CN219487167U

CN219487167U - Battery locking and unlocking mechanism of new energy heavy truck battery replacement station

Info

Publication number: CN219487167U
Application number: CN202320759809.7U
Authority: CN
Inventors: 吴如伟; 黄超; 刘细波; 万琳; 王欣欣
Original assignee: Anhui Lvzhou New Energy Intelligent Equipment Co ltd
Current assignee: Anhui Lvzhou New Energy Intelligent Equipment Co ltd
Priority date: 2023-04-09
Filing date: 2023-04-09
Publication date: 2023-08-08
Anticipated expiration: 2033-04-09

Abstract

The utility model provides a new energy heavy-duty truck power station battery locking and unlocking mechanism which comprises a vehicle upper lock body and a battery upper lock body, wherein the battery upper lock body comprises a mounting seat, a lock shaft, steel balls, a T-shaped screw rod pin, a spline, a spring, a first hexagonal lock catch and a second hexagonal lock catch, the lock shaft is arranged in the mounting seat, one end of the lock shaft extends out of one side of the mounting seat, the steel balls are arranged on the front end part of the lock shaft, the T-shaped screw rod pin is arranged in the lock shaft, the spline is arranged at the back of the T-shaped screw rod pin, the T-shaped screw rod pin is fixedly connected with the spline, the first hexagonal lock catch is sleeved on the spline, the second lock catch is arranged on the other side of the hexagonal lock catch in a clamping manner, and the vehicle upper lock body comprises a tensioning sleeve for placing the steel balls. The utility model adopts the expansion bead locking instead of the thread direct locking, increases the tension force, reduces the abrasion at the same time, and can improve the tolerance range by adding a larger gap between the lock shaft and the expansion sleeve.

Description

Battery locking and unlocking mechanism of new energy heavy truck battery replacement station

Technical Field

The utility model relates to the technical field of power exchange stations, in particular to a battery locking and unlocking mechanism of a new energy heavy-duty truck power exchange station.

Background

The automatic power change of the new energy vehicle is used as one of the high-efficiency ways of supplementing electric energy for the new energy vehicle, and the efficiency is far faster than that of the charging way of the charging pile which is currently mainstream. In the construction of new energy power exchange stations, a very important ring is a battery locking and unlocking device. How to realize the quick replacement of the battery, especially the truck is difficult to realize automatic replacement due to the large battery specification and the heavy weight, and the success and failure of the battery locking and unlocking directly lead to the success and failure of the battery replacement station.

At present, a battery lock used for a heavy truck is a thread lock generally, the thread lock is unlocked through a locking and unlocking gun, but the locking and unlocking gun can generate larger abrasion to a lock head when the locking and unlocking gun is locked and unlocked due to the deformation of a vehicle girder and the different positions of the vehicle, meanwhile, the thread lock is repeatedly screwed down, the abrasion is larger after the unlocking is performed, the tolerance range of the thread lock is smaller, and the failure rate of locking and unlocking is larger due to the larger number of the thread locks.

Disclosure of Invention

The utility model aims to provide a new energy heavy truck power exchange station battery locking and unlocking mechanism which overcomes the problems or at least partially solves the problems.

In order to achieve the above purpose, the technical scheme of the utility model is specifically realized as follows:

the utility model provides a new energy heavy-duty truck power station battery locking and unlocking mechanism which comprises a truck upper lock body and a battery upper lock body, wherein the truck upper lock body is arranged on a truck of a truck, the battery upper lock body is arranged on a battery of the truck, the battery upper lock body comprises a mounting seat, a lock shaft, steel balls, a T-shaped screw rod pin, a spline, a spring, a first hexagonal lock catch and a second lock catch, the lock shaft is arranged in the mounting seat, one end of the lock shaft extends out from one side of the mounting seat, the steel balls are arranged at the front end of the lock shaft, a T-shaped screw rod pin is arranged in the lock shaft, a spline is arranged at the back of the T-shaped screw rod pin, the T-shaped screw rod pin is fixedly connected with the spline, the first hexagonal lock catch is sleeved on the spline, and the second lock catch is arranged on the other side of the hexagonal lock catch in a clamping manner.

