0021] Reference Figure 1-Figure 3The utility model provides a two-axis pre-tightening fixture device that can automatically adjust to synchronous feeding of bolts, including a housing 1, an input shaft 2, a first output shaft 3, a second output shaft 4, and a differential assembly 5, wherein the first end of the input shaft 2 extends out of the housing 1, and the second end is engaged with the differential assembly 5 to drive the differential assembly 5 to rotate, thereby providing power for the differential assembly 5. The output shafts at both ends of the differential assembly 5 are arranged in the housing 1 through a connecting shaft 11, thereby supporting the differential assembly 5. Since the connecting shaft 11 is connected to the output shaft of the differential assembly 5, the connecting shaft 11 can rotate with the rotation of the differential assembly 5. That is, two connecting shafts 11 are provided, respectively arranged on both sides of the differential assembly 5, wherein a first bevel gear set 6 is provided between the first output shaft 3 and one of the connecting shafts 11, and a second bevel gear set 7 is provided between the second output shaft 4 and the other connecting shaft 11. The first bevel gear set 6 and the second bevel gear set 7 change the rotation direction of the rotating shaft so that the rotation direction of the first output shaft 3 and the second output shaft 4 are the same, and then the first output shaft 3 and the second output shaft 4 can drive the two parts to rotate at the same time, wherein the second ends of the first output shaft 3 and the second output shaft 4 extend out of the housing 1 for contacting the parts.

[0022] When a pair of parts are suspended, the two parts are subjected to the same force, that is, the first output shaft 3 is in contact with the first part, and the second output shaft 4 is in contact with the second part. The force fed back by the first part to the first input shaft 2 is equal to the force fed back by the second part to the second input shaft 2, and the two parts are suspended at the same time; when the force fed back by the first part to the first input shaft 2 is less than the force fed back by the second part to the second input shaft 2, the second part will present a state of decreasing or stopping the screwing speed, and the first part will maintain the screwing speed, so that the force fed back by the first part to the first input shaft 2 is equal to the force fed back by the second part to the second input shaft 2. equal; when the force fed back by the first part to the first input shaft 2 is greater than the force fed back by the second part to the second input shaft 2, the first part will show a state of decreasing or stopping the screwing speed, and the second part will maintain the screwing speed, so that the force fed back by the first part to the first input shaft 2 is equal to the force fed back by the second part to the second input shaft 2, so that the first part and the second part are screwed into the equipment synchronously. With this arrangement, when the force fed back by the first part to the first input shaft is unbalanced with the force fed back by the second part to the second input shaft, one of the parts stops or slows down the hanging, so as to ensure that the two parts can be hung in the mounting hole of the equipment synchronously.

[0023] In this embodiment, the differential assembly 5 includes a differential case 51 and a planetary gear train 52. The planetary gear train 52 is arranged in the differential case 51. The input shaft 2 is inserted into the differential case 51 and meshes with the input end of the planetary gear train 52. The driven shaft of the planetary gear train 52 extends out of the differential case 51 to form an output end for connecting with the connecting shaft 11, thereby facilitating the differential assembly 5 to drive the connecting shaft 11 to rotate.

[0024] In this embodiment, the first bevel gear set 6 includes a first bevel gear and a second bevel gear. The first bevel gear is installed on one of the connecting shafts 11, and the second bevel gear is installed on the first output shaft 3, so that the connecting shaft 11 can drive the first output shaft 3 to rotate. The axis of the first bevel gear is perpendicular to the axis of the second bevel gear, so that the rotation directions of the first output shaft 3 and the connecting shaft 11 are different; the second bevel gear set 7 includes a third bevel gear and a fourth bevel gear. The third bevel gear is installed on another connecting shaft 11, and the fourth bevel gear is installed on the second output shaft 4, so that the connecting shaft 11 can drive the second output shaft 4 to rotate. The axis of the third bevel gear is perpendicular to the axis of the fourth bevel gear, so that the rotation directions of the first output shaft 3 and the connecting shaft 11 are different.

[0025] In this embodiment, in order to facilitate the rotation of the connecting shaft 11 , a first bearing 8 is provided between the connecting shaft 11 and the housing 1 , thereby reducing the friction between the connecting shaft 11 and the housing 1 .