The upper lock body of the bicycle comprises a tensioning sleeve for placing steel balls.

As a further scheme of the utility model, the lock body on the vehicle further comprises a tension sleeve fixing seat and a base, wherein the tension sleeve is fixedly connected inside the tension sleeve fixing seat and fixedly connected to the front side of the base, and the tension sleeve is arranged between the tension sleeve fixing seat and the base.

As a further scheme of the utility model, an annular locking groove for limiting the steel balls is formed in the tensioning sleeve.

As a further scheme of the utility model, the front part of the lock shaft is provided with a plurality of hole grooves in an annular array, the steel balls are arranged in the hole grooves in a matching way, and the steel balls are in one-to-one correspondence with the hole grooves.

As a further scheme of the utility model, the T-shaped screw rod pin is arranged in the lock shaft, and the T-shaped screw rod pin is in meshed connection with the lock shaft through the raceway groove.

As a further scheme of the utility model, key teeth are arranged on the peripheral surface of the spline, and a key slot matched with the key teeth is arranged in the hexagonal lock catch.

As a further scheme of the utility model, the tail part of the lock shaft is fixedly connected with the mounting seat through a bolt, a spring is arranged in the lock shaft, and the spring is sleeved on the T-shaped screw rod pin.

As a further scheme of the utility model, the front part of the T-shaped screw rod pin is conical, and the front part of the T-shaped screw rod pin is contacted with the steel balls.

The utility model provides a new energy heavy truck battery charging and unlocking mechanism, which has the beneficial effects that:

the tension is increased by adopting the expansion bead locking instead of the direct locking of the screw thread, the abrasion is reduced at the same time, and the tolerance range can be improved by adding a larger gap between the lock shaft and the expansion sleeve.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of an explosive structure according to the present utility model.

Fig. 2 is a schematic structural view of the present utility model.

Fig. 3 is a schematic view of an explosion structure of a lock body of a vehicle according to the present utility model.

Fig. 4 is a schematic view of an exploded structure of a battery lock according to the present utility model.

Fig. 5 is a schematic view of the structure of the T-shaped screw pin of the present utility model.

Fig. 6 is a schematic structural view of a first hexagonal lock catch in the present utility model.

Fig. 7 is a schematic structural diagram of a second latch according to the present utility model.

In the figure: 1. a lock body on the vehicle; 2. a battery locking body; 11. a tensioning sleeve fixing seat; 12. a tensioning sleeve; 13. a base; 21. a mounting base; 22. a lock shaft; 23. steel balls; 24. a T-shaped screw pin; 25. a spline; 26. a spring; 27. a hexagonal lock catch I; 28. and a second lock catch.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

Referring to fig. 1-7, the battery locking and unlocking mechanism of the new energy heavy truck power exchange station provided by the embodiment of the utility model comprises a vehicle upper lock body 1 and a battery upper lock body 2, wherein the vehicle upper lock body 1 is arranged on a girder of a power exchange vehicle, the battery upper lock body 2 is arranged on the battery of the power exchange vehicle, the battery upper lock body 2 comprises a mounting seat 21, a lock shaft 22, steel balls 23, a T-shaped screw pin 24, a spline 25, a spring 26, a first hexagonal lock 27 and a second lock 28, the lock shaft 22 is arranged in the mounting seat 21, one end of the lock shaft 22 extends from one side of the mounting seat 21, the steel balls 23 are arranged on the front end of the lock shaft 22, the T-shaped screw pin 24 is arranged in the lock shaft 22, the back of the T-shaped screw pin 24 is provided with the spline 25, the T-shaped screw pin 24 is fixedly connected with the spline 25, the first hexagonal lock 27 is sleeved on the spline 25, and the second lock 28 is arranged on the other side of the hexagonal lock 27.

The lock body 1 of the bicycle comprises a tensioning sleeve 12 for placing a steel ball 23.

In the using process of the utility model, the battery lock body 2 is arranged on a battery of a vehicle for replacing, the battery lock body 2 and the battery structure are integrated, the vehicle lock body 1 is arranged on a girder of the vehicle for replacing, and the vehicle lock body 1 and the girder of the vehicle for replacing are integrated.

Unlocking: in this case, the battery lock 2 of the new energy battery-changing vehicle is clamped and combined with the vehicle lock 1 through the steel balls 23, the locking gun pushes the second lock 28 forward and rotates the second lock 28, the second lock 28 moves forward and contacts with the first hexagonal lock 27, so that the first hexagonal lock 27 is clamped with the second lock 28, the spline 25 is inserted into the first hexagonal lock 27, the second lock 28 rotates to drive the spline 25 to reversely rotate, the spline 25 is connected with the T-shaped screw rod pin 24 into a whole, the second lock 28 drives the spline 25 to reversely rotate to enable the T-shaped screw rod pin 24 to rotate along the raceway groove and move backward, at the moment, the spring 26 is released, the steel balls 23 shrink, the battery lock 2 is separated from the vehicle lock 1, the battery is dragged backward, and the battery lock 2 is separated from the vehicle lock 1 to finish unlocking.

Locking: the battery lock body 2 and the vehicle lock body 1 of the new energy battery change vehicle are separated, the locking gun pushes the lock catch two 28 forwards and rotates the lock catch two 28, the lock catch two 28 moves forwards and contacts with the hexagonal lock catch one 27, the hexagonal lock catch one 27 is clamped with the lock catch two 28, the spline 25 is inserted into the hexagonal lock catch one 27, so that the lock catch two 28 rotates to drive the hexagonal lock catch one 27 to rotate, the spline 25 is driven to rotate forwards, the spline 25 is connected with the T-shaped screw rod pin 24 into a whole, the lock catch two 28 drives the spline 25 to rotate forwards, the T-shaped screw rod pin 24 rotates along the raceway groove and moves forwards, the T-shaped screw rod pin 24 moves forwards to compress the spring 26, then the conical part of the front part of the T-shaped screw rod pin 24 contacts with the steel balls 23, the steel balls 23 are extruded from the hole groove of the lock shaft 22, and then a part of the steel balls 23 stretches into the annular lock groove on the expansion sleeve 12, so that the steel balls 23 and the expansion sleeve 12 are driven to rotate, and the battery lock body 2 and the vehicle lock body 1 are clamped and locked.

As shown in fig. 1-3, the lock body 1 further includes a tension sleeve fixing seat 11 and a base 13, the tension sleeve 12 is fixedly connected inside the tension sleeve fixing seat 11, and the tension sleeve 12 is fixedly connected at the front side of the base 13, and the tension sleeve 12 is arranged between the tension sleeve fixing seat 11 and the base 13, so that the tension sleeve 12 is conveniently fixed on a girder of the electric vehicle through the tension sleeve fixing seat 11 and the base 13.

As shown in fig. 3, an annular locking groove for limiting the steel balls 23 is formed in the tensioning sleeve 12, and the steel balls 23 which are convenient to extend out are arranged in the annular locking groove, so that the locking shaft 22 and the tensioning sleeve 12 are locked together through the annular locking groove and the steel balls 23.

As shown in fig. 4, the front part of the lock shaft 22 is provided with a plurality of hole slots in an annular array, the steel balls 23 are arranged in the hole slots in a matching way, the steel balls 23 correspond to the hole slots one by one, the steel balls 23 are conveniently placed, and meanwhile, the steel balls 23 also shrink and extend along the hole slots.

As shown in fig. 4 and 5, the T-shaped screw pin 24 is disposed inside the lock shaft 22, and the T-shaped screw pin 24 is engaged with the lock shaft 22 through a raceway groove, so that the T-shaped screw pin 24 is convenient to move along the raceway groove when rotating.

As shown in fig. 1 and 4, the front part of the T-shaped screw rod pin 24 is tapered, and the front part of the T-shaped screw rod pin 24 contacts with the steel ball 23, so that the steel ball 23 is pushed by the front part of the T-shaped screw rod pin 24 by moving the T-shaped screw rod pin 24 forward and backward, thereby driving the steel ball 23 to extend or retract from the hole slot.