[0026] In this embodiment, in order to facilitate the installation of the first output shaft 3 and the second output shaft 4 and prevent the first output shaft 3 and the second output shaft 4 from being separated from the housing 1, a second mounting boss is provided on the inner side of the housing 1, and the second mounting boss is provided with a second mounting hole. The second bearing 9 is installed in the second mounting hole, and the inner ring of the second bearing 9 is connected to the first output shaft 3 or the second output shaft 4 to support the first output shaft 3 or the second output shaft 4.

[0027] In this embodiment, in order to facilitate the support of the first output shaft 3 and the second output shaft 4, a third mounting hole is provided on the housing 1, and the axis of the third mounting hole is aligned with the axis of the second mounting hole, so as to facilitate the installation of the first output shaft 3 or the second output shaft 4 in the second mounting hole and the third mounting hole. A third bearing 10 is provided in the third mounting hole, and the third bearing 10 is provided for the installation of the first output shaft 3 or the second output shaft 4 to prevent the first output shaft 3 and the second output shaft 4 from shaking during use.

[0028] It should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. used herein to indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] In the description of this article, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0030] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

[0031] It is to be understood that the same or similar parts in the above embodiments can refer to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments. The multiple schemes provided in this application include their own basic schemes, which are independent of each other and do not restrict each other, but they can also be combined with each other without conflict to achieve multiple effects together.

[0032] Although the embodiments of the present application have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present application. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A two-axis, automatically adjustable pre-tightening fixture for synchronous bolt feeding, characterized in that: The invention comprises a housing (1), an input shaft (2), a first output shaft (3), a second output shaft (4), and a differential assembly (5); the first end of the input shaft (2) protrudes from the housing (1), and the second end is meshed with the differential assembly (5) to drive the differential assembly (5) to rotate; the output shafts at both ends of the differential assembly (5) are mounted in the housing (1) via a connecting shaft (11), so that the connecting shaft (11) rotates along with the rotation of the differential assembly (5); a first bevel gear set (6) is provided between the first output shaft (3) and one of the connecting shafts (11), and a second bevel gear set (7) is provided between the second output shaft (4) and the other connecting shaft (11); the second ends of the first output shaft (3) and the second output shaft (4) protrude from the housing (1) to contact with parts.

2. The two-axis, automatically adjustable pre-tightening fixture device for synchronous bolt feeding according to claim 1 is characterized in that: The differential assembly (5) comprises a differential case (51) and a planetary gear train (52); the planetary gear train (52) is arranged in the differential case (51); the input shaft (2) is inserted into the differential case (51) and meshes with the input end of the planetary gear train (52); output ends are arranged on both sides of the differential case (51); and a driven shaft of the planetary gear train (52) extends out of the differential case (51) and is connected to the connecting shaft (11).

3. The two-axis, automatically adjustable pre-tightening fixture device for synchronous bolt feeding according to claim 1 is characterized in that: The first bevel gear set (6) comprises a first bevel gear and a second bevel gear, the first bevel gear is mounted on the connecting shaft (11), the second bevel gear is mounted on the first output shaft (3), and the axis of the first bevel gear is perpendicular to the axis of the second bevel gear; the second bevel gear set (7) comprises a third bevel gear and a fourth bevel gear, the third bevel gear is mounted on the connecting shaft (11), the fourth bevel gear is mounted on the second output shaft (4), and the axis of the third bevel gear is perpendicular to the axis of the fourth bevel gear.

4. The two-axis, automatically adjustable pre-tightening fixture device for synchronous bolt feeding according to claim 1, characterized in that: A first bearing (8) is provided between the connecting shaft (11) and the housing (1).

5. The two-axis, automatically adjustable pre-tightening fixture device for synchronous bolt feeding according to claim 1, characterized in that: A second mounting boss is provided on the inner side of the housing (1), the second mounting boss is provided with a second mounting hole, a second bearing (9) is mounted in the second mounting hole, and an inner ring of the second bearing (9) is connected to the first output shaft (3) or the second output shaft (4) to support the first output shaft (3) or the second output shaft (4).

6. The two-axis, automatically adjustable pre-tightening fixture device for synchronous bolt feeding according to claim 5, characterized in that: The housing (1) is provided with a third mounting hole, the axis of the third mounting hole being aligned with the axis of the second mounting hole, and a third bearing (10) being provided in the third mounting hole, the third bearing (10) being provided for mounting the first output shaft (3) or the second output shaft (4).

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