As shown in fig. 5 and 6, the peripheral surface of the spline 25 is provided with a key tooth, and the interior of the hexagonal lock catch 27 is provided with a key slot matched with the key tooth, and the spline is matched and clamped with the key tooth through the key slot, so that the hexagonal lock catch 27 can stably drive the spline 25 to rotate during rotation.

As shown in fig. 1 and 4, the tail of the lock shaft 22 is fixedly connected with the mounting seat 21 through a bolt, a spring 26 is arranged in the lock shaft 22, the spring 26 is sleeved on the T-shaped screw rod pin 24, and the steel ball 23 is limited through the spring 26.

According to the use occasion and the operation requirement, select spline 25, spline 25's advantage has:

because more teeth and grooves are formed directly and symmetrically on the shaft and the hub bore, the spline 25 connection is more evenly stressed.

The key groove is shallow, the stress concentration at the tooth root is small, and the strength of the shaft and the hub is less weakened

The number of teeth is more, the total contact area is larger, thus being capable of bearing larger load

The parts on the shaft have good centering with the shaft (which is important for high-speed and precision machines)

Better guidance (which is important for dynamic connection)

The grinding method can be used for improving the machining precision and the connection quality.

The rectangular spline 25 is convenient to process, is centered by a small diameter, and is easy to ensure the centering precision. Is suitable for static connection or light load connection

The spline 25 connection is therefore suitable for connections with high centering accuracy requirements, high loads or frequent slippage. The number of teeth, size, fit, etc. of the spline 25 connection should be selected according to the standard.

The rectangular spline connection strength checking calculation adopts a general simple algorithm, and the calculation formula is as follows:

static connection (in terms of compression strength):

dynamic connection (compression strength calculation):

wherein:

t-transfer torque, N.mm.

Psi-the uneven coefficient of each interdental load, generally taking psi=0.7-0.8, and taking smaller value when the number of teeth is more;

z-the number of teeth of the spline, obtained by looking up a table;

l-the working length of the tooth;

h is the working height of the key teeth,wherein C is the chamfer size; d is the basic size of the major diameter of the external spline, and D is the basic size of the minor diameter of the internal spline;

d _m the average diameter of the particles is the same as the average diameter of the particles,

[σ _p ]、[p]the allowable extrusion stress and allowable pressure are shown in Table 1.

TABLE 1 allowable stress for spline connection (MPa)

Note that: 1. the use and failure refer to load variation, and include bidirectional impact, high vibration frequency, large amplitude, poor lubrication (opposite movement connection), low material hardness, low precision and the like.

2. In the same case, smaller values of [ σp ] or [ p ] are used for long and important operating times.

3. The tensile strength of the internal and external spline materials is not lower than 590MPa.

According to the application occasion and the application requirement, the trapezoidal screw rod is selected, and the trapezoidal screw rod has the advantages that

The trapezoidal screw adopts milling screw equipment, and the processed product has characteristics such as surface smoothness, vibrations are little. The miniature trapezoidal screw rod has better wear resistance and can be used without lubrication.

1. The wear resistance is good: the trapezoidal screw has a rolling shaft of a standard length, and the shaft has high wear resistance, and when the trapezoidal screw is matched with the trapezoidal screw, a smooth movement effect can be obtained.

2. The mechanical properties can be improved: the trapezoid screw rod has fiber streamline along the tooth surface contour in the rolling shaft tooth surface inner structure, so that the surrounding structure becomes compact, the work is more long, and the fatigue resistance is improved.

3. The shaft end supporting seat can be additionally processed: the support bearing portion can be easily machined by turning or milling.

4. The material is good: the trapezoidal screw adopts high-strength zinc alloy, and has high coking resistance, wear resistance and load resistance.

The national standard prescribes that the code of 30-degree trapezoidal screw thread is expressed by Tr and nominal diameter multiplied by screw pitch, the left-handed screw thread is required to be added with LH after the dimension specification, and the right-handed screw is not required to be injected. Such as Tr36 x 6; tr44×8LH, and the like.

The basic size names, codes and selection formulas are as follows:

tooth angle α=30°

Pitch P is determined by thread standards

Crest clearance acp=1.5 to ac =0.25; p=6 to 12 ac =0.5; p=14 to 44 ac =1

External screw thread: a large diameter d nominal diameter; pitch diameter d2=d-0.5P; minor diameter d1=d-2 h3; tooth height h3=0.5p+ac

Internal screw thread: major diameter d4=d+2ac; pitch diameter d2=d2; minor diameter d1=d-P; tooth height h4=h3; the coping width f=0.366P; width of the socket w=0.366P-0.563 ac

Thread rise angle ψtgψ=p/pi

The imprecise constant-speed transmission occasion can be calculated by using the following formula of T1= (Ta+Tpmax+Tu)

Wherein T1: driving torque at constant speed; ta= (Fa x I)/(2 x 3.14 x n 1); fa: an axial load N; fa=f+μmg; f: n is the axial cutting force of the screw rod; mu: coefficient of friction of the guide surface; m: the weight of the moving object (workbench plus workpiece) is kg; g:9.8; tpmax: the upper limit of the dynamic friction torque of the screw rod is N.cm; tu: the friction torque of the support bearing, etc., is n.cm.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.

Claims

1. The utility model provides a new energy heavy truck trades power station battery and adds release mechanism, includes lock body (1) and battery lock body (2) on the car, and lock body (1) on the car is installed on trading the car girder, battery lock body (2) are installed on trading the car battery, a serial communication port, lock body (2) on the battery include mount pad (21), lock axle (22), steel ball (23), T type screw pin (24), spline (25), spring (26), hexagonal hasp one (27) and hasp two (28), mount pad (21) inside is provided with lock axle (22), and lock axle (22) one end is extended from mount pad (21) one side, be provided with steel ball (23) on lock axle (22) front end, and be provided with T type screw pin (24) inside lock axle (22), T type screw pin (24) back is provided with spline (25), and T type screw pin (24) and spline (25) each other fixed connection, hexagonal hasp one side (25) are equipped with hexagonal hasp one, hexagonal hasp one (27) are connected with hexagonal hasp two (28);

the upper lock body (1) of the bicycle comprises a tensioning sleeve (12) for placing steel balls (23).

2. The new energy heavy truck power station battery locking and unlocking mechanism according to claim 1, wherein the vehicle lock body (1) further comprises a tensioning sleeve fixing seat (11) and a base (13), the tensioning sleeve fixing seat (11) is fixedly connected with a tensioning sleeve (12) inside, the tensioning sleeve (12) is fixedly connected to the front side of the base (13), and the tensioning sleeve (12) is arranged between the tensioning sleeve fixing seat (11) and the base (13).

3. The new energy heavy truck battery locking and unlocking mechanism for the battery replacement station according to claim 2, wherein an annular locking groove for limiting the steel balls (23) is formed in the tensioning sleeve (12).

4. The new energy heavy truck power station battery locking and unlocking mechanism according to claim 1, wherein a plurality of hole grooves are formed in the front portion of the lock shaft (22) in an annular array, the steel balls (23) are arranged in the hole grooves in a matching mode, and the steel balls (23) are in one-to-one correspondence with the hole grooves.

5. The new energy heavy truck battery power station locking and unlocking mechanism according to claim 1, wherein the T-shaped screw pin (24) is arranged inside the lock shaft (22), and the T-shaped screw pin (24) is meshed with the lock shaft (22) through a raceway groove.

6. The new energy heavy truck battery locking and unlocking mechanism according to claim 5, wherein the front part of the T-shaped screw rod pin (24) is conical, and the front part of the T-shaped screw rod pin (24) is in contact with the steel ball (23).

7. The new energy heavy truck power station battery locking and unlocking mechanism according to claim 1, wherein the tail of the lock shaft (22) is fixedly connected with the mounting seat (21) through a bolt, a spring (26) is arranged inside the lock shaft (22), and the spring (26) is sleeved on the T-shaped screw rod pin (24).

8. The new energy heavy truck battery power station locking and unlocking mechanism according to claim 1, wherein key teeth are formed on the peripheral surface of the spline (25), and key grooves matched with the key teeth are formed in the hexagonal lock catch one (27